Who sits in the 41st chair?

tl;dr Rich-get-richer academic prestige in a scarce job market makes meritocracy impossible. Why some things get popular and others don’t. Also agent-based simulations.

Slightly longer tl;dr This post is about why academia isn’t a meritocracy, at no intentional fault of those in power who try to make it one. None of presented ideas are novel on their own, but I do intend this as a novel conceptual contribution in its connection of disparate threads. Especially, I suggest the predictability of research success in a scarce academic economy as a theoretical framework for exploring successes and failures in the history of science.

But mostly I just beat a “musical chairs” metaphor to death.

Positive Feedback

To the victor go the spoils, and to the spoiled go the victories. Think about it: the Yankees; Alexander the Great; Stanford University. Why do the Yankees have twice as many World Series appearances as their nearest competitors, how was Alex’s empire so fucking vast, and why does Stanford get all the cool grants?

The rich get richer. Enough World Series victories, and the Yankees get the reputation and funding to entice the best players. Ol’ Allie-G inherited an amazing army, was taught by Aristotle, and pretty much every place he conquered increased his military’s numbers. Stanford’s known for amazing tech innovation, so they get the funding, which means they can afford even more innovation, which means even more people think they’re worthy of funding, and so on down the line until Stanford and its neighbors (Google, Apple, etc.) destroy the local real estate market and then accidentally blow up the world.

Alexander's Empire [via]
Alexander’s Empire [via]
Okay, maybe I exaggerated that last bit.

Point is, power begets power. Scientists call this a positive feedback loop: when a thing’s size is exactly what makes it grow larger.

You’ve heard it firsthand when a microphoned singer walks too close to her speaker. First the mic picks up what’s already coming out of the speaker. The mic, doings its job, sends what it hears to an amplifier, sending an even louder version to the very same speaker. The speaker replays a louder version of what it just produced, which is once again received by the microphone, until sound feeds back onto itself enough times to produce the ear-shattering squeal fans of live music have come to dread. This is a positive feedback loop.

Feedback loop. [via]
Feedback loop. [via]
Positive feedback loops are everywhere. They’re why the universe counts logarithmically rather than linearly, or why income inequality is so common in free market economies. Left to their own devices, the rich tend to get richer, since it’s easier to make money when you’ve already got some.

Science and academia are equally susceptible to positive feedback loops. Top scientists, the most well-funded research institutes, and world-famous research all got to where they are, in part, because of something called the Matthew Effect.

Matthew Effect

The Matthew Effect isn’t the reality TV show it sounds like.

For unto every one that hath shall be given, and he shall have abundance: but from him that hath not shall be taken even that which he hath. —Matthew 25:29, King James Bible.

It’s the Biblical idea that the rich get richer, and it’s become a popular party trick among sociologists (yes, sociologists go to parties) describing how society works. In academia, the phrase is brought up alongside evidence that shows previous grant-recipients are more likely to receive new grants than their peers, and the more money a researcher has been awarded, the more they’re likely to get going forward.

The Matthew Effect is also employed metaphorically, when it comes to citations. He who gets some citations will accrue more; she who has the most citations will accrue them exponentially faster. There are many correct explanations, but the simplest one will do here: 

If Susan’s article on the danger of velociraptors is cited by 15 other articles, I am more likely to find it and cite her than another article on velociraptors containing the same information, that has never been citedThat’s because when I’m reading research, I look at who’s being cited. The more Susan is cited, the more likely I’ll eventually come across her article and cite it myself, which in turn increases the likelihood that much more that someone else will find her article through my own citations. Continue ad nauseam.

Some of you are thinking this is stupid. Maybe it’s trivially correct, but missing the bigger picture: quality. What if Susan’s velociraptor research is simply better than the competing research, and that’s why it’s getting cited more?

Yes, that’s also an issue. Noticeably awful research simply won’t get much traction. 1 Let’s disqualify it from the citation game. The point is there is lots of great research out there, waiting to be read and built upon, and its quality isn’t the sole predictor of its eventual citation success.

In fact, quality is a mostly-necessary but completely insufficient indicator of research success. Superstar popularity of research depends much more on the citation effects I mentioned above – more citations begets even more. Previous success is the best predictor of future success, mostly independent of the quality of research being shared.

Example of positive feedback loops pushing some articles to citation stardom.
Example of positive feedback loops pushing some articles to citation stardom. [via]
This is all pretty hand-wavy. How do we know success is more important than quality in predicting success? Uh, basically because of Napster.

Popular Music

If VH1 were to produce a retrospective on the first decade of the 21st century, perhaps its two biggest subjects would be illegal music sharing and VH1’s I Love the 19xx… TV series. Napster came and went, followed by LimeWire, eDonkey2000, AudioGalaxy, and other services sued by Metallica. Well-known early internet memes like Hamster Dance and All Your Base Are Belong To Us spread through the web like socially transmitted diseases, and researchers found this the perfect opportunity to explore how popularity worked. Experimentally.

In 2006, a group of Columbia University social scientists designed a clever experiment to test why some songs became popular and others did not, relying on the public interest in online music sharing. They created a music downloading site which gathered 14,341 users, each one to become a participant in their social experiment.

The cleverness arose out of their experimental design, which allowed them to get past the pesky problem of history only ever happening once. It’s usually hard to learn why something became popular, because you don’t know what aspects of its popularity were simply random chance, and what aspects were genuine quality. If you could, say, just rerun the 1960s, changing a few small aspects here or there, would the Beatles still have been as successful? We can’t know, because the 1960s are pretty much stuck having happened as they did, and there’s not much we can do to change it. 2

But this music-sharing site could rerun history—or at least, it could run a few histories simultaneously. When they signed up, each of the site’s 14,341 users were randomly sorted into different groups, and their group number determined how they were presented music. The musical variety was intentionally obscure, so users wouldn’t have heard the bands before.

A user from the first group, upon logging in, would be shown songs in random order, and were given the option to listen to a song, rate it 1-5, and download it. Users from group #2, instead, were shown the songs ranked in order of their popularity among other members of group #2. Group #3 users were shown a similar rank-order of popular songs, but this time determined by the song’s popularity within group #3. So too for groups #4-#9. Every user could listen to, rate, and download music.

Essentially, the researchers put the participants into 9 different self-contained petri dishes, and waited to see which music would become most popular in each. Ranking and download popularity from group #1 was their control group, in that members judged music based on their quality without having access to social influence. Members of groups #2-#9 could be influenced by what music was popular with their peers within the group. The same songs circulated in each petri dish, and each petri dish presented its own version of history.

Music sharing site from Columbia study.
Music sharing site from Columbia study.

No superstar songs emerged out of the control group. Positive feedback loops weren’t built into the system, since popularity couldn’t beget more popularity if nobody saw what their peers were listening to. The other 8 musical petri dishes told a different story, however. Superstars emerged in each, but each group’s population of popular music was very different. A song’s popularity in each group was slightly related to its quality (as judged by ranking in the control group), but mostly it was social-influence-produced chaos. The authors put it this way:

In general, the “best” songs never do very badly, and the “worst” songs never do extremely well, but almost any other result is possible. —Salganik, Dodds, & Watts, 2006

These results became even more pronounced when the researchers increased the visibility of social popularity in the system. The rich got even richer still. A lot of it has to do with timing. In each group, the first few good songs to become popular are the ones that eventually do the best, simply by an accident of circumstance. The first few popular songs appear at the top of the list, for others to see, so they in-turn become even more popular, and so ad infinitum.  The authors go on:

experts fail to predict success not because they are incompetent judges or misinformed about the preferences of others, but because when individual decisions are subject to social influence, markets do not simply aggregate pre-existing individual preferences.

In short, quality is a necessary but insufficient criteria for ultimate success. Social influence, timing, randomness, and other non-qualitative features of music are what turn a good piece of music into an off-the-charts hit.

Wait what about science?

Compare this to what makes a “well-respected” scientist: it ain’t all citations and social popularity, but they play a huge role. And as I described above, simply out of exposure-fueled-propagation, the more citations someone accrues, the more citations they are likely to accrue, until we get a situation like the Yankees (40 world series appearances, versus 20 appearances by the Giants) on our hands. Superstars are born, who are miles beyond the majority of working researchers in terms of grants, awards, citations, etc. Social scientists call this preferential attachment.

Which is fine, I guess. Who cares if scientific popularity is so skewed as long as good research is happening? Even if we take the Columbia social music experiment at face-value, an exact analog for scientific success, we know that the most successful are always good scientists, and the least successful are always bad ones, so what does it matter if variability within the ranks of the successful is so detached from quality?

Except, as anyone studying their #OccupyWallstreet knows, it ain’t that simple in a scarce economy. When the rich get richer, that money’s gotta come from somewhere. Like everything else (cf. the law of conservation of mass), academia is a (mostly) zero-sum game, and to the victors go the spoils. To the losers? Meh.

So let’s talk scarcity.

The 41st Chair

The same guy who who introduced the concept of the Matthew Effect to scientific grants and citations, Robert K. Merton (…of Columbia University), also brought up “the 41st chair” in the same 1968 article.

Merton’s pretty great, so I’ll let him do the talking:

In science as in other institutional realms, a special problem in the workings of the reward system turns up when individuals or organizations take on the job of gauging and suitably rewarding lofty performance on behalf of a large community. Thus, that ultimate accolade in 20th-century science, the Nobel prize, is often assumed to mark off its recipients from all the other scientists of the time. Yet this assumption is at odds with the well-known fact that a good number of scientists who have not received the prize and will not receive it have contributed as much to the advancement of science as some of the recipients, or more.

This can be described as the phenomenon of “the 41st chair.” The derivation of this tag is clear enough. The French Academy, it will be remembered, decided early that only a cohort of 40 could qualify as members and so emerge as immortals. This limitation of numbers made inevitable, of course, the exclusion through the centuries of many talented individuals who have won their own immortality. The familiar list of occupants of this 41st chair includes Descartes, Pascal, Moliere, Bayle, Rousseau, Saint-Simon, Diderot, Stendahl, Flaubert, Zola, and Proust


But in greater part, the phenomenon of the 41st chair is an artifact of having a fixed number of places available at the summit of recognition. Moreover, when a particular generation is rich in achievements of a high order, it follows from the rule of fixed numbers that some men whose accomplishments rank as high as those actually given the award will be excluded from the honorific ranks. Indeed, their accomplishments sometimes far outrank those which, in a time of less creativity, proved
enough to qualify men for his high order of recognition.

The Nobel prize retains its luster because errors of the first kind—where scientific work of dubious or inferior worth has been mistakenly honored—are uncommonly few. Yet limitations of the second kind cannot be avoided. The small number of awards means that, particularly in times of great scientific advance, there will be many occupants of the 41st chair (and, since the terms governing the award of the prize do not provide for posthumous recognition, permanent occupants of that chair).

Basically, the French Academy allowed only 40 members (chairs) at a time. We can be reasonably certain those members were pretty great, but we can’t be sure that equally great—or greater—women existed who simply never got the opportunity to participate because none of the 40 members died in time.

These good-enough-to-be-members-but-weren’t were said to occupy the French Academy’s 41st chair, an inevitable outcome of a scarce economy (40 chairs) when the potential number benefactors of this economy far outnumber the goods available (40). The population occupying the 41st chair is huge, and growing, since the same number of chairs have existed since 1634, but the population of France has quadrupled in the intervening four centuries.

Returning to our question of “so what if rich-get-richer doesn’t stick the best people at the top, since at least we can assume the people at the top are all pretty good anyway?”, scarcity of chairs is the so-what.

Since faculty jobs are stagnating compared to adjunct work, yet new PhDs are being granted faster than new jobs become available, we are presented with the much-discussed crisis in higher education. Don’t worry, we’re told, academia is a meritocracy. With so few jobs, only the cream of the crop will get them. The best work will still be done, even in these hard times.

Recent Science PhD growth in the U.S. [via]
Recent Science PhD growth in the U.S. [via]
Unfortunately, as the Columbia social music study (among many other studies) showed, true meritocracies are impossible in complex social systems. Anyone who plays the academic game knows this already, and many are quick to point it out when they see people in much better jobs doing incredibly stupid things. What those who point out the falsity of meritocracy often get wrong, however, is intention: the idea that there is no meritocracy because those in power talk the meritocracy talk, but don’t then walk the walk. I’ll talk a bit later about how, even if everyone is above board in trying to push the best people forward, occupants of the 41st chair will still often wind up being more deserving than those sitting in chairs 1-40. But more on that later.

For now, let’s start building a metaphor that we’ll eventually over-extend well beyond its usefulness. Remember that kids’ game Musical Chairs, where everyone’s dancing around a bunch of chairs while the music is playing, but as soon as the music stops everyone’s got to find a chair and sit down? The catch, of course, is that there are fewer chairs than people, so someone always loses when the music stops.

The academic meritocracy works a bit like this. It is meritocratic, to a point: you can’t even play the game without proving some worth. The price of admission is a Ph.D. (which, granted, is more an endurance test than an intelligence test, but academic success ain’t all smarts, y’know?), a research area at least a few people find interesting and believe you’d be able to do good work in it, etc. It’s a pretty low meritocratic bar, since it described 50,000 people who graduated in the U.S. in 2008 alone, but it’s a bar nonetheless. And it’s your competition in Academic Musical Chairs.

Academic Musical Chairs

Time to invent a game! It’s called Academic Musical Chairs, the game where everything’s made up and the points don’t matter. It’s like Regular Musical Chairs, but more complicated (see Fig. 1). Also the game is fixed.

Figure 1: Academic Musical Chairs
Figure 1: Academic Musical Chairs

See those 40 chairs in the middle green zone? People sitting in them are the winners. Once they’re seated they have what we call in the game “tenure”, and they don’t get up until they die or write something controversial on twitter. Everyone bustling around them, the active players, are vying for seats while they wait for someone to die; they occupy the yellow zone we call “the 41st chair”. Those beyond that, in the red zone, can’t yet (or may never) afford the price of game admission; they don’t have a Ph.D., they already said something controversial on Twitter, etc. The unwashed masses, you know?

As the music plays, everyone in the 41st chair is walking around in a circle waiting for someone to die and the music to stop. When that happens, everyone rushes to the empty seat. A few invariably reach it simultaneously, until one out-muscles the others and sits down. The sitting winner gets tenure. The music starts again, and the line continues to orbit the circle.

If a player spends too long orbiting in the 41st chair, he is forced to resign. If a player runs out of money while orbiting, she is forced to resign. Other factors may force a player to resign, but they will never appear in the rulebook and will always be a surprise.

Now, some players are more talented than others, whether naturally or through intense training. The game calls this “academic merit”, but it translates here to increased speed and strength, which helps some players reach the empty chair when the music stops, even if they’re a bit further away. The strength certainly helps when competing with others who reach the chair at the same time.

A careful look at Figure 1 will reveal one other way players might increase their chances of success when the music stops. The 41st chair has certain internal shells, or rings, which act a bit like that fake model of an atom everyone learned in high-school chemistry. Players, of course, are the electrons.

Electron shells. [via]
Electron shells. [via]
You may remember that the further out the shell, the more electrons can occupy it(-ish): the first shell holds 2 electrons, the second holds 8; third holds 18; fourth holds 32; and so on. The same holds true for Academic Musical Chairs: the coveted interior ring only fits a handful of players; the second ring fits an order of magnitude more; the third ring an order of magnitude more than that, and so on.

Getting closer to the center isn’t easy, and it has very little to do with your “academic rigor”! Also, of course, the closer you are to the center, the easier it is to reach either the chair, or the next level (remember positive feedback loops?). Contrariwise, the further you are from the center, the less chance you have of ever reaching the core.

Many factors affect whether a player can proceed to the next ring while the music plays, and some factors actively count against a player. Old age and being a woman, for example, take away 1 point. Getting published or cited adds points, as does already being friends with someone sitting in a chair (the details of how many points each adds can be found in your rulebook). Obviously the closer you are to the center, the easier you can make friends with people in the green core, which will contribute to your score even further. Once your score is high enough, you proceed to the next-closest shell.

Hooray, someone died! Let’s watch what happens.

The music stops. The people in the innermost ring who have the luckiest timing (thus are closest to the empty chair) scramble for it, and a few even reach it. Some very well-timed players from the 2nd & 3rd shells also reach it, because their “academic merit” has lent them speed and strength to reach past their position. A struggle ensues. Miraculously, a pregnant black woman sits down (this almost never happens), though not without some bodily harm, and the music begins again.

Oh, and new shells keep getting tacked on as more players can afford the cost of admission to the yellow zone, though the green core remains the same size.

Bizarrely, this is far from the first game of this nature. A Spanish boardgame from 1587 called the Courtly Philosophy had players move figures around a board, inching closer to living a luxurious life in the shadow of a rich patron. Random chance ruled their progression—a role of the dice—and occasionally they’d reach a tile that said things like: “Your patron dies, go back 5 squares”.

The courtier's philosophy. [via]
The courtier’s philosophy. [via]
But I digress. Let’s temporarily table the scarcity/41st-chair discussion and get back to the Matthew Effect.

The View From Inside

A friend recently came to me, excited but nervous about how well they were being treated by their department at the expense of their fellow students. “Is this what the Matthew Effect feels like?” they asked. Their question is the reason I’m writing this post, because I spent the next 24 hours scratching my head over “what does the Matthew Effect feel like?”.

I don’t know if anyone’s looked at the psychological effects of the Matthew Effect (if you do, please comment?), but my guess is it encompasses two feelings: 1) impostor syndrome, and 2) hard work finally paying off.

Since almost anyone who reaps the benefits of the Matthew Effect in academia will be an intelligent, hard-working academic, a windfall of accruing success should feel like finally reaping the benefits one deserves. You probably realize that luck played a part, and that many of your harder-working, smarter friends have been equally unlucky, but there’s no doubt in your mind that, at least, your hard work is finally paying off and the academic community is beginning to recognize that fact. No matter how unfair it is that your great colleagues aren’t seeing the same success.

But here’s the thing. You know how in physics, gravity and acceleration feel equivalent? How, if you’re in a windowless box, you wouldn’t be able to tell the difference between being stationary on Earth, or being pulled by a spaceship at 9.8 m/s2 through deep space? Success from merit or from Matthew Effect probably acts similarly, such that it’s impossible to tell one from the other from the inside.

Gravity vs. Acceleration. [via]
Gravity vs. Acceleration. [via]
Incidentally, that’s why the last advice you ever want to take is someone telling you how to succeed from their own experience.


Since we’ve seen explosive success requires but doesn’t rely on skill, quality, or intent, the most successful people are not necessarily in the best position to understand the reason for their own rise. Their strategies may have paid off, but so did timing, social network effects, and positive feedback loops. The question you should be asking is, why didn’t other people with the same strategies also succeed?

Keep this especially in mind if you’re a student, and your tenured-professor advised you to seek an academic career. They may believe that giving you their strategies for success will help you succeed, when really they’re just giving you one of 50,000 admission tickets to Academic Musical Chairs.

Building a Meritocracy

I’m teetering well-past the edge of speculation here, but I assume the communities of entrenched academics encouraging undergraduates into a research career are the same communities assuming a meritocracy is at play, and are doing everything they can in hiring and tenure review to ensure a meritocratic playing field.

But even if gender bias did not exist, even if everyone responsible for decision-making genuinely wanted a meritocracy, even if the game weren’t rigged at many levels, the economy of scarcity (41st chair) combined with the Matthew Effect would ensure a true meritocracy would be impossible. There are only so many jobs, and hiring committees need to choose some selection criteria; those selection criteria will be subject to scarcity and rich-get-richer effects.

I won’t prove that point here, because original research is beyond the scope of this blog post, but I have a good idea of how to do it. In fact, after I finish writing this, I probably will go do just that. Instead, let me present very similar research, and explain how that method can be used to answer this question.

We want an answer to the question of whether positive feedback loops and a scarce economy are sufficient to prevent the possibility of a meritocracy. In 1971, Tom Schelling asked an unrelated question which he answered using a very relevant method: can racial segregation manifest in a community whose every actor is intent on not living a segregated life? Spoiler alert: yes.

He answered this question using by simulating an artificial world—similar in spirit to the Columbia social music experiment, except for using real participants, he experimented on very simple rule-abiding game creatures of his own invention. A bit like having a computer play checkers against itself.

The experiment is simple enough: a bunch of creatures occupy a checker board, and like checker pieces, they’re red or black. Every turn, one creature has the opportunity to move randomly to another empty space on the board, and their decision to move is based on their comfort with their neighbors. Red pieces want red neighbors, and black pieces want black neighbors, and they keep moving randomly ’till they’re all comfortable. Unsurprisingly, segregated creature communities appear in short order.

What if we our checker-creatures were more relaxed in their comforts? They’d be comfortable as long as they were in the majority; say, at least 50% of their neighbors were the same color. Again, let the computer play itself for a while, and within a few cycles the checker board is once again almost completely segregated.

Schelling segregation. [via]
Schelling segregation. [via]
What if the checker pieces are excited about the prospect of a diverse neighborhood? We relax the criteria even more, so red checkers only move if fewer than a third of their neighbors are red (that is, they’re totally comfortable with 66% of their neighbors being black)? If we run the experiment again, we see, again, the checker board breaks up into segregated communities.

Schelling’s claim wasn’t about how the world worked, but about what the simplest conditions were that could still explain racism. In his fictional checkers-world, every piece could be generously interested in living in a diverse neighborhood, and yet the system still eventually resulted in segregation. This offered a powerful support for the theory that racism could operate subtly, even if every actor were well-intended.

Vi Hart and Nicky Case created an interactive visualization/game that teaches Schelling’s segregation model perfectly. Go play it. Then come back. I’ll wait.

Such an experiment can be devised for our 41st-chair/positive-feedback system as well. We can even build a simulation whose rules match the Academic Musical Chairs I described above. All we need to do is show that a system in which both effects operate (a fact empirically proven time and again in academia) produces fundamental challenges for meritocracy. Such a model would be show that simple meritocratic intent is insufficient to produce a meritocracy. Hulk smashing the myth of the meritocracy seems fun; I think I’ll get started soon.

The Social Network

Our world ain’t that simple. For one, as seen in Academic Musical Chairs, your place in the social network influences your chances of success. A heavy-hitting advisor, an old-boys cohort, etc., all improve your starting position when you begin the game.

To put it more operationally, let’s go back to the Columbia social music experiment. Part of a song’s success was due to quality, but the stuff that made stars was much more contingent on chance timing followed by positive feedback loops. Two of the authors from the 2006 study wrote another in 2007, echoing this claim that good timing was more important than individual influence:

models of information cascades, as well as human subjects experiments that have been designed to test the models (Anderson and Holt 1997; Kubler and Weizsacker 2004), are explicitly constructed such that there is nothing special about those individuals, either in terms of their personal characteristics or in their ability to influence others. Thus, whatever influence these individuals exert on the collective outcome is an accidental consequence of their randomly assigned position in the queue.

These articles are part of a large literature in predicting popularity, viral hits, success, and so forth. There’s The Pulse of News in Social Media: Forecasting Popularity by Bandari, Asur, & Huberman, which showed that a top predictor of newspaper shares was the source rather than the content of an article, and that a major chunk of articles that do get shared never really make it to viral status. There’s Can Cascades be Predicted? by Cheng, Adamic, Dow, Kleinberg, and Leskovec (all-star cast if ever I saw one), which shows the remarkable reliance on timing & first impressions in predicting success, and also the reliance on social connectivity. That is, success travels faster through those who are well-connected (shocking, right?), and structural properties of the social network are important. This study by Susarla et al. also shows the importance of location in the social network in helping push those positive feedback loops, effecting the magnitude of success in YouTube Video shares.

Twitter information cascade. [via]
Twitter information cascade. [via]
Now, I know, social media success does not an academic career predict. The point here, instead, is to show that in each of these cases, before sharing occurs and not taking into account social media effects (that is, relying solely on the merit of the thing itself), success is predictable, but stardom is not.

Concluding, Finally

Relating it to Academic Musical Chairs, it’s not too difficult to say whether someone will end up in the 41st chair, but it’s impossible to tell whether they’ll end up in seats 1-40 until you keep an eye on how positive feedback loops are affecting their career.

In the academic world, there’s a fertile prediction market for Nobel Laureates. Social networks and Matthew Effect citation bursts are decent enough predictors, but what anyone who predicts any kind of success will tell you is that it’s much easier to predict the pool of recipients than it is to predict the winners.

Take Economics. How many working economists are there? Tens of thousands, at least. But there’s this Econometric Society which began naming Fellows in 1933, naming 877 Fellows by 2011. And guess what, 60 of 69 Nobel Laureates in Economics before 2011 were Fellows of the society. The other 817 members are or were occupants of the 41st chair.

The point is (again, sorry), academic meritocracy is a myth. Merit is a price of admission to the game, but not a predictor of success in a scarce economy of jobs and resources. Once you pass the basic merit threshold and enter the 41st chair, forces having little to do with intellectual curiosity and rigor guide eventual success (ahem). Small positive biases like gender, well-connected advisors, early citations, lucky timing, etc. feed back into increasingly larger positive biases down the line. And since there are only so many faculty jobs out there, these feedback effects create a naturally imbalanced playing field. Sometimes Einsteins do make it into the middle ring, and sometimes they stay patent clerks. Or adjuncts, I guess. Those who do make it past the 41st chair are poorly-suited to tell you why, because by and large they employed the same strategies as everybody else.

Figure 1: Academic Musical Chairs
Yep, Academic Musical Chairs

And if these six thousand words weren’t enough to convince you, I leave you with this article and this tweet. Have a nice day!

Addendum for Historians

You thought I was done?

As a historian of science, this situation has some interesting repercussions for my research. Perhaps most importantly, it and related concepts from Complex Systems research offer a middle ground framework between environmental/contextual determinism (the world shapes us in fundamentally predictable ways) and individual historical agency (we possess the power to shape the world around us, making the world fundamentally unpredictable).

More concretely, it is historically fruitful to ask not simply what non-“scientific” strategies were employed by famous scientists to get ahead (see Biagioli’s Galileo, Courtier), but also what did or did not set those strategies apart from the masses of people we no longer remember. Galileo, Courtier provides a great example of what we historians can do on a larger scale: it traces Galileo’s machinations to wind up in the good graces of a wealthy patron, and how such a system affected his own research. Using recently-available data on early modern social and scholarly networks, as well as the beginnings of data on people’s activities, interests, practices, and productions, it should be possible to zoom out from Biagioli’s viewpoint and get a fairly sophisticated picture of trajectories and practices of people who weren’t Galileo.

This is all very preliminary, just publicly blogging whims, but I’d be fascinated by what a wide-angle (dare I say, macroscopic?) analysis of the 41st chair in could tell us about how social and “scientific” practices shaped one another in the 16th and 17th centuries. I believe this would bear previously-impossible fruit, since a lone historian grasping ten thousand tertiary actors at once is a fool’s errand, but is a walk in the park for my laptop.

As this really is whim-blogging, I’d love to hear your thoughts.


  1. Unless it’s really awful, but let’s avoid that discussion here.
  2. short of a TARDIS.

Representation at Digital Humanities Conferences (2000-2015)

Nickoal Eichmann (corresponding author), Jeana Jorgensen, Scott B. Weingart 1

NOTE: This is a pre-peer reviewed draft submitted for publication in Feminist Debates in Digital Humanities, eds. Jacque Wernimont and Elizabeth Losh, University of Minnesota Press (2017). Comments are welcome, and a downloadable dataset / more figures are forthcoming. This chapter will be released alongside another on the history of DH conferences, co-authored by Weingart & Eichmann (forthcoming), which will go into further detail on technical aspects of this study, including the data collection & statistics. Many of the materials first appeared on this blog. To cite this preprint, use the figshare DOI:  https://dx.doi.org/10.6084/m9.figshare.3120610.v1


Digital Humanities (DH) is said to have a light side and a dark side. Niceness, globality, openness, and inclusivity sit at one side of this binary caricature; commodification, neoliberalism, techno-utopianism, and white male privilege sit at the other. At times, the plurality of DH embodies both descriptions.

We hope a diverse and critical DH is a goal shared by all. While DH, like the humanities writ large, is not a monolith, steps may be taken to improve its public face and shared values through positively influencing its communities. The Alliance of Digital Humanities Organizations’ (ADHO’s) annual conference hosts perhaps the largest such community. As an umbrella organization of six international digital humanities constituent organizations, as well as 200 DH centers in a few dozen countries, ADHO and its conference ought to represent the geographic, disciplinary, and demographic diversity of those who identify as digital humanists.

The annual conference offers insight into how the world sees DH. While it may not represent the plurality of views held by self-described digital humanists, the conference likely influences the values of its constituents. If the conference glorifies Open Access, that value will be taken up by its regular attendees; if the conference fails to prioritize diversity, this too will be reinforced.

This chapter explores fifteen years of DH conferences, presenting a quantified look at the values implicitly embedded in the event. Women are consistently underrepresented, in spite of the fact that the most prominent figures at the conference are as likely women as men. The geographic representation of authors has become more diverse over time—though authors with non-English names are still significantly less likely to pass peer review. The topical landscape is heavily gendered, suggesting a masculine bias may be built into the value system of the conference itself. Without data on skin color or ethnicity, we are unable to address racial or related diversity and bias here.

There have been some improvements over time and, especially recently, a growing awareness of diversity-related issues. While many of the conference’s negative traits are simply reflections of larger entrenched academic biases, this is no comfort when self-reinforcing biases foster a culture of microaggression and white male privilege. Rather than using this study as an excuse to write off DH as just another biased community, we offer statistics, critiques, and suggestions as a vehicle to improve ADHO’s conference, and through it the rest of self-identified Digital Humanities.


Digital humanities (DH), we are told, exists under a “big tent”, with porous borders, little gatekeeping, and, heck, everyone’s just plain “nice”. Indeed, the term itself is not used definitionally, but merely as a “tactical convenience” to get stuff done without worrying so much about traditional disciplinary barriers. DH is “global”, “public”, and diversely populated. It will “save the humanities” from its crippling self-reflection (cf. this essay), while simultaneously saving the computational social sciences from their uncritical approaches to data. DH contains its own mirror: it is both humanities done digitally, and the digital as scrutinized humanistically. As opposed to the staid, backwards-looking humanities we are used to, the digital humanities “experiments”, “plays”, and even “embraces failure” on ideological grounds. In short, we are the hero Gotham needs.

Digital Humanities, we are told, is a narrowly-defined excuse to push a “neoliberal agenda”, a group of “bullies” more interested in forcing humanists to code than in speaking truth to power. It is devoid of cultural criticism, and because of the way DHers uncritically adopt tools and methods from the tech industry, they in fact often reinforce pre-existing power structures. DH is nothing less than an unintentionally rightist vehicle for techno-utopianism, drawing from the same font as MOOCs and complicit in their devaluing of education, diversity, and academic labor. It is equally complicit in furthering both the surveillance state and the surveillance economy, exemplified in its stunning lack of response to the Snowden leaks. As a progeny of the computer sciences, digital humanities has inherited the same lack of gender and racial diversity, and any attempt to remedy the situation is met with incredible resistance.

The truth, as it so often does, lies somewhere in the middle of these extreme caricatures. It’s easy to ascribe attributes to Digital Humanities synecdochically, painting the whole with the same brush as one of its constituent parts. One would be forgiven, for example, for coming away from the annual international ADHO Digital Humanities conference assuming DH were a parade of white men quantifying literary text. An attendee of HASTAC, on the other hand, might leave seeing DH as a diverse community focused on pedagogy, but lacking in primary research. Similar straw-snapshots may be drawn from specific journals, subcommunities, regions, or organizations.

But these synecdoches have power. Our public face sets the course of DH, via who it entices to engage with us, how it informs policy agendas and funding allocations, and who gets inspired to be the next generation of digital humanists. Especially important is the constituency and presentation of the annual Digital Humanities conference. Every year, several hundred students, librarians, staff, faculty, industry professionals, administrators and researchers converge for the conference, organized by the Alliance of Digital Humanities Organizations (ADHO). As an umbrella organization of six international digital humanities constituent organizations, as well as 200 DH centers in a few dozen countries, ADHO and its conference ought to represent the geographic, disciplinary, and demographic diversity of those who identify as digital humanists. And as DH is a community that prides itself on its activism and its social/public goals, if the annual DH conference does not celebrate this diversity, the DH community may suffer a crisis of identity (…okay, a bigger crisis of identity).

So what does the DH conference look like, to an outsider? Is it diverse? What topics are covered? Where is it held? Who is participating, who is attending, and where are they coming from? This essay offers incomplete answers to these questions for fifteen years of DH conferences (2000-2015), focusing particularly on DH2013 (Nebraska, USA), DH2014 (Lausanne, Switzerland), and DH2015 (Sydney, Australia). 2 We do so with a double-agenda: (1) to call out the biases and lack of diversity at ADHO conferences in the earnest hope it will help improve future years’ conferences, and (2) to show that simplistic, reductive quantitative methods can be applied critically, and need not feed into techno-utopic fantasies or an unwavering acceptance of proxies as a direct line to Truth. By “distant reading” DH and turning our “macroscopes” on ourselves, we offer a critique of our culture, and hopefully inspire fruitful discomfort in DH practitioners who apply often-dehumanizing tools to their subjects, but have not themselves fallen under the same distant gaze.

Among other findings, we observe a large gender gap for authorship that is not mirrored among those who simply attend the conference. We also show a heavily gendered topical landscape, which likely contributes to topical biases during peer review. Geographic diversity has improved over fifteen years, suggesting ADHO’s strategy to expand beyond the customary North American / European rotation was a success. That said, there continues to be a visible bias against non-English names in the peer review process. We could not get data on ethnicity, race, or skin color, but given our regional and name data, as well as personal experience, we suspect in this area, diversity remains quite low.

We do notice some improvement over time and, especially in the last few years, a growing awareness of our own diversity problems. The #whatifDH2016 3 hashtag, for example, was a reaction to an all-male series of speakers introducing DH2015 in Sydney. The hashtag caught on and made it to ADHO’s committee on conferences, who will use it in planning future events. Our remarks here are in the spirit of #whatifDH2016; rather than using this study as an excuse to defame digital humanities, we hope it becomes a vehicle to improve ADHO’s conference, and through it the rest of our community.

Social Justice and Equality in the Digital Humanities

Diversity in the Academy

In order to contextualize gender and ethnicity in the DH community, we must take into account developments throughout higher education. This is especially important since much of DH work is done in university and other Ivory Tower settings. Clear progress has been made from the times when all-male, all-white colleges were the norm, but there are still concerns about the marginalization of scholars who are not white, male, able-bodied, heterosexual, or native English-speakers. Many campuses now have diversity offices and have set diversity-related goals at both the faculty and student levels (for example, see the Ohio State University’s diversity objectives and strategies 2007-12). On the digital front, blogs such as Conditionally Accepted, Fight the Tower, University of Venus, and more all work to expose the normative biases in academia through activist dialogue.

From both a historical and contemporary lens, there is data supporting the clustering of women and other minority scholars in certain realms of academia, from specific fields and subjects to contingent positions. When it comes to gender, the phrase “feminization” has been applied both to academia in general and to specific fields. It contains two important connotations: that of an area in which women are in the majority, and the sense of a change over time, such that numbers of women participants are increasing in relation to men (Leathwood and Read 2008, 10). It can also signal a less quantitative shift in values, “whereby ‘feminine’ values, concerns, and practices are seen to be changing the culture of an organization, a field of practice or society as a whole” (ibid).

In terms of specific disciplines, the feminization of academia has taken a particular shape. Historian Lynn Hunt suggests the following propositions about feminization in the humanities and history specifically: the feminization of history parallels what is happening in the social sciences and humanities more generally; the feminization of the social sciences and humanities is likely accompanied by a decline in status and resources; and other identity categories, such as ethnic minority status and age/generation, also interact with feminization in ways that are still becoming coherent.

Feminization has clear consequences for the perception and assignation of value of a given field. Hunt writes: “There is a clear correlation between relative pay and the proportion of women in a field; those academic fields that have attracted a relatively high proportion of women pay less on average than those that have not attracted women in the same numbers.” Thus, as we examine the topics that tend to be clustered by gender in DH conference submissions, we must keep in mind the potential correlations of feminization and value, though it is beyond the scope of this paper to engage in chicken-or-egg debates about the causal relationship between misogyny and the devaluing of women’s labor and women’s topics.

There is no obvious ethnicity-based parallel to the concept of the feminization of academia; it wouldn’t be culturally intelligible to talk about the “people-of-colorization of academia”, or the “non-white-ization of academia.” At any rate, according to a U.S. Department of Education survey, in 2013 79% of all full-time faculty in degree-granting postsecondary institutions were white. The increase of non-white faculty from 2009 (19.2% of the whole) to 2013 (21.5%) is very small indeed.

Why does this matter? As Jeffrey Milem, Mitchell Chang, and Anthony Lising Antonio write in regard to faculty of color, “Having a diverse faculty ensures that students see people of color in roles of authority and as role models or mentors. Faculty of color are also more likely than other faculty to include content related to diversity in their curricula and to utilize active learning and student-centered teaching techniques…a coherent and sustained faculty diversity initiative must exist if there is to be any progress in diversifying the faculty” (25). By centering marginalized voices, scholarly institutions have the ability to send messages about who is worthy of inclusion.

Recent Criticisms of Diversity in DH

In terms of DH specifically, diversity within the community and conferences has been on the radar for several years, and has recently gained special attention, as digital humanists and other academics alike have called for critical and feminist engagement in diversity and a move away from what seems to be an exclusionary culture. In January 2011, THATCamp SoCal included a section called “Diversity in DH,” in which participants explored the lack of openness in DH and, in the end, produced a document, “Toward an Open Digital Humanities” that summarized their discussions. The “Overview” in this document mirrors the same conversation we have had for the last several years:

We recognize that a wide diversity of people is necessary to make digital humanities function. As such, digital humanities must take active strides to include all the areas of study that comprise the humanities and must strive to include participants of diverse age, generation, sex, skill, race, ethnicity, sexuality, gender, ability, nationality, culture, discipline, areas of interest. Without open participation and broad outreach, the digital humanities movement limits its capacity for critical engagement. (ibid)

This proclamation represents the critiques of the DH landscape in 2011, in which DH practitioners and participants were assumed to be privileged and white, that they excluded student-learners, and that they held myopic views of what constitutes DH. Most importantly for this chapter, THATCamp SoCal’s “Diversity in DH” section participants called for critical approaches and social justice of DH scholarship and participation, including “principles for feminist/non-exclusionary groundrules in each session (e.g., ‘step up/step back’) so that the loudest/most entitled people don’t fill all the quiet moments.” They also advocated defending the least-heard voices “so that the largest number of people can benefit…”

These voices certainly didn’t fall flat. However, since THATCamps are often comprised of geographically local DH microcommunities, they benefit from an inclusive environment but suffer as isolated events. As result, it seems that the larger, discipline-specific venues which have greater attendance and attraction continue to amplify privileged voices. Even so, 2011 continued to represent a year that called for critical engagement in diversity in DH, with an explicit “Big Tent” theme for DH2011 held in Stanford, California. Embracing the concept the “Big Tent” deliberately opened the doors and widened the spectrum of DH, at least in terms of methods and approaches. However, as Melissa Terras pointed out, DH was “still a very rich, very western academic field” (Terras, 2011), even with a few DH2011 presentations engaging specifically with topics of diversity in DH. 4

A focus on diversity-related issues has only grown in the interim. We’ve recently seen greater attention and criticism of DH exclusionary culture, for instance, at the 2015 Modern Language Association (MLA) annual convention, which included the roundtable discussion “Disrupting Digital Humanities.” It confronted the “gatekeeping impulse” in DH, and echoing THATCamp SoCal 2011, these panelists aimed to shut down hierarchical dialogues in DH, encourage non-traditional scholarship, amplify “marginalized voices,” advocate for DH novices, and generously support the work of peers. 5 The theme for DH2015 in Sydney, Australia was “Global Digital Humanities,” and between its successes and collective action arising from frustrations at its failures, the community seems poised to pay even greater attention to diversity. Other recent initiatives in this vein worth mention include #dhpoco, GO::DH, and Jacqueline Wernimont’s “Build a Better Panel,” 6 whose activist goals are helping diversify the community and raise awareness of areas where the community can improve.

While it would be fruitful to conduct a longitudinal historiographical analysis of diversity in DH, more recent criticisms illustrate a history of perceived exclusionary culture, which is why we hope to provide a data-driven approach to continue the conversation and call for feminist and critical engagement and intervention.


While DH as a whole has been critiqued for its lack of diversity and inclusion, how does the annual ADHO DH conference measure up? To explore this in a data-driven fashion, we have gathered publicly available annual ADHO conference programs and schedules from 2000-2015. From those conference materials, we have entered presentation and author information into a spreadsheet to analyze various trends over time, such as gender and geography as indicators of diversity. Particular information that we have collected includes: presentation title, keywords (if available), abstract and full-text (if available), presentation type, author name, author institutional affiliation and academic department (if available), and corresponding country of that affiliation at the time of the presentation(s). We normalized and hand-cleaned names, institutions, and departments, so that, to the best of our knowledge, each author entry represented a unique person and, accordingly, was assigned a unique ID. Next, we added gender information (m/f/other/unknown) to authors by a combination of hand-entry and automated inference. While this is problematic for many reasons, 7 since it does not allow for diversity in gender options and tracing gender changes over time, it does give us a useful preliminary lense to view gender diversity at DH conferences.

For 2013’s conference, ADHO instituted a series of changes aimed at improving inclusivity, diversity, and quality. This drive was steered by that year’s program committee chair, Bethany Nowviskie, alongside 2014’s chair, Melissa Terras. Their reformative goals matched our current goals in this essay, and speak to a long history of experimentation and improvement efforts on behalf of ADHO. Their changes included making the conference more welcome to outsiders through ending policies that only insiders knew about; making the CFP less complex and easier to translate into multiple languages; taking reviewer language competencies into account systematically; and streamlining the submission and review process.

The biggest noticeable change to DH2013, however, was the institution of a reviewer bidding process and a phase of semi-open peer review. Peer reviewers were invited to read through and rank every submitted abstract according to how qualified they felt to review the abstract. Following this, the conference committee would match submissions to qualified peer reviewers, taking into account conflicts of interest. Submitting authors were invited to respond to reviews, and the committee would make a final decision based on the various reviews and rebuttals.This continues to be the process through DH2016. Changes continue to be made, most recently in 2016 with the addition of “Diversity” and “Multilinguality” as new keywords authors can append to their submissions.

While the list of submitted abstracts was private, accessible only to reviewers, as reviewers ourselves we had access to the submissions during the bidding phase. We used this access to create a dataset of conference submissions for DH2013, DH2014, and DH2015, which includes author names, affiliations, submission titles, author-selected topics, author-chosen keywords, and submission types (long paper, short paper, poster, panel).

We augmented this dataset by looking at the final conference programs in ‘13, ‘14, and ‘15, noting which submissions eventually made it onto the final conference program, and how they changed from the submission to the final product. This allows us to roughly estimate the acceptance rate of submissions, by comparing the submitted abstract lists to the final programs. It is not perfect, however, given that we don’t actually know whether submissions that didn’t make it to the final program were rejected, or if they were accepted and withdrawn. We also do not know who reviewed what, nor do we know the reviewers’ scores or any associated editorial decisions.

The original dataset, then, included fields for title, authors, author affiliations, original submission type, final accepted type, topics, keywords, and a boolean field for whether a submission made it to the final conference program. We cleaned the data up by merging duplicate people, ensuring e.g., if “Melissa Terras” was an author on two different submissions, she counted as the same person. For affiliations, we semi-automatically merged duplicate institutions, found the countries they reside in, and assigned those countries to broad UN regions. We also added data to the set, first automatically guessing a gender for each author, and then correcting the guesses by hand.

Given that abstracts were submitted to conferences with an expectation of privacy, we have not released the full submission dataset; we have, however, released the full dataset of final conference programs. 8

We would like to acknowledge the gross and problematic simplifications involved in this process of gendering authors without their consent or input. As Miriam Posner has pointed out, with regards to Getty’s Union List of Author Names, “no self-respecting humanities scholar would ever get away with such a crude representation of gender in traditional work”. And yet, we represent authors in just this crude fashion, labeling authors as male, female, or unknown/other. We did not encode changes of author gender over time, even though we know of at least a few authors in the dataset for whom this applies. We do not use the affordances of digital data to represent the fluidity of gender. This is problematic for a number of reasons, not least of which because, when we take a cookie cutter to the world, everything in the world will wind up looking like cookies.

We made this decision because, in the end, all data quality is contingent to the task at hand. It is possible to acknowledge an ontology’s shortcomings while still occasionally using that ontology to a positive effect. This is not always the case: often poor proxies get in the way a research agenda (e.g., citations as indicators of “impact” in digital humanities), rather than align with it. In the humanities, poor proxies are much more likely to get in the way of research than help it along, and afford the ability to make insensitive or reductivist decisions in the name of “scale”.

For example, in looking for ethnic diversity of a discipline, one might analyze last names as a proxy for country of origin, or analyze the color of recognized faces in pictures from recent conferences as a proxy for ethnic genealogy. Among other reasons, this approach falls short because ethnicity, race, and skin color are often not aligned, and last names (especially in the U.S.) are rarely indicative of anything at all. But they’re easy solutions, so people use them. These are moments when a bad proxy (and for human categories, proxies are almost universally bad) does not fruitfully contribute to a research agenda. As George E.P. Box put it, “all models are wrong, but some are useful.”

Some models are useful. Sometimes, the stars align and the easy solution is the best one for the question. If someone were researching immediate reactions of racial bias in the West, analyzing skin tone may get us something useful. In this case, the research focus is not someone’s racial identity, but someone’s race as immediately perceived by others, which would likely align with skin tone. Simply: if a person looks black, they’re more likely to be treated as such by the (white) world at large. 9

We believe our proxies, though grossly inaccurate, are useful for the questions of gender and geographic diversity and bias. The first step to improving DH conference diversity is noticing a problem; our data show that problem through staggeringly imbalanced regional and gender ratios. With regards to gender bias, showing whether reviewers are less likely to accept papers from authors who appear to be women can reveal entrenched biases, whether or not the author actually identifies as a woman. With that said, we invite future researchers to identify and expand on our admitted categorical errors, allowing everyone to see the contours of our community with even greater nuance.


The annual ADHO conference has grown significantly in the last fifteen years, as described in our companion piece 10, within which can be found a great discussion of our methods. This piece, rather than covering overall conference trends, focuses specifically on issues of diversity and acceptance rates. We cover geographic and gender diversity from 2000-2015, with additional discussions of topicality and peer review bias beginning in 2013.


Women comprise 36.1% of the 3,239 authors to DH conference presentations over the last fifteen years, counting every unique author only once. Melissa Terras’ names appears on 29 presentations between 200-2015, and Scott B. Weingart’s name appears on 4 presentations, but for the purpose of this metric each name counts only once. Female authorship representation fluctuates between 29%-38% depending on the year.

Weighting every authorship event individually (i.e., Weingart’s name counts 4 times, Terras’ 29 times), women’s representation drops to 32.7%. This reveals that women are less likely to author multiple pieces compared to their male counterparts. More than a third of the DH authorship pool are women, but fewer than a third of every name that appears on a presentation is a woman’s. Even fewer single-authored pieces are by a woman; only 29.8% of the 984 single-authored works between 2000-2015 female-authored. About a third (33.4%) of first authors on presentations are women. See Fig. 1 for a breakdown of these numbers over time. Note the lack of periodicity, suggesting gender representation is not affected by whether the conference is held in Europe or North America (until 2015, the conference alternated locations every year). The overall ratio wavers, but is neither improving nor worsening over time.

Figure 1. re
Figure 1. Representation of Women at ADHO Conferences, 2000-2015.

The gender disparity sparked controversy at DH2015 in Sydney. It was, however, at odds with a common anecdotal awareness that many of the most respected role-models and leaders in the community are women. To explore this disconnect, we experimented with using centrality in co-authorship networks as a proxy for fame, respectability, and general presence within the DH consciousness. We assume that individuals who author many presentations, co-author with many people, and play a central role in connecting DH’s disparate communities of authorship are the ones who are most likely to garner the respect (or at least awareness) of conference attendees.

We created a network of authors connected to their co-authors from presentations between 2000-2015, with ties strengthening the more frequently two authors collaborate. Of the 3,239 authors in our dataset, 61% (1,750 individuals) are reachable by one another via their co-authorship ties. For example, Beth Plale is reachable by Alan Liu because she co-authored with J. Stephen Downie, who co-authored with Geoffrey Rockwell, who co-authored with Alan Liu. Thus, 61% of the network is connected in one large component, and there are 299 smaller components, islands of co-authorship disconnected from the larger community.

The average woman co-authors with 5 other authors, and the average man co-authors with 5.3 other authors. The median number of co-authors for both men and women is 4. The average and median of several centrality measurements (closeness, betweenness, pagerank, and eigenvector) for both men and women are nearly equivalent; that is, any given woman is just as likely to be near the co-authorship core as any given man. Naturally, this does not imply that half of the most central authors are women, since only a third of the entire authorship pool are women. It means instead that gender does not influence one’s network centrality. Or at least it should.

The statistics show a curious trend for the most central figures in the network. Of the top 10 authors who co-author with the most others, 60% are women. Of the top 20, 45% are women. Of the top 50, 38% are women. Of the top 100, 32% are women. That is, the over half the DH co-authorship stars are women, but the further towards the periphery you look, the more men occupy the middle-tier positions (i.e., not stars, but still fairly active co-authors). The same holds true for the various centrality measurements: betweenness (60% women in top 10; 40% in top 20; 32% in top 50; 34% in top 100), pagerank (50% women in top 10; 40% in top 20; 32% in top 50; 28% in top 100), and eigenvector (60% women in top 10; 40% in top 20; 40% in top 50; 34% in top 100).

In short, half or more of the DH conference stars are women, but as you creep closer to the network periphery, you are increasingly likely to notice the prevailing gender disparity. This supports the mismatch between an anecdotal sense that women play a huge role in DH, and the data showing they are poorly represented at conferences. The results also match with the fact that women are disproportionately more likely to write about management and leadership, discussed at greater length below.

The heavily-male gender skew at DH conferences may lead one to suspect a bias in the peer review process. Recent data, however, show that if such a bias exists, it is not direct. Over the past three conferences, 71% of women and 73% of men who submitted presentations passed the peer review process. The difference is not great enough to rule out random chance (p=0.16 using χ²). The skew at conferences is more a result of fewer women submitting articles than of women’s articles not getting accepted. The one caveat, explained more below, is that certain topics women are more likely to write about are also less likely to be accepted through peer-review.

This does not imply a lack of bias in the DH community. For example, although only 33.5% of authors at DH2015 in Sydney were women, 46% of conference attendees were women. If women were simply uninterested in DH, the split in attendance vs. authorship would not be so high.

In regard to discussions of women in different roles in the DH community – less the publishing powerhouses and more the community leaders and organizers – the concept of the “glass cliff” can be useful. Research on the feminization of academia in Sweden uses the term “glass cliff” as a “metaphor used to describe a phenomenon when women are appointed to precarious leadership roles associated with an increased risk of negative consequences when a company is performing poorly and for example is experiencing profit falls, declining stock performance, and job cuts” (Peterson 2014, 4). The female academics (who also occupied senior managerial positions) interviewed in Helen Peterson’s study expressed concerns about increasing workloads, the precarity of their positions, and the potential for interpersonal conflict.

Institutional politics may also play a role in the gendered data here. Sarah Winslow says of institutional context that “female faculty are less likely to be located at research institutions or institutions that value research over teaching, both of which are associated with greater preference for research” (779). The research, teaching, and service divide in academia remains a thorny issue, especially given the prevalence of what has been called the pink collar workforce in academia, or the disproportionate amount of women working in low-paying teaching-oriented areas. This divide likely also contributed to differing gender ratios between attendees and authors at DH2015.

While the gendered implications of time allocation in universities are beyond the scope of this paper, it might be useful to note that there might be long-term consequences for how people spend their time interacting with scholarly tasks that extend beyond one specific institution. Winslow writes: “Since women bear a disproportionate responsibility for labor that is institution-specific (e.g., institutional housekeeping, mentoring individual students), their investments are less likely to be portable across institutions. This stands in stark contrast to men, whose investments in research make them more highly desirable candidates should they choose to leave their own institutions” (790). How this plays out specifically in the DH community remains to be seen, but the interdisciplinarity of DH along with its projects that span multiple working groups and institutions may unsettle some of the traditional bias that women in academia face.


Until 2015, the DH conference alternated every year between North America and Europe. As expected, until recently, the institutions represented at the conference have hailed mostly from these areas, with the primary locus falling in North America. In fact, since 2000, North American authors were the largest authorial constituency at eleven of the fifteen conferences, even though North America only hosted the conference seven times in that period.

With that said, as opposed to gender representation, national and institutional diversity is improving over time. Using an Index of Qualitative Variation (IQV), institutional variation begins around 0.992 in 2000 and ends around 0.996 in 2015, with steady increases over time. National IQV begins around 0.79 in 2010 and ends around 0.83 in 2015, also with steady increases over time. The most recent conference was the first that included over 30% of authors and attendees arriving from outside Europe or North America. Now that ADHO has implemented a three-year cycle, with every third year marked by a movement outside its usual territory, that diversity is likely to increase further still.

The most well-represented institutions are not as dominating as some may expect, given the common view of DH as a community centered around particular powerhouse departments or universities. The university with the most authors contributing to DH conferences (2.4% of the total authors) is King’s College London, followed by the Universities of Illinois (1.85%), Alberta (1.83%), and Virginia (1.75%). The most prominent university outside of North America or Europe is Ritsumeikan University, contributing 1.07% of all DH conference authors. In all, over a thousand institutions have contributed authors to the conference, and that number increases every year.

While these numbers represent institutional origins, the data available does not allow any further diving into birth countries, native language, ethnic identities, etc. The 2013-2015 dataset, including peer review information, does yield some insight into geography-influenced biases that may map to language or identity. While the peer review data do not show any clear bias by institutional country, there is a very clear bias against names which do not appear frequently in the U.S. Census or Social Security Index. We discovered this when attempting to statistically infer the gender of authors using these U.S.-based indices. 11 From 2013-2015, presentations written by those with names appearing frequently in these indices were significantly more likely to be accepted than those written by authors with non-English names (p < 0.0001). Whereas approximately 72% of authors with common U.S. names passed peer review, only 61% of authors with uncommon names passed. Without more data, we have no idea whether this tremendous disparity is due to a bias against popular topics from non-English-speaking countries, a higher likelihood of peer reviewers rejecting text written by non-native writers, an implicit bias by peer reviewers when they see “foreign” names, or something else entirely.


When submitting a presentation, authors are given the opportunity to provide keywords for their submission. Some keywords can be chosen freely, while others must be chosen from a controlled list of about 100 potential topics. These controlled keywords are used to help in the process of conference organization and peer reviewer selection, and they stay roughly constant every year. New keywords are occasionally added to the list, as in 2016, where authors can now select three topics which were not previously available: “Digital Humanities – Diversity”, “Digital Humanities – Multilinguality”, and “3D Printing”. The 2000-2015 conference dataset does not include keywords for every article, so this analysis will only cover the more detailed dataset, 2013-2015, with additional data on submissions for DH2016.

From 2013-2016, presentations were tagged with an average of six controlled keywords per submission. The most-used keywords are unsurprising: “Text Analysis” (tagged on 22% of submissions), “Data Mining / Text Mining” (20%), “Literary Studies” (20%), “Archives, Repositories, Sustainability And Preservation” (19%), and “Historical Studies” (18%). The most frequently-used keyword potentially pertaining directly to issues of diversity, “Cultural Studies”, appears on on 14% of submissions from 2013-2016. Only 2% of submissions are tagged with “Gender Studies”. The two diversity-related keywords introduced this year are already being used surprisingly frequently, with 9% of submissions in 2016 tagged “Digital Humanities – Diversity” and 6% of submissions tagged “Digital Humanities – Multilinguality”. With over 650 conference submissions for 2016, this translates to a reasonably large community of DH authors presenting on topics related to diversity.

Joining the topic and gender data for 2013-2015 reveals the extent to which certain subject matters are gendered at DH conferences. 12 Women are twice as likely to use the “Gender Studies” tag as male authors, whereas men are twice as likely to use the “Asian Studies” tag as female authors. Subjects related to pedagogy, creative / performing arts, art history, cultural studies, GLAM (galleries, libraries, archives, museums), DH institutional support, and project design/organization/management are more likely to be presented by women. Men, on the other hand, are more likely to write about standards & interoperability, the history of DH, programming, scholarly editing, stylistics, linguistics, network analysis, and natural language processing / text analysis. It seems DH topics have inherited the usual gender skews associated with the disciplines in which those topics originate.

We showed earlier that there was no direct gender bias in the peer review process. While true, there appears to be indirect bias with respect to how certain gendered topics are considered acceptable by the DH conference peer reviewers. A woman has just as much chance of getting a paper through peer review as a man if they both submit a presentation on the same topic (e.g., both women and men have a 72% chance of passing peer review if they write about network analysis, or a 65% chance of passing peer review if they write about knowledge representation), but topics that are heavily gendered towards women are less likely to get accepted. Cultural studies has a 57% acceptance rate, gender studies 60%, pedagogy 51%. Male-skewed topics have higher acceptance rates, like text analysis (83%), programming (80%), or Asian studies (79%). The female-gendering of DH institutional support and project organization also supports our earlier claim that, while women are well-represented among the DH leadership, they are more poorly represented in those topics that the majority of authors are discussing (programming, text analysis, etc.).

Regarding the clustering – and devaluing – of topics that women tend to present on at DH conferences, the widespread acknowledgement of the devaluing of women’s labor may help to explain this. We discussed the feminization of academia above, and indeed, this is a trend seen in practically all facets of society. The addition of emotional labor or caretaking tasks complicates this. Economist Teresa Ghilarducchi explains: “a lot of what women do in their lives is punctuated by time outside of the labor market — taking care of family, taking care of children — and women’s labor has always been devalued…[people] assume that she had some time out of the labor market and that she was doing something that was basically worthless, because she wasn’t being paid for it.” In academia specifically, the labyrinthine relationship of pay to tasks/labor further obscures value: we are rarely paid per task (per paper published or presented) on the research front; service work is almost entirely invisible; and teaching factors in with course loads, often with more up-front transparency for contingent laborers such as adjuncts and part-timers.

Our results seem to point to less of an obvious bias against women scholars than a subtler bias against topics that women tend to gravitate toward, or are seen as gravitating toward. This is in line with the concept of postfeminism, or the notion that feminism has met its main goals (e.g. getting women the right to vote and the right to an education), and thus is irrelevant to contemporary social needs and discourse. Thoroughly enmeshed in neoliberal discourse, postfeminism makes discussing misogyny seem obsolete and obscures the subtler ways in which sexism operates in daily life (Pomerantz, Raby, and Stefanik 2013). While individuals may or may not choose to identify as postfeminist, the overarching beliefs associated with postfeminism have permeated North American culture at a number of levels, leading us to posit the acceptance of the ideals of postfeminism as one explanation for the devaluing of topics that seem associated with women.

Discussion and Future Research

The analysis reveals an annual DH conference with a growing awareness of diversity-related issues, with moderate improvements in regional diversity, stagnation in gender diversity, and unknown (but anecdotally poor) diversity with regards to language, ethnicity, and skin color. Knowledge at the DH conference is heavily gendered, though women are not directly biased against during peer review, and while several prominent women occupy the community’s core, women occupy less space in the much larger periphery. No single or small set of institutions dominate the conference attendance, and though North America’s influence on ADHO cannot be understated, recent ADHO efforts are significantly improving the geographic spread of its constituency.

The DH conference, and by extension ADHO, is not the digital humanities. It is, however, the largest annual gathering of self-identified digital humanists, 13 and as such its makeup holds influence over the community at large. Its priorities, successes, and failures reflect on DH, both within the community and to the outside world, and those priorities get reinforced in future generations. If the DH conference remains as it is—devaluing knowledge associated with femininity, comprising only 36% women, and rejecting presentations by authors with non-English names—it will have significant difficulty attracting a more diverse crowd without explicit interventions. Given the shortcomings revealed in the data above, we present some possible interventions that can be made by ADHO or its members to foster a more diverse community, inspired by #WhatIfDH2016:

  • As pointed out by Yvonne Perkins, Ask presenters to include a brief “Collections Used” section, when appropriate. Such a practice would highlight and credit the important work being done by those who aren’t necessarily engaging in publishable research, and help legitimize that work to conference attendees.

  • As pointed out by Vika Zafrin, create guidelines for reviewers explicitly addressing diversity, and provide guidance on noticing and reducing peer review bias.

  • As pointed out by Vika Zafrin, community members can make an effort to solicit presentation submissions from women and people of color.

  • As pointed out by Vika Zafrin, collect and analyze data on who is peer reviewing, to see whether or the extent to which biases creep in at that stage.

  • As pointed out by Aimée Morrison, ensure that the conference stage is at least as diverse as the conference audience. This can be accomplished in a number of ways, from conference organizers making sure their keynote speakers draw from a broad pool, to organizing last-minute lightning lectures specifically for those who are registered but not presenting.

  • As pointed out by Tonya Howe, encourage presentations or attendance from more process-oriented liberal arts delegates.

  • As pointed out by Christina Boyles, encourage the submission of research focused around the intersection of race, gender, and sexuality studies. This may be partially accomplished by including more topical categories for conference submissions, a step which ADHO has already taken for 2016.

  • As pointed out by many, take explicit steps in ensuring conference access to those with disabilities. We suggest this become an explicit part of the application package submitted by potential host institutions.

  • As pointed out by many, ensure the ease of participation-at-a-distance (both as audience and as speaker) for those without the resources to travel.

  • As requested by Karina van Dalen-Oskam, chair of ADHO’s Steering Committee, send her an email on how to navigate the difficult cultural issues facing an international organization.

  • Give marginalized communities greater representation in the DH Conference peer reviewer pool. This can be done grassroots, with each of us reaching out to colleagues to volunteer as reviewers, and organizationally, perhaps by ADHO creating a volunteer group to seek out and encourage more diverse reviewers.

  • Consider the difference between diversifying (verb) vs. talking about diversity (noun), and consider whether other modes of disrupting hegemony, such as decolonization and queering, might be useful in these processes.

  • Contribute to the #whatifDH2016 and #whatifDH2017 discussions on twitter with other ideas for improvements.

Many options are available to improve representation at DH conferences, and some encouraging steps are already being taken by ADHO and its members. We hope to hear more concrete steps that may be taken, especially learned from experiences in other communities or outside of academia, in order to foster a healthier and more welcoming conference going forward.

In the interest of furthering these goals and improving the organizational memory of ADHO, the public portion of the data (final conference programs with full text and unique author IDs) is available alongside this publication [will link in final draft]. With this, others may test, correct, or improve our work. We will continue work by extending the dataset back to 1990, continuing to collect for future conferences, and creating an infrastructure that will allow the database to connect to others with similar collections. This will include the ability to encode more nuanced and fluid gender representations, and for authors to correct their own entries. Further work will also include exploring topical co-occurrence, institutional bias in peer review, how institutions affect centrality in the co-authorship network, and how authors who move between institutions affect all these dynamics.

The Digital Humanities will never be perfect. It embodies the worst of its criticisms and the best of its ideals, sometimes simultaneously. We believe a more diverse community will help tip those scales in the right direction, and present this chapter in service of that belief.

Works Cited

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ADHO. “Our Mission,” n.d. http://adho.org/

“ADHO Announces New Steering Committee Chair.” ADHO, n.d. http://www.adho.org/announcements/2015/adho-announces-new-steering-committee-chair

“All Models Are Wrong.” Wikipedia, September 20, 2015. https://en.wikipedia.org/w/index.php?title=All_models_are_wrong&oldid=681908687

Blevins, Cameron, and Lincoln Mullen. “Jane, John … Leslie? A Historical Method for Algorithmic Gender Prediction.” Digital Humanities Quarterly 9, no. 3 (2015). http://www.digitalhumanities.org/dhq/vol/9/3/000223/000223.html

Boyles, Christina. “#WhatIfDH2016 Made Space for Scholars Who Are Interested in the Intersection(s) between DH and Race, Gender, and Sexuality Studies?” @clboyles, July 1, 2015. https://twitter.com/clboyles/statuses/616080151365861376

Burton, John W. Culture and the Human Body: An Anthropological Perspective. Prospect Heights, Ill.: Waveland Press, 2001.

“centerNet,” n.d. http://www.dhcenternet.org/

Cohen, Dan. “Catching the Good.” Dan Cohen, March 30, 2012. http://www.dancohen.org/2012/03/30/catching-the-good/

“Conditionally Accepted.” Inside Higher Education, n.d. https://www.insidehighered.com/users/conditionally-accepted

“Conference.” ADHO, n.d. http://adho.org/conference

“Congrats, You Have an All Male Panel!” n.d. http://allmalepanels.tumblr.com/

“DH Dark Sider (@DHDarkSider) | Twitter,” n.d. https://twitter.com/dhdarksider

“DH Enthusiast (@DH_Enthusiast) | Twitter,” n.d. https://twitter.com/DH_Enthusiast

“Disrupting the Digital Humanities.” Disrupting the Digital Humanities, n.d. http://www.disruptingdh.com/

Diversity in DH @ THATCamp. “Toward an Open Digital Humanities,” January 11, 2011. https://docs.google.com/document/d/1uPtB0xr793V27vHBmBZr87LY6Pe1BLxN-_DuJzqG-wU/edit?usp=sharing

Drucker, Johanna. “Humanistic Theory and Digital Scholarship.” In Debates in the Digital Humanities. University of Minnesota Press, 2012. http://dhdebates.gc.cuny.edu/debates/text/34

“Fight The Tower : Women of Color in Academia,” n.d. http://fighttower.com/

Ghilarducci, Teresa. “Why Women Over 50 Can’t Find Jobs.” Portside, n.d. http://portside.org/2016-01-18/why-women-over-50-can’t-find-jobs

“Global Outlook::Digital Humanities | Promoting Collaboration among Digital Humanities Researchers World-Wide,” n.d. http://www.globaloutlookdh.org/

Golumbia, David. “Right Reaction and the Digital Humanities.” Uncomputing, July 3, 2015. http://www.uncomputing.org/?p=1666

Howe, Tonya. “#whatifDH2016 Advocated for More Process-Oriented Liberal Arts Delegates?” Microblog. Twitter.com/howet, June 30, 2015. https://twitter.com/howet/statuses/616045260570030080

Hunt, Lynn. “Has the Battle Been Won? The Feminization of History.” Perspectives on History, May 1998. https://www.historians.org/publications-and-directories/perspectives-on-history/may-1998/has-the-battle-been-won-the-feminization-of-history

Lothian, Alexis. “THATCamp and Diversity in Digital Humanities.” Queer Geek Theory, n.d. http://www.queergeektheory.org/2011/01/thatcamp-and-diversity-in-digital-humanities/

Milen, Jeffrey F., Mitchell J. Chang, and Anthony Lising Antonio. “Making Diversity Work on Campus: A Research-Based Perspective.” Association American Colleges and Universities, 2005. http://citeseerx.ist.psu.edu/viewdoc/download?doi=

Morrison, Aimée. “#WhatIfDH2016 Had as Many Women on the Stage as in the Audience? http://www.scottbot.net/HIAL/?p=41355 #dh2015.” Microblog. @digiwonk, June 30, 2015. https://twitter.com/digiwonk/status/616042963093835776

Mullen, Lincoln. Ropensci/gender: Predict Gender from Names Using Historical Data, n.d. https://github.com/ropensci/gender

Nowviskie, Bethany. “Asking for It.” Bethany Nowviskie, February 8, 2014. http://nowviskie.org/2014/asking-for-it/

———. “Cats and Ships.” Bethany Nowviskie, November 2, 2012. http://nowviskie.org/2012/cats-and-ships/

Ohio State University. “Diversity Action Plan,” n.d. https://www.osu.edu/diversityplan/index.php

Perkins, Yvonne. “International Researchers Value Work of Australian Libraries and Archives.” Stumbling Through the Past, July 20, 2015. https://stumblingpast.wordpress.com/2015/07/21/intnl_researchers_value_oz_libraries_archives/

Peterson, Helen. “An Academic ‘Glass Cliff’? Exploring the Increase of Women in Swedish Higher Education Management.” Athens Journal of Education 1, no. 1 (February 2014): 32–44.

Pomerantz, Shauna, Rebecca Raby, and Andrea Stefanik. “Girls Run the World? Caught between Sexism and Postfeminism in the School.” *Gender & Society *27, no. 2 (April 1, 2013): 185-207. doi:10.1177/0891243212473199

Posner, Miriam. “What’s Next: The Radical, Unrealized Potential of Digital Humanities.” Miriam Posner’s Blog, July 27, 2015. http://miriamposner.com/blog/whats-next-the-radical-unrealized-potential-of-digital-humanities/

“Postcolonial Digital Humanities | Global Explorations of Race, Class, Gender, Sexuality and Disability within Cultures of Technology,” n.d. http://dhpoco.org/

Steiger, Kay. “The Pink Collar Workforce of Academia: Low-Paid Adjunct Faculty, Who Are Mostly Female, Have Started Unionizing for Better Pay—and Winning.” The Nation, July 11, 2013. http://www.thenation.com/article/academias-pink-collar-workforce/

Terras, Melissa. “Disciplined: Using Educational Studies to Analyse ‘Humanities Computing.’” Literary and Linguistic Computing 21, no. 2 (June 1, 2006): 229–46. doi:10.1093/llc/fql022

———. “Peering Inside the Big Tent: Digital Humanities and the Crisis of Inclusion.” Melissa Terras’ Blog, July 26, 2011. http://melissaterras.blogspot.com/2011/07/peering-inside-big-tent-digital.html

“THATCamp Southern California 2011 | The Humanities and Technology Camp,” n.d. http://socal2011.thatcamp.org/

“University of Venus.” Inside Higher Education, n.d. https://www.insidehighered.com/blogs/university-venus

U.S. Department of Education, National Center for Education Statistics. “Race/ethnicity of College Faculty,” 2015. https://nces.ed.gov/fastfacts/display.asp?id=61

Weingart, Scott. “Acceptances to Digital Humanities 2015 (part 4).” The Scottbot Irregular, June 28, 2015. http://www.scottbot.net/HIAL/?p=41375

———. “The Myth of Text Analytics and Unobtrusive Measurement.” The Scottbot Irregular, May 6, 2012. http://www.scottbot.net/HIAL/?p=16713

Wernimont, Jacqueline. “Build a Better Panel: Women in DH.” Jacqueline Wernimont. Accessed January 14, 2016. https://jwernimont.wordpress.com/2015/09/19/build-a-better-panel-women-in-dh/

———. “No More Excuses.” Jacqueline Wernimont, September 19, 2015. https://jwernimont.wordpress.com/2015/09/19/no-more-excuses/

Winslow, Sarah. “Gender Inequality and Time Allocations Among Academic Faculty.” Gender & Society 24, no. 6 (December 1, 2010): 769–93. doi:10.1177/0891243210386728.

Zafrin, Vika. “#WhatIfDH2016 Created Guidelines for Reviewers Explicitly Addressing Diversity & Providing Guidance on Reducing One’s Bias?” Microblog. @veek, June 30, 2015. https://twitter.com/veek/status/616041712163680256

———. “#WhatIfDH2016 Encouraged ALL Community Members to Reach out to Women & POC and Solicit Paper Submissions?” Microblog. @veek, June 30, 2015. https://twitter.com/veek/statuses/616041931949363200

———. “#WhatIfDH2016 Expanded ConfTool Pro to Record Reviewer Biases along Gender, Race, Country-of-Origin GDP Lines?” Microblog. @veek, June 30, 2015. https://twitter.com/veek/statuses/616043562799636481


  1. Each author contributed equally to the final piece; please disregard authorship order.
  2. See Melissa Terras, “Disciplined: Using Educational Studies to Analyse ‘Humanities Computing.’” Literary and Linguistic Computing 21, no. 2 (June 1, 2006): 229–46. doi:10.1093/llc/fql022. Terras takes a similar approach, analyzing Humanities Computing “through its community, research, curriculum, teaching programmes, and the message they deliver, either consciously or unconsciously, about the scope of the discipline.”
  3. The authors have created a browsable archive of #whatifDH2016 tweets.
  4. Of the 146 presentations at DH2011, two standout in relation to diversity in DH: “Is There Anybody out There? Discovering New DH Practitioners in other Countries” and “A Trip Around the World: Balancing Geographical Diversity in Academic Research Teams.”
  5. See “Disrupting DH,” http://www.disruptingdh.com/
  6. See Wernimont’s blog post, “No More Excuses” (September 2015) for more, as well as the Tumblr blog, “Congrats, you have an all male panel!”
  7. Miriam Posner offers a longer and more eloquent discussion of this in, “What’s Next: The Radical, Unrealized Potential of Digital Humanities.” Miriam Posner’s Blog. July 27, 2015. http://miriamposner.com/blog/whats-next-the-radical-unrealized-potential-of-digital-humanities/
  8. [Link to the full public dataset, forthcoming and will be made available by time of publication])
  9. We would like to acknowledge that race and ethnicity are frequently used interchangeably, though both are cultural constructs with their roots in Darwinian thought, colonialism, and imperialism. We retain these terms because they express cultural realities and lived experiences of oppression and bias, not because there is any scientific validity to their existence. For more on this tension, see John W.Burton, (2001), Culture and the Human Body: An Anthropological Perspective. Prospect Heights, Illinois: Waveland Press, 51-54.
  10. Weingart, S.B. & Eichmann, N. (2016). “What’s Under the Big Tent?: A Study of ADHO Conference Abstracts.” Manuscript submitted for publication.
  11. We used the process and script described in: Lincoln Mullen (2015). gender: Predict Gender from Names Using Historical Data. R package version (https://github.com/ropensci/gender) and Cameron Blevins and Lincoln Mullen, “Jane, John … Leslie? A Historical Method for Algorithmic Gender Prediction,” Digital Humanities Quarterly 9.3 (2015).
  12. For a breakdown of specific numbers of gender representation across all 96 topics from 2013-2015, see Weingart’s “Acceptances to Digital Humanities 2015 (part 4)”.
  13. While ADHO’s annual conference is usually the largest annual gathering of digital humanists, that place is constantly being vied for by the Digital Humanities Summer Institute in Victoria, Canada, which in 2013 boasted more attendees than DH2013 in Lincoln, Nebraska.

Acceptances to Digital Humanities 2015 (part 2)

Had enough yet? Too bad! Full-ahead into my analysis of DH2015, part of my 6,021-part series on DH conference submissions and acceptances. If you want more context, read the Acceptances to DH2015 part 1.


This post’s about the topical coverage of DH2015 in Australia. If you’re curious about how the landscape compares to previous years, see this post. You’ll see a lot of text, literature, and visualizations this year, as well as archives and digitisation projects. You won’t see a lot of presentations in other languages, or presentations focused on non-text sources. Gender studies is pretty much nonexistent. If you want to get accepted, submit pieces about visualization, text/data, literature, or archives. If you want to get rejected, submit pieces about pedagogy, games, knowledge representation, anthropology, or cultural studies.

Topical analysis

I’m sorry. This post is going to contain a lot of giant pictures, because I’m in the mountains of Australia and I’d much rather see beautiful vistas than create interactive visualizations in d3. Deal with it, dweebs. You’re just going to have to do a lot of scrolling down to see the next batch of text.

This year’s conference presents a mostly-unsurprising continuations of the status quo (see 2014’s and 2013’s topical landscapes). Figure 1, below, shows the top author-chosen topic words of DH2015, as a proportion of the total presentations at the conference. For example, an impressive quarter, 24%, of presentations at DH2015 are about “text analysis”. The authors were able to choose multiple topics for each presentation, which is why the percentages add up to way more than 100%.

Scroll down for the rest of the post.

Figure 1. Topical coverage of DH2015. Percent represents the % of presentations which authors have tagged with a certain topical keyword. Authors could tag multiple keywords per presentation.
Figure 1. Topical coverage of DH2015. Percent represents the % of presentations which authors have tagged with a certain topical keyword. Authors could tag multiple keywords per presentation.

Text analysis, visualization, literary studies, data mining, and archives take top billing. History’s a bit lower, but at least there’s more history than the abysmal showing at DH2013. Only a tenth of DH2015 presentations are about DH itself, which is maybe impressive given how much we talk about ourselves? (cf. this post)

As usual, gender studies representation is quite low (1%), as are foreign language presentations and presentations not centered around text. I won’t do a lot of interpretation this post, because it’d mostly be repeat of earlier years. At any rate, acceptance rate is a bit more interesting than coverage this time around. Figure 2 shows acceptance rates of each topic, ordered by volume. Figure 3 shows the same, sorted by acceptance rate.

The topics that appear most frequently at the conference are on the far left, and the red line shows the percent of submitted articles that will be presented at DH2015. The horizontal black line is the overall acceptance rate to the conference, 72%, just to show which topics are above or below average.

Figure 2. Acceptance rates of topics to DH2015, sorted by volume.
Figure 2. Acceptance rates of topics to DH2015, sorted by volume. Click to enlarge.
Figure 2. Acceptance rates of topics to DH2015, sorted by acceptance rate. Click to enlarge.
Figure 3. Acceptance rates of topics to DH2015, sorted by acceptance rate. Click to enlarge.

Notice that all the most well-represented topics at DH2015 have a higher-than-average acceptance rate, possibly suggesting a bit of path-dependence on the part of peer reviewers or editors. Otherwise, it could mean that, since a majority peer reviewers were also authors in the conference, and since (as I’ve shown) the majority of authors have a leaning toward text, lit, and visualization, it’s also what they’re likely to rate highly in peer review.

The first dips we see under the average acceptance rate is “Interdisciplinary Studies” and “Historical Studies” (☹), but the dips aren’t all that low, and we ought not to read too much into it without comparing it to earlier conferences. More significant are the low rates for “Cultural Studies”, and even more than that are the two categories on Teaching, Pedagogy, and Curriculum. Both categories’ acceptance rates are about 20% under the average, and although they’re obviously correlated with one another, the acceptance rates are similar to 2014 and 2013. In short, DH peer reviewers or editors are more unlikely to accept submissions on pedagogy than on most other topics, even though they sometimes represent a decent chunk of submissions.

Other low points worth pointing out are “Anthropology” (huh, no ideas there), “Games and Meaningful Play” (that one came as a surprise), and “Other” (can’t help you here). Beyond that, the submission counts are too low to read any meaningful interpretations into the data. The Game Studies dip is curious, and isn’t reflected in earlier conferences, so it could just be noise for 2015. The low acceptance rates in Anthropology are consistent 2013-2015, and it’d be worth looking more into that.

Topical Co-Occurrence, 2013-2015

Figure 4, below, shows how topics appear together on submissions to DH2013, DH2014, and DH2015. Technically this has nothing to do with acceptances, and little to do with this year specifically, but the visualization should provide a little context to the above analysis. Topics connect to one another if they appear on a submission together, and the line connecting them gets thicker the more connections two topics share.

Figure 4. Topical co-occurrence, 2013-2015. Click to enlarge.
Figure 4. Topical co-occurrence, 2013-2015. Click to enlarge.

Although the “Interdisciplinary Collaboration” topic has a low acceptance rate, it understandably ties the network together; other topics that play a similar role are “Visualization”, “Programming”, “Content Analysis”, “Archives”, and “Digitisation”. All unsurprising for a conference where people come together around method and material. In fact, this reinforces our “DH identity” along those lines, at least insofar as it is represented by the annual ADHO conference.

There’s a lot to unpack in this visualization, and I may go into more detail in the next post. For now, I’ve got a date with the Blue Mountains west of Sydney.

Culturomics 2: The Search for More Money

“God willing, we’ll all meet again in Spaceballs 2: The Search for More Money.” -Mel Brooks, Spaceballs, 1987

A long time ago in a galaxy far, far away (2012 CE, Indiana), I wrote a few blog posts explaining that, when writing history, it might be good to talk to historians (1,2,3). They were popular posts for the Irregular, and inspired by Mel Brooks’ recent interest in making Spaceballs 2,  I figured it was time for a sequel of my own. You know, for all the money this blog pulls in. 1


Two teams recently published very similar articles, attempting cultural comparison via a study of historical figures in different-language editions of Wikipedia. The first, by Gloor et al., is for a conference next week in Japan, and frames itself as cultural anthropology through the study of leadership networks. The second, by Eom et al. and just published in PLoS ONE, explores cross-cultural influence through historical figures who span different language editions of Wikipedia.

Before reading the reviews, keep in mind I’m not commenting on method or scientific contribution—just historical soundness. This often doesn’t align with the original authors’ intents, which is fine. My argument isn’t that these pieces fail at their goals (science is, after all, iterative), but that they would be markedly improved by adhering to the same standards of historical rigor as they adhere to in their home disciplines, which they could accomplish easily by collaborating with a historian.

The road goes both ways. If historians don’t want physicists and statisticians bulldozing through history, we ought to be open to collaborating with those who don’t have a firm grasp on modern historiography, but who nevertheless have passion, interest, and complementary skills. If the point is understanding people better, by whatever means relevant, we need to do it together.

Cultural Anthropology

“Cultural Anthropology Through the Lens of Wikipedia – A Comparison of Historical Leadership Networks in the English, Chinese, Japanese and German Wikipedia” by Gloor et al. analyzes “the historical networks of the World’s leaders since the beginning of written history, comparing them in the four different Wikipedias.”

Their method is simple (simple isn’t bad!): take each “people page” in Wikipedia, and create a network of people based on who else is linked within that page. For example, if Wikipedia’s article on Mozart links to Beethoven, a connection is drawn between them. Connections are only drawn between people whose lives overlap; for example, the Mozart (1756-1791) Wikipedia page also links to Chopin (1810-1849), but because they did not live concurrently, no connection is drawn.

Figure 1 from http://arxiv.org/ftp/arxiv/papers/1502/1502.05256.pdf
Figure 1 from Gloor et al

A separate network is created for four different language editions of Wikipedia (English, Chinese, Japanese, German), because biographies in each edition are rarely exact translations, and often different people will be prominent within the same biography across all four languages. PageRank was calculated for all the people in the resulting networks, to get a sense of who the most central figures are according to the Wikipedia link structure.

“Who are the most important people of all times?” the authors ask, to which their data provides them an answer. 2 In China and Japan, they show, only warriors and politicians make the cut, whereas religious leaders, artists, and scientists made more of a mark on Germany and the English-speaking world. Historians and biographers wind up central too, given how often their names appear on the pages of famous contemporaries on whom they wrote.

Diversity is also a marked difference: 80% of the “top 50” people for the English Wikipedia were themselves non-English, whereas only 4% of the top people from the Chinese Wikipedia are not Chinese. The authors conclude that “probing the historical perspective of many different language-specific Wikipedias gives an X-ray view deep into the historical foundations of cultural understanding of different countries.”

Figure 3
Figure 3 from Gloor et al

Small quibbles aside (e.g. their data include the year 0 BC, which doesn’t exist), the big issue here is the ease with which they claim these are the “most important” actors in history, and that these datasets provides an “X-ray” into the language cultures that produced them. This betrays the same naïve assumptions that plague much of culturomics research: that you can uncritically analyze convenient datasets as a proxy for analyzing larger cultural trends.

You can in fact analyze convenient datasets as a proxy for larger cultural trends, you just need some cultural awareness and a critical perspective.

In this case, several layers of assumptions are open for questioning, including:

  • Is the PageRank algorithm a good proxy for historical importance? (The answer turns out to be yes in some situations, but probably not this one.)
  • Is the link structure in Wikipedia a good proxy for historical dependency? (No, although it’s probably a decent proxy for current cultural popularity of historical figures, which would have been a better framing for this article. Better yet, these data can be used to explore the many well-known and unknown biases that pervade Wikipedia.)
  • Can differences across language editions of Wikipedia be explained by any factors besides cultural differences? (Yes. For example, editors of the German-language Wikipedia may be less likely to write a German biography if one already exists in English, given that ≈64% of Germany speaks English.)

These and other questions, unexplored in the article, make it difficult to take at face value that this study can reveal important historical actors or compare cultural norms of importance. Which is a shame, because simple datasets and approaches like this one can produce culturally and scientifically valid results that wind up being incredibly important. And the scholars working on the project are top-notch, it’s just that they don’t have all the necessary domain expertise to explore their data and questions.

Cultural Interactions

The great thing about PLoS is the quality control on its publications: there isn’t much. As long as primary research is presented, the methods are sound, the data are open, and the experiment is well-documented, you’re in.

It’s a great model: all reasonable work by reasonable people is published, and history decides whether an article is worthy of merit. Contrast this against the current model, where (let’s face it) everything gets published eventually anyway, it’s just a question of how many journal submissions and rounds of peer review you’re willing to sit through. Research sits for years waiting to be published, subject to the whims of random reviewers and editors who may hold long grudges, when it could be out there the minute it’s done, open to critique and improvement, and available to anyone to draw inspiration or to learn from someone’s mistakes.

“Interactions of Cultures and Top People of Wikipedia from Ranking of 24 Language Editions” by Eom et al. is a perfect example of this model. Do I consider it a paragon of cultural research? Obviously not, if I’m reviewing it here. Am I happy the authors published it, respectful of their attempt, and willing to use it to push forward our mutual goal of soundly-researched cultural understanding? Absolutely.

Eom et al.’s piece, similar to that of Gloor et al. above, uses links between Wikipedia people pages to rank historical figures and to make cultural comparisons. The article explores 24 different language editions of Wikipedia, and goes one step further, using the data to explore intercultural influence. Importantly, given that this is a journal-length article and not a paper from a conference proceeding like Gloor et al.’s, extra space and thought was clearly put into the cultural biases of Wikipedia across languages. That said, neither of the articles reviewed here include any authors who identify themselves as historians or cultural experts.

This study collected data a bit differently from the last. Instead of a network connecting only those people whose lives overlapped, this network connected all pages within a single-language edition of Wikipedia, based only on links between articles. 3 They then ranked pages using a number of metrics, including but not limited to PageRank, and only then automatically extracted people to find who was the most prominent in each dataset.

In short, every Wikipedia article is linked in a network and ranked, after which all articles are culled except those about people. The authors explain: “On the basis of this data set we analyze spatial, temporal, and gender skewness in Wikipedia by analyzing birth place, birth date, and gender of the top ranked historical figures in Wikipedia.” By birth place, they mean the country currently occupying the location where a historical figure was born, such that Aristophanes, born in Byzantium 2,300 years ago, is considered Turkish for the purpose of this dataset. The authors note this can lead to cultural misattributions ≈3.5% of the time (e.g. Kant is categorized as Russian, having been born in a city now in Russian territory). They do not, however, call attention to the mutability of culture over time.

Table 2 from Eom et al.
Table 2 from Eom et al.

It is unsurprising, though comforting, to note that the fairly different approach to measuring prominence yields many of the same top-10 results as Gloor’s piece: Shakespeare, Napoleon, Bush, Jesus, etc.

Analysis of the dataset resulted in several worthy conclusions:

  • Many of the “top” figures across all language editions hail from Western Europe or the U.S.
  • Language editions bias local heroes (half of top figures in Wikipedia English are from the U.S. and U.K.; half of those in Wikipedia Hindi are from India) and regional heroes (Among Wikipedia Korean, many top figures are Chinese).
  • Top figures are distributed throughout time in a pattern you’d expect given global population growth, excepting periods representing foundations of modern cultures (religions, politics, and so forth).
  • The farther you go back in time, the less likely a top figure from a certain edition of Wikipedia is to have been born in that language’s region. That is, modern prominent figures in Wikipedia English are from the U.S. or the U.K., but the earlier you go, the less likely top figures are born in English-speaking regions. (I’d question this a bit, given cultural movement and mutability, but it’s still a result worth noting).
  • Women are consistently underrepresented in every measure and edition. More recent top people are more likely to be women than those from earlier years.
Figure 4 from Eom et al.
Figure 4 from Eom et al.

The article goes on to describe methods and results for tracking cultural influence, but this blog post is already tediously long, so I’ll leave that section out of this review.

There are many methodological limitations to their approach, but the authors are quick to notice and point them out. They mention that Linnaeus ranks so highly because “he laid the foundations for the modern biological naming scheme so that plenty of articles about animals, insects and plants point to the Wikipedia article about him.” This research was clearly approached with a critical eye toward methodology.

Eom et al. do not fare as well historically as methodologically; opportunities to frame claims more carefully, or to ask different sorts of questions, are overlooked. I mentioned earlier that the research assumes historical cultural consistency, but cultural currents intersect languages and geography at odd angles.

The fact that Wikipedia English draws significantly from other locations the earlier you look should come as no surprise. But, it’s unlikely English Wikipedians are simply looking to more historically diverse subjects; rather, the locus of some cultural current (Christianity, mathematics, political philosophy) has likely moved from one geographic region to another. This should be easy to test with their dataset by looking at geographic clustering and spread in any given year. It’d be nice to see them move in that direction next.

I do appreciate that they tried to validate their method by comparing their “top people” to lists other historians have put together. Unfortunately, the only non-Wikipedia-based comparison they make is to a book written by an astrophysicist and white separatist with no historical training: “To assess the alignment of our ranking with previous work by historians, we compare it with [Michael H.] Hart’s list of the top 100 people who, according to him, most influenced human history.”

Top People

Both articles claim that an algorithm analyzing Wikipedia networks can compare cultures and discover the most important historical actors, though neither define what they mean by “important.” The claim rests on the notion that Wikipedia’s grand scale and scope smooths out enough authorial bias that analyses of Wikipedia can inductively lead to discoveries about Culture and History.

And critically approached, that notion is more plausible than historians might admit. These two reviewed articles, however, don’t bring that critique to the table. 4 In truth, the dataset and analysis lets us look through a remarkably clear mirror into the cultures that created Wikipedia, the heroes they make, and the roots to which they feel most connected.

Usefully for historians, there is likely much overlap between history and the picture Wikipedia paints of it, but the nature of that overlap needs to be understood before we can use Wikipedia to aid our understanding of the past. Without that understanding, boldly inductive claims about History and Culture risk reinforcing the same systemic biases which we’ve slowly been trying to fix. I’m absolutely certain the authors don’t believe that only 5% of history’s most important figures were women, but the framing of the articles do nothing to dispel readers of this notion.

Eom et al. themselves admit “[i]t is very difficult to describe history in an objective way,” which I imagine is a sentiment we can all get behind. They may find an easier path forward in the company of some historians.


  1. net income: -$120/year.
  2. If you’re curious, the 10 most important people in the English-speaking world, in order, are George W. Bush, ol’ Willy Shakespeare, Sidney Lee, Jesus, Charles II, Aristotle, Napoleon, Muhammad, Charlemagne, and Plutarch.
  3. Download their data here.
  4. Actually the Eom et al. article does raise useful critiques, but mentioning them without addressing them doesn’t really help matters.

Networks Demystified 9: Bimodal Networks

What do you think, is a year long enough to wait between Networks Demystified posts? I don’t think so, which is why it’s been a year and a month. Welcome back! A recent twitter back-and-forth culminated in a request for a discussion of “bimodal networks”, and my Networks Demystified series seemed like a perfect place for just such a discussion.

What’s a bimodal network, you ask? (Go on, ask aloud at your desk. Nobody will look at you funny, this is the age of Siri!) A bimodal network is one which connects two varieties of things. It’s also called a bipartite, 2-partite, or 2-mode network. A network of authors connected to the papers they write is bimodal, as are networks of books to topics, and people to organizations they are affiliated with.

A bimodal network.
A bimodal network.

This is a bimodal network which connects people and the clubs they belong to. Alice is a member of the Network Club and the We Love History Society, Bob‘s in the Network Club and the No Adults Allowed Club, and Carol‘s in the No Adults Allowed Club.

If this makes no sense, read my earlier Networks Demystified posts (the first two posts), or the our Historian’s Macroscope chapter, for a primer on networks. If it does make sense, excellent! The rest of this post will hopefully take you out of your comfort zone, but remain understandable to someone who doesn’t speak math.

k-partite Networks & Projections

Bimodal networks are part of a larger class of k-partite networks. Unipartite/unimodal networks have only one type of node (remember, nodes are the stuff being connected by the edges), bipartite/bimodal networks have two types of nodes, tripartite/trimodal networks have three types of node, and so on to infinity.

The most common networks you’ll see being researched are unipartite. Who follows whom on Twitter? Who’s writing to whom in early modern Europe? What articles cite which other articles? All are examples of unipartite networks. It’s important to realize this isn’t necessarily determined by the dataset, but by the researcher doing the studying. For example, you can use the same organization affiliation dataset to create a unipartite network of who is in a club with whom, or a bipartite network of which person is affiliated with each organization.

The same dataset used to create a unipartite (left) and a bipartite (right) network.
The same dataset used to create a unipartite (left) and a bipartite (right) network.

The above illustration shows the same dataset used to create a unimodal and a bimodal network. The process of turning a pre-existing bimodal network into a unimodal network is called a bimodal projection. This process collapses one set of nodes into edges connecting the other set. In this case, because Alice and Bob are both members of the Network Club, the Network Club collapses into becoming an edge between those two people. The No Adults Allowed Club collapses into an edge between Bob and Carol. Because only Alice is a member of the We Love History Society, it does not collapse into an edge connecting any people.

You can also collapse the network in the opposite direction, connecting organizations who share people. No Adults Allowed and Network Club would share an edge (Bob), as would Network Club and We Love History Society (Alice).

Why Bimodal Networks?

If the same dataset can be described with unimodal networks, which are less complex, why go to bi-, tri-, or multimodal? The answer to that is in your research question: different network representations suit different questions better.

Collaboration is a hot topic in bibliometrics. Who collaborates with whom? Why? Do your collaborators affect your future collaborations? Co-authorship networks are well-suited to some of these questions, since they directly connect collaborators who author a piece together. This is a unimodal network: I wrote The Historian’s Macroscope with Shawn Graham and Ian Milligan, so we draw an edge connecting each of us together.

Some of the more focused questions of collaboration, however, require a more nuanced view of the data. Let’s say you want to know how individual instances of collaboration affect individual research patterns going forward. In this case, you want to know more than the fact that I’ve co-authored two pieces with Shawn and Ian, and they’ve co-authored three pieces together.

For this added nuance, we can draw an edge from each of us to The Historian’s Macroscope (rather than each-other), then another set edges to the piece we co-authored in The Programming Historian, and a last set of edges going from Shawn and Ian to the piece they wrote in the Journal of Digital Humanities. That’s three people nodes and three publication nodes.

Scott, Ian, and Shawn's co-authorship network
Scott, Ian, and Shawn’s co-authorship network

Why Not Bimodal Networks?

Humanities data are often a rich array of node types: people, places, things, ideas, all connected to each other via a complex network. The trade-off is, the more complex and multimodal your dataset, the less you can reasonably do with it. This is one of the fundamental tensions between computational and traditional humanities. More categories lead to a richer understanding of the diversity of human experience, but are incredibly unhelpful when you want to count things.

Consider two pie-charts showing the religious makeup of the United States. The first chart groups together religions that fall under a similar umbrella, and the second does not. That is, the first chart groups religions like Calvinists and Lutherans together into the same pie slice (Protestants), and the second splits them into separate slices. The second, more complex chart obviously presents a richer picture of religious diversity in the United States, but it’s also significantly more difficult to read. It might trick you into thinking there are more Catholics than Protestants in the country, due to how the pie is split.

The same is true in network analysis. By creating a dataset with a hundred varieties of nodes, you lose your ability to see a bigger picture through meaningful aggregations.

Surely, you’re thinking, bimodal networks, with only two categories, should be fine! Wellllll, yes and no. You don’t bump into the same aggregation problem you do with very multimodal networks; instead, you bump into technical and mathematical issues. These issues are why I often warn non-technical researchers away from bimodal networks in research. They’re not theoretically unsound, they’re just difficult to work with properly unless you know what changes when you’re working with these complex networks.

The following section will discuss a few network metrics you may be familiar with, and what they mean for bimodal networks.

Network Metrics and Bimodality

The easiest thing to measure in a network is a node’s degree centrality. You’ll recall this is a measurement of how many edges are attached to a node, which gives a rough proxy for this concept we’ve come to call network “centrality“. It means different things depending on your data and your question: the most important or well-connected person in your social network; the point in the U.S. electrical grid which is most vulnerable to attack; the book that shares the most concepts with other books (the encyclopedia?); the city that the most traders pass through to get to their destination. These are all highly “central” in the networks they occupy.

A network with each node labeled with its degree centrality.
A network with each node labeled with its degree centrality, via Wikipedia.

Degree centrality is the easiest such proxy to compute: how many connections does a node have? The idea is that nodes that are more highly connected are more central. The assumption only goes so far, and it’s easy to come up with nodes that are central that do not have a  high degree, as with the network below.

The blue node is highly central, but only has a degree centrality of 3. [via]
The blue node is highly central, but only has a degree centrality of 3. [via]
That’s the thing with these metrics: if you know how they work, you know which networks they apply well to, and which they do not. If what you mean by “centrality” is “has more friends”, and we’re talking about a Facebook network, then degree centrality is a perfect metric for the job.

If what you mean is “an important stop for river trade”, and we’re talking about 12th century Russia, then degree centrality sucks. The below is an illustration of such a network by Pitts (1978):

Russian river trade routes. Numbers/nodes are cities, and edges are rivers between them.
Russian river trade routes. Numbers/nodes are cities, and edges are rivers between them.

Moscow is number 35, and pretty clearly the most central according to the above criteria (you’ll likely pass through it to reach other destinations). But it only has a degree centrality of four! Node 9 also has a degree centrality of four, but clearly doesn’t play as important a structural role as Moscow in this network.

We already see that depending on your question, your definitions, and your dataset, specific metrics will either be useful or not. Metrics may change meanings entirely from one network to the next – for example, looking at bimodal rather than unimodal networks.

Consider what degree centrality means for the Alice, Bob, and Carol’s bimodal affiliation network above, where each is associated with a different set of clubs. Calculate the degree centralities in your head (hint: if you can’t, you haven’t learned what degree centrality means yet. Try again.).

Alice and Bob have a degree of 2, and Carol has a degree of 1. Is this saying anything about how central each is to the network? Not at all. Compare this to the unimodal projection, and you’ll see Bob is clearly the only structurally central actor in the network. In a bimodal network, degree centrality is nothing more than a count of affiliations with the other half of the network. It is much less likely to tell you something structurally useful than if you were looking at a unimodal network.

Consider another common measurement: clustering coefficient. You’ll recall that a node’s local clustering coefficient is the extent to which its neighbors are neighbors to one another. If all my Facebook friends know each other, I have a high clustering coefficient; if none of them know each other, I have a low clustering coefficient. If all of a power plant’s neighbors directly connect to one another, it has a high clustering coefficient, and if they don’t, it has a low clustering coefficient.

Clustering coefficient, from largest to smallest. [via]
Clustering coefficient, from largest to smallest. [via]
This measurement winds up being important for all sorts of reasons, but one way to interpret its meaning is as a proxy for the extent to which a node bridges diverse communities, the extent to which it is an important broker. In the 17th century, Henry Oldenburg was an important broker between disparate scholarly communities, in that he corresponded with people all across Europe, many of whom would never meet one another. The fact that they’d never meet is represented by the local clustering coefficient. It’s low, so we know his neighbors were unlikely to be neighbors of one another.

You can get creative (and network scientists often are) with what this metric means in the context of your own dataset. As long as you know how the algorithm works (taking the fraction of neighbors who are neighbors to one another), and the structural assumptions underlying your dataset, you can argue why clustering coefficient is a useful proxy for answering whatever question you’re asking.

Your argument may be pretty good, like if you say clustering coefficient is a decent (but not the best) proxy for revealing nodes that broker between disparate sections of a unimodal social network. Or your argument may be bad, like if you say clustering coefficient is a good proxy for organizational cohesion on the bimodal Alice, Bob, and Carol affiliation network above.

A thorough glance at the network, and a realization of our earlier definition of clustering coefficient (taking the fraction of neighbors who are neighbors to one another), should reveal why this is a bad justification. Alice’s clustering coefficient is zero. As is Bob’s. As is the Network Club’s. Every node has a clustering coefficient of zero, because no node’s neighbors connect to each other. That’s just the nature of bimodal networks: they connect across, rather than between, modes. Alice can never connect directly with Bob, and the Network Club can never connect directly with the We Love History Society.

Bob’s neighbors (the organizations) can never be neighbors with each other. There will never be a clustering coefficient as we defined it.

In short, the simplest definition of clustering coefficient doesn’t work on bimodal networks. It’s obvious if you know how your network works, and how clustering coefficient is calculated, but if you don’t think about it before you press the easy “clustering coefficient” button in Gephi, you’ll be lead astray.

Gephi doesn’t know if your network is bimodal or unimodal or ∞modal. Gephi doesn’t care. Gephi just does what you tell it to. You want Gephi to tell you the degree centralities in a bimodal network? Here ya go! You want it to give you the local clustering coefficients of nodes in a bimodal network? Voila! Everything still works as though these metrics would produce meaningful, sensible results.

But they won’t be meaningful on your network. You need to be your own network’s sanity check, and not rely on software to tell you something’s a bad idea. Think about your network, think about your algorithm, and try to work through what an algorithm means in the context of your data.

Using Bimodal Networks

This doesn’t mean you should stop using bimodal networks. Most of the easy network software out there comes with algorithms made for unimodal networks, but other algorithms exist and are available for more complex networks. Very occasionally, but by no means always, you can project your bimodal network to a unimodal network, as described above, and run your unimodal algorithms on that new network projection.

There are a number of times when this doesn’t work well. At 2,300 words, this tutorial is already too long, so I’ll leave thinking through why as an exercise for the reader. It’s less complicated than you’d expect, if you have a pen and paper and know how fractions work.

The better solution, usually, is to use an algorithm meant for bi- or multimodal networks. Tore Opsahl has put together a good primer on the subject with regard to clustering coefficient (slightly mathy, but you can get through it with ample use of Wikipedia). He argues that projection isn’t an optimal solution, but gives a simple algorithm for a finding bimodal clustering coefficients, and directions to do so in R. Essentially the algorithm extends the visibility of the clustering coefficient, asking whether a node’s neighbors 2 hops away can reach the others via 2 hops as well. Put another way, I don’t want to know what clubs Bob belongs to, but rather whether Alice and Carol can also connect to one another through a club.

It’s a bit difficult to write without the use of formulae, but looking at the bimodal network and thinking about what clustering coefficient ought to mean should get you on the right track.

Bimodal networks aren’t an unsolved problem. If you search Google Scholar for bimodal, bipartite, and 2-mode networks, you’ll discover all sorts of clever methods for analyzing bimodal networks, including some great introductory texts by Borgatti and Everett.

The issue is there aren’t easy solutions through platforms like Gephi, and that’s probably on us as Digital Humanists.  I’ve found that DHers are much more likely to have bi- or multimodal datasets than most network researchers. If we want to be able to analyze them easily, we need to start developing our own plugins to Gephi, or our own tools, to do so. Push-button solutions are great if you know what’s happening when you push the button.

So let this be an addendum to my previous warnings against using bimodal networks: by all means, use them, but make sure you really think about the algorithms and your data, and what any given metric might imply when run on your network specifically. There are all sorts of free resources online you can find by googling your favorite algorithm. Use them.

For more information, read up on specific algorithms, methods, interpretations, etc. for two-mode networks from Tore Opsahl.


The moral role of DH in a data-driven world

This is the transcript from my closing keynote address at the 2014 DH Forum in Lawrence, Kansas. It’s the result of my conflicted feelings on the recent Facebook emotional contagion controversy, and despite my earlier tweets, I conclude the study was important and valuable specifically because it was so controversial.

For the non-Digital-Humanities (DH) crowd, a quick glossary. Distant Reading is our new term for reading lots of books at once using computational assistance; Close Reading is the traditional term for reading one thing extremely minutely, exhaustively.

Networked Society

Distant reading is a powerful thing, an important force in the digital humanities. But so is close reading. Over the next 45 minutes, I’ll argue that distant reading occludes as much as it reveals, resulting in significant ethical breaches in our digital world. Network analysis and the humanities offers us a way out, a way to bridge personal stories with the big picture, and to bring a much-needed ethical eye to the modern world.

Today, by zooming in and out, from the distant to the close, I will outline how networks shape our world and our lives, and what we in this room can do to set a path going forward.

Let’s begin locally.

1. Pale Blue Dot

Pale Blue Dot

You are here. That’s a picture of Kansas, from four billion miles away.

In February 1990, after years of campaigning, Carl Sagan convinced NASA to turn the Voyager 1 spacecraft around to take a self-portrait of our home, the Earth. This is the most distant reading of humanity that has ever been produced.

I’d like to begin my keynote with Carl Sagan’s own words, his own distant reading of humanity. I’ll spare you my attempt at the accent:

Consider again that dot. That’s here. That’s home. That’s us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every ‘superstar,’ every ‘supreme leader,’ every saint and sinner in the history of our species lived there – on a mote of dust suspended in a sunbeam.

What a lonely picture Carl Sagan paints. We live and die in isolation, alone in a vast cosmic darkness.

I don’t like this picture. From too great a distance, everything looks the same. Every great work of art, every bomb, every life is reduced to a single point. And our collective human experience loses all definition. If we want to know what makes us, us, we must move a little closer.

2. Black Rock City

Black Rock City

We’ve zoomed into Black Rock City, more popularly known as Burning Man, a city of 70,000 people that exists for only a week in a Nevada desert, before disappearing back into the sand until the following year. Here life is apparent; the empty desert is juxtaposed against a network of camps and cars and avenues, forming a circle with some ritualistic structure at its center.

The success of Burning Man is contingent on collaboration and coordination; on the careful allocation of resources like water to keep its inhabitants safe; on the explicit planning of organizers to keep the city from descending into chaos year after year.

And the creation of order from chaos, the apparent reversal of entropy, is an essential feature of life. Organisms and societies function through the careful coordination and balance of their constituent parts. As these parts interact, patterns and behaviors emerge which take on a life of their own.

3. Complex Systems

Thus cells combine to form organs, organs to form animals, and animals to form flocks.

We call these networks of interactions complex systems, and we study complex systems using network analysis. Network analysis as a methodology takes as a given that nothing can be properly understood in total isolation. Carl Sagan’s pale blue dot, though poignant and beautiful, is too lonely and too distant to reveal anything of we creatures who inhabit it.

We are not alone.

4. Connecting the Dots

When looking outward rather than inward, we find we are surrounded on all sides by a hundred billion galaxies each with a hundred billion stars. And for as long as we can remember, when we’ve stared up into the night sky, we’ve connected the dots. We’ve drawn networks in the stars in order to make them feel more like us, more familiar, more comprehensible.

Nothing exists in isolation. We use networks to make sense of our place in the vast complex system that contains protons and trees and countries and galaxies.The beauty of network analysis is its ability to transcend differences in scale, such that there is a place for you and for me, and our pieces interact with other pieces to construct the society we occupy. Networks allow us to see the forest and the trees, to give definition to the microcosms and macrocosms which describe the world around us.

5. Networked World

Networks open up the world. Over the past four hundred years, the reach of the West extended to the globe, overtaking trade routes created first by eastern conquerors. From these explorations, we produced new medicines and technologies. Concomitant with this expansion came unfathomable genocide and a slave trade that spanned many continents and far too many centuries.

Despite the efforts of the Western World, it could only keep the effects of globalization to itself for so long. Roads can be traversed in either direction, and the network created by Western explorers, businesses, slave traders, and militaries eventually undermined or superseded the Western centers of power. In short order, the African slave trade in the Americas led to a rich exchange of knowledge of plants and medicines between Native Americans and Africans.

In Southern and Southeast Asia, trade routes set up by the Dutch East India Company unintentionally helped bolster economies and trade routes within Asia. Captains with the company, seeking extra profits, would illicitly trade goods between Asian cities. This created more tightly-knit internal cultural and economic networks than had existed before, and contributed to a global economy well beyond the reach of the Dutch East India Company.

In the 1960s, the U.S. military began funding what would later become the Internet, a global communication network which could transfer messages at unfathomable speeds. The infrastructure provided by this network would eventually become a tool for control and surveillance by governments around the world, as well as a distribution mechanism for fuel that could topple governments in the Middle East or spread state secrets in the United States. The very pervasiveness which makes the internet particularly effective in government surveillance is also what makes it especially dangerous to governments through sites like WikiLeaks.

In short, science and technology lay the groundwork for our networked world, and these networks can be great instruments of creation, or terrible conduits of destruction.

6. Macro Scale

So here we are, occupying this tiny mote of dust suspended in a sunbeam. In the grand scheme of things, how does any of this really matter? When we see ourselves from so great a distance, it’s as difficult to be enthralled by the Sistine Chapel as it is to be disgusted by the havoc we wreak upon our neighbors.

7. Meso Scale

But networks let us zoom in, they let us keep the global system in mind while examining the parts. Here, once again, we see Kansas, quite a bit closer than before. We see how we are situated in a national and international set of interconnections. These connections come in every form, from physical transportation to electronic communication. From this scale, wars and national borders are visible. Over time, cultural migration patterns and economic exchange become apparent. This scale shows us the networks which surround and are constructed by us.


And this is the scale which is seen by the NSA and the CIA, by Facebook and Google, by social scientists and internet engineers. Close enough to provide meaningful aggregations, but far enough that individual lives remain private and difficult to discern. This scale teaches us how epidemics spread, how minorities interact, how likely some city might be a target for the next big terrorist attack.

From here, though, it’s impossible to see the hundred hundred towns whose factories have closed down, leaving many unable to feed their families. It’s difficult to see the small but endless inequalities that leave women and minorities systematically underappreciated and exploited.

8. Micro Scale


We can zoom in further still, Lawrence Kansas at a few hundred feet, and if we watch closely we can spot traffic patterns, couples holding hands, how the seasons affect people’s activities. This scale is better at betraying the features of communities, rather than societies.

But for tech companies, governments, and media distributors, it’s all-too-easy to miss the trees for the forest. When they look at the networks of our lives, they do so in aggregate. Indeed, privacy standards dictate that the individual be suppressed in favor of the community, of the statistical average that can deliver the right sort of advertisement to the right sort of customer, without ever learning the personal details of that customer.

This strange mix of individual personalization and impersonal aggregation drives quite a bit of the modern world. Carefully micro-targeted campaigning is credited with President Barack Obama’s recent presidential victories, driven by a hundred data scientists in an office in Chicago in lieu of thousands of door-to-door canvassers. Three hundred million individually crafted advertisements without ever having to look a voter in the face.

9. Target

And this mix of impersonal and individual is how Target makes its way into the wombs of its shoppers. We saw this play out a few years ago when a furious father went to complain to a Target store manager. Why, he asked the manager, is my high school daughter getting ads for maternity products in the mail? After returning home, the father spoke to his daughter to discover she was, indeed pregnant.  How did this happen? How’d Target know?

 It turns out, Target uses credit cards, phone numbers, and e-mail addresses to give every customer a unique ID. Target discovered a list of about 25 products that, if purchased in a certain sequence by a single customer, is pretty indicative of a customer’s pregnancy. What’s more, the date of the purchased products can pretty accurately predict the date the baby would be delivered. Unscented lotion, magnesium, cotton balls, and washcloths are all on that list.

When Target’s systems learns one of its customers is probably pregnant, it does its best to profit from that pregnancy, sending appropriately timed coupons for diapers and bottles. This backfired, creeping out customers and invading their privacy, as with the angry father who didn’t know his daughter was pregnant. To remedy the situation, rather than ending the personalized advertising, Target began interspersing ads for unrelated products with personalized products in order to trick the customer into thinking the ads were random or general. All the while, a good portion of the coupons in the book were still targeted directly towards those customers.

One Target executive told a New York Times reporter:

We found out that as long as a pregnant woman thinks she hasn’t been spied on, she’ll use the coupons. She just assumes that everyone else on her block got the same mailer for diapers and cribs. As long as we don’t spook her, it works.

The scheme did work, raising Target’s profits by billions of dollars by subtly matching their customers with coupons they were likely to use. 

10. Presidential Elections

Political campaigns have also enjoyed the successes of microtargeting. President Bush’s 2004 campaign pioneered this technique, targeting socially conservative Democratic voters in key states in order to either convince them not to vote, or to push them over the line to vote Republican. This strategy is credited with increasing the pro-Bush African American vote in Ohio from 9% in 2000 to 16% in 2004, appealing to anti-gay marriage sentiments and other conservative values.

The strategy is also celebrated for President Obama’s 2008 and especially 2012 campaigns, where his staff maintained a connected and thorough database of a large portion of American voters. They knew, for instance, that people who drink Dr. Pepper, watch the Golf Channel, drive a Land Rover, and eat at Cracker Barrel are both very likely to vote, and very unlikely to vote Democratic. These insights lead to the right political ads targeted exactly at those they were most likely to sway.

So what do these examples have to do with networks? These examples utilize, after all, the same sorts of statistical tools that have always been available to us, only with a bit more data and power to target individuals thrown in the mix.

It turns out that networks are the next logical step in the process of micronudging, the mass targeting of individuals based on their personal lives in order to influence them toward some specific action.

In 2010, a Facebook study, piggy-backing on social networks, influenced about 340,000 additional people to vote in the US mid-term elections. A team of social scientists at UCSD experimented on 61 million facebook users in order to test the influence of social networks on political action.

A portion of American Facebook users who logged in on election day were given the ability to press an “I voted” button, which shared the fact that they voted with their friends. Facebook then presented users with pictures of their friends who voted, and it turned out that these messages increased voter turnout by about 0.4%. Further, those who saw that close friends had voted were more likely to go out and vote than those who had seen that distant friends voted. The study was framed as “voting contagion” – how well does the action of voting spread among close friends?

This large increase in voter turnout was prompted by a single message on Facebook spread among a relatively small subset of its users. Imagine that, instead of a research question, the study was driven by a particular political campaign. Or, instead, imagine that Facebook itself had some political agenda – it’s not too absurd a notion to imagine.

11. Blackout


In fact, on January 18, 2012, a great portion of the social web rallied under a single political agenda. An internet blackout. In protest of two proposed U.S. congressional laws that threatened freedom of speech on the Web, SOPA and PIPA, 115,000 websites voluntarily blacked out their homepages, replacing them with pleas to petition congress to stop the a bills.

Reddit, Wikipedia, Google, Mozilla, Twitter, Flickr, and others asked their users to petition Congress, and it worked. Over 3 million people emailed their congressional representatives directly, another million sent a pre-written message to Congress from the Electronic Frontier Foundation, a Google petition reached 4.5 million signatures, and lawmakers ultimated collected the names of over 14 million people who protested the bills. Unsurprisingly, the bills were never put up to vote.

These techniques are increasingly being leveraged to influence consumers and voters into acting in-line with whatever campaign is at hand. Social networks and the social web, especially, are becoming tools for advertisers and politicians.

12a. Facebook and Social Guessing

In 2010, Tim Tangherlini invited a few dozen computer scientists, social scientists, and humanists to a two-week intensive NEH-funded summer workshop on network analysis for the humanities. Math camp for nerds, we called it. The environment was electric with potential projects and collaborations, and I’d argue it was this workshop that really brought network analysis to the humanities in force.

During the course of the workshop, one speaker sticks out in my memory: a data scientist at Facebook. He reached the podium, like so many did during those two weeks, and described the amazing feats they were able to perform using basic linguistic and network analyses. We can accurately predict your gender and race, he claimed, regardless of whether you’ve told us. We can learn your political leanings, your sexuality, your favorite band.

Much like most talks from computer scientists at the event, the purpose was to show off the power of large-scale network analysis when applied to people, and didn’t focus much on its application. The speaker did note, however, that they used these measurements to effectively advertise to their users; electronics vendors could advertise to wealthy 20-somethings; politicians could target impoverished African Americans in key swing states.

It was a few throw-away lines in the presentation, but the force of the ensuing questions revolved around those specifically. How can you do this without any sort of IRB oversight? What about the ethics of all this? The Facebook scientist’s responses were telling: we’re not doing research, we’re just running a business.

And of course, Facebook isn’t the only business doing this. The Twitter analytics dashboard allows you to see your male-to-female follower ratio, even though users are never asked their gender. Gender is guessed based on features of language and interactions, and they claim around 90% accuracy.

Google, when it targets ads towards you as a user, makes some predictions based on your search activity. Google guessed, without my telling it, that I am a 25-34 year old male who speaks English and is interested in, among other things, Air Travel, Physics, Comics, Outdoors, and Books. Pretty spot-on.

12b. Facebook and Emotional Contagion

And, as we saw with the Facebook voting study, social web services are not merely capable of learning about you; they are capable of influencing your actions. Recently, this ethical question has pushed its way into the public eye in the form of another Facebook study, this one about “emotional contagion.”

A team of researchers and Facebook data scientists collaborated to learn the extent to which emotions spread through a social network. They selectively filtered the messages seen by about 700,000 Facebook users, making sure that some users only saw emotionally positive posts by their friends, and others only saw emotionally negative posts. After some time passed, they showed that users who were presented with positive posts tended to post positive updates, and those presented with negative posts tended to post negative updates.

The study stirred up quite the controversy, and for a number of reasons. I’ll unpack a few of them:

First of all, there were worries about the ethics of consent. How could Facebook do an emotional study of 700,000 users without getting their consent, first? The EULA that everyone clicks through when signing up for Facebook only has one line saying that data may be used for research purposes, and even that line didn’t appear until several months after the study occurred.

A related issue raised was one of IRB approval: how could the editors at PNAS have approved the study given that the study took place under Facebook’s watch, without an external Institutional Review Board? Indeed, the university-affiliated researchers did not need to get approval, because the data were gathered before they ever touched the study. The counter-argument was that, well, Facebook conducts these sorts of studies all the time for the purposes of testing advertisements or interface changes, as does every other company, so what’s the problem?

A third issue discussed was one of repercussions: if the study showed that Facebook could genuinely influence people’s emotions, did anyone in the study physically harm themselves as a result of being shown a primarily negative newsfeed? Should Facebook be allowed to wield this kind of influence? Should they be required to disclose such information to their users?

The controversy spread far and wide, though I believe for the wrong reasons, which I’ll explain shortly. Social commentators decried the lack of consent, arguing that PNAS shouldn’t have published the paper without proper IRB approval. On the other side, social scientists argued the Facebook backlash was antiscience and would cause more harm than good. Both sides made valid points.

One well-known social scientist noted that the Age of Exploration, when scientists finally started exploring the further reaches of the Americas and Africa, was attacked by poets and philosophers and intellectuals as being dangerous and unethical. But, he argued, did not that exploration bring us new wonders? Miracle medicines and great insights about the world and our place in it?

I call bullshit. You’d be hard-pressed to find a period more rife with slavery and genocide and other horrible breaches of human decency than that Age of Exploration. We can’t sacrifice human decency in the name of progress. On the flip-side, though, we can’t sacrifice progress for the tiniest fears of misconduct. We must proceed with due diligence to ethics without being crippled by inefficacy.

But this is all a red herring. The issue here isn’t whether and to what extent these activities are ethical science, but to what extent they are ethical period, and if they aren’t, what we should do about it. We can’t have one set of ethical standards for researchers, and another for businesses, but that’s what many of the arguments in recent months have boiled down to. Essentially, it was argued, Facebook does this all the time. It’s something called A/B testing: they make changes for some users and not others, and depending on how the users react, they change the site accordingly. It’s standard practice in web development.

13. An FDA/FTC for Data?

It is surprising, then, that the crux of the anger revolved around the published research. Not that Facebook shouldn’t do A/B testing, but that researchers shouldn’t be allowed to publish on it. This seems to be the exact opposite of what should be happening: if indeed every major web company practices these methods already, then scholarly research on how such practices can sway emotions or voting practices are exactly what we need. We must bring these practices to light, in ways the public can understand, and decide as a society whether they cross ethical boundaries. A similar discussion occurred during the early decades of the 20th century, when the FDA and FTC were formed, in part, to prevent false advertising of snake oils and foods and other products.

We are at the cusp of a new era. The mix of big data, social networks, media companies, content creators, government surveillance, corporate advertising, and ubiquitous computing is a perfect storm for intense influence both subtle and far-reaching. Algorithmic nudging has the power to sell products, win elections, topple governments, and oppress a people, depending on how it is wielded and by whom. We have seen this work from the bottom-up, in Occupy Wallstreet, the Revolutions in the Middle East, and the ALS Ice-Bucket Challenge, and from the top-down in recent presidential campaigns, Facebook studies, and coordinated efforts to preserve net neutrality. And these have been works of non-experts: people new to this technology, scrambling in the dark to develop the methods as they are deployed. As we begin to learn more about network-based control and influence, these examples will multiply in number and audacity.

14. Surveillance

And this story leaves out one of the most major players of all: government. When Edward Snowden leaked the details of classified NSA surveillance program, the world was shocked at the government’s interest in and capacity for omniscience. Data scientists, on the other hand, were mostly surprised that people didn’t realize this was happening. If the technology is there, you can bet it will be used.

And so here, in the NSA’s $1.5 billion dollar data center in Utah, are the private phone calls, parking receipts, emails, and Google searches of millions of American citizens. It stores a few exabytes of our data, over a billion gigabytes and roughly equivalent to a hundred thousand times the size of the library of congress. More than enough space, really.

The humanities have played some role in this complex machine. During the Cold War, the U.S. government covertly supported artists and authors to create cultural works which would spread American influence abroad and improve American sentiment at home.

Today the landscape looks a bit different. For the last few years DARPA, the research branch of the U.S. Department of Defense, has been funding research and hosting conferences in what they call “Narrative Networks.” Computer scientists, statisticians, linguists, folklorists, and literary scholars have come together to discuss how ideas spread and, possibly, how to inject certain sentiments within specific communities. It’s a bit like the science of memes, or of propaganda.

Beyond this initiative, DARPA funds have gone toward several humanities-supported projects to develop actionable plans for the U.S. military. One project, for example, creates as-complete-as-possible simulations of cultures overseas, which can model how groups might react to the dropping of bombs or the spread of propaganda. These models can be used to aid in the decision-making processes of officers making life-and-death decisions on behalf of troops, enemies, and foreign citizens. Unsurprisingly, these initiatives, as well as NSA surveillance at home, all rely heavily on network analysis.

In fact, when the news broke on the captures of Osama bin Laden and Saddam Hussein, and how they were discovered via network analysis, some of my family called me after reading the newspapers claiming “we finally understand what you do!” This wasn’t the reaction I was hoping for.

In short, the world is changing incredibly rapidly, in large part driven by the availability of data, network science and statistics, and the ever-increasing role of technology in our lives. Are these corporate, political, and grassroots efforts overstepping their bounds? We honestly don’t know. We are only beginning to have sustained, public discussions about the new role of technology in society, and the public rarely has enough access to information to make informed decisions. Meanwhile, media and web companies may be forgiven for overstepping ethical boundaries, as our culture hasn’t quite gotten around to drawing those boundaries yet.

15. The Humanities’ Place

This is where the humanities come in – not because we have some monopoly on ethics (goodness knows the way we treat our adjuncts is proof we do not) – but because we are uniquely suited to the small scale. To close reading. While what often sets the digital humanities apart from its analog counterpart is the distant reading, the macroanalysis, what sets us all apart is our unwillingness to stray too far from the source. We intersperse the distant with the close, attempting to reintroduce the individual into the aggregate.

Network analysis, not coincidentally, is particularly suited to this endeavor. While recent efforts in sociophysics have stressed the importance of the grand scale, let us not forget that network theory was built on the tiniest of pieces in psychology and sociology, used as a tool to explore individuals and their personal relationships. In the intervening years, all manner of methods have been created to bridge macro and micro, from Granovetter’s theory of weak ties to Milgram’s of Small Worlds, and the way in which people navigate the networks they find themselves in. Networks work at every scale, situating the macro against the meso against the micro.

But we find ourselves in a world that does not adequately utilize this feature of networks, and is increasingly making decisions based on convenience and money and politics and power without taking the human factor into consideration. And it’s not particularly surprising: it’s easy, in the world of exabytes of data, to lose the trees for the forest.

This is not a humanities problem. It is not a network scientist problem. It is not a question of the ethics of research, but of the ethics of everyday life. Everyone is a network scientist. From Twitter users to newscasters, the boundary between people who consume and people who are aware of and influence the global social network is blurring, and we need to deal with that. We must collaborate with industries, governments, and publics to become ethical stewards of this networked world we find ourselves in.

16. Big and Small

Your challenge, as researchers on the forefront of network analysis and the humanities, is to tie the very distant to the very close. To do the research and outreach that is needed to make companies, governments, and the public aware of how perturbations of the great mobile that is our society affect each individual piece.

We have a number of routes available to us, in this respect. The first is in basic research: the sort that got those Facebook study authors in such hot water. We need to learn and communicate the ways in which pervasive surveillance and algorithmic influence can affect people’s lives and steer societies.

A second path towards influencing an international discussion is in the development of new methods that highlight the place of the individual in the larger network. We seem to have a critical mass of humanists collaborating with or becoming computer scientists, and this presents a perfect opportunity to create algorithms which highlight a node’s uniqueness, rather than its similarity.

Another step to take is one of public engagement that extends beyond the academy, and takes place online, in newspapers or essays, in interviews, in the creation of tools or museum exhibits. The MIT Media Lab, for example, created a tool after the Snowden leaks that allows users to download their email metadata to reveal the networks they form. The tool was a fantastic example of a way to show the public exactly what “simply metadata” can reveal about a person, and its viral spread was a testament to its effectiveness. Mike Widner of Stanford called for exactly this sort of engagement from digital humanists a few years ago, and it is remarkable how little that call has been heeded.

Pedagogy is a fourth option. While people cry that the humanities are dying, every student in the country will have taken many humanities-oriented courses by the time they graduate. These courses, ostensibly, teach them about what it means to be human in our complex world. Alongside the history, the literature, the art, let’s teach what it means to be part of a global network, constantly contributing to and being affected by its shadow.

With luck, reconnecting the big with the small will hasten a national discussion of the ethical norms of big data and network analysis. This could result in new government regulating agencies, ethical standards for media companies, or changes in ways people interact with and behave on the social web.

17. Going Forward

When you zoom out far enough, everything looks the same. Occupy Wall Street; Ferguson Riots; the ALS Ice Bucket Challenge; the Iranian Revolution. They’re all just grassroots contagion effects across a social network. Rhetorically, presenting everything as a massive network is the same as photographing the earth from four billion miles: beautiful, sobering, and homogenizing. I challenge you to compare network visualizations of Ferguson Tweets with the ALS Ice Bucket Challenge, and see if you can make out any differences. I couldn’t. We need to zoom in to make meaning.

The challenge of network analysis in the humanities is to bring our close reading perspectives to the distant view, so media companies and governments don’t see everyone as just some statistic, some statistical blip floating on this pale blue dot.

I will end as I began, with a quote from Carl Sagan, reflecting on a time gone by but every bit as relevant for the moment we face today:

I know that science and technology are not just cornucopias pouring good deeds out into the world. Scientists not only conceived nuclear weapons; they also took political leaders by the lapels, arguing that their nation — whichever it happened to be — had to have one first. … There’s a reason people are nervous about science and technology. And so the image of the mad scientist haunts our world—from Dr. Faust to Dr. Frankenstein to Dr. Strangelove to the white-coated loonies of Saturday morning children’s television. (All this doesn’t inspire budding scientists.) But there’s no way back. We can’t just conclude that science puts too much power into the hands of morally feeble technologists or corrupt, power-crazed politicians and decide to get rid of it. Advances in medicine and agriculture have saved more lives than have been lost in all the wars in history. Advances in transportation, communication, and entertainment have transformed the world. The sword of science is double-edged. Rather, its awesome power forces on all of us, including politicians, a new responsibility — more attention to the long-term consequences of technology, a global and transgenerational perspective, an incentive to avoid easy appeals to nationalism and chauvinism. Mistakes are becoming too expensive.

Let us take Carl Sagan’s advice to heart. Amidst cries from commentators on the irrelevance of the humanities, it seems there is a large void which we are both well-suited and morally bound to fill. This is the path forward.

Thank you.

Thanks to Nickoal Eichmann and Elijah Meeks for editing & inspiration.

Networks Demystified 8: When Networks are Inappropriate

A few hundred years ago, I promised to talk about when not to use networks, or when networks are used improperly. With The Historian’s Macroscope in the works, I’ve decided to finally start answering that question, and this Networks Demystified is my first attempt at doing so. If you’re new here, this is part of an annoyingly long series (1 network basics, 2 degree, 3 power laws, 4 co-citation analysis, 5 communities and PageRank, 6 this space left intentionally blank, 7 co-citation analysis II). I’ve issued a lot of vague words of caution without doing a great job of explaining them, so here is the first substantive part of that explanation.

Networks are great. They allow you to do things like understand the role of postal routes in the circulation of knowledge in early modern Europe, or of the spread of the black death in the middle ages, or the diminishing importance of family ties in later Chinese governments. They’re versatile, useful, and pretty easy in today’s software environment. And they’re sexy, to boot. I mean, have you seen this visualization of curved lines connecting U.S. cities? I don’t even know what it’s supposed to represent, but it sure looks pretty enough to fund!

A really pretty network visualization. [via]
A really pretty network visualization. [via]

So what could possibly dissuade you from using a specific network, or the concept of networks in general? A lot of things, it turns out, and even a big subset of things that belong only to historians. I won’t cover all of them here, but I will mention a few big ones.

An Issue of Memory Loss

Okay, I lied about not knowing what the above network visualization represents. It turns out it’s a network of U.S. air travel pathways; if a plane goes from one city to another, an edge connects the two cities together. Pretty straightforward. And pretty useful, too, if you want to model something like the spread of an epidemic. You can easily see how someone with the newest designer virus flying into Texas might infect half-a-dozen people at the airport, who would in turn travel to other airports, and quickly infect most parts of the country with major airports. Transportation networks like this are often used by the CDC for just such a purpose, to determine what areas might need assistance/quarantine/etc.

The problem is that, although such a network might be useful for epidemiology, it’s not terribly useful for other seemingly intuitive questions. Take migration patterns: you want to know how people travel. I’ll give you another flight map that’s a bit easier to read.

Flight patterns over U.S. [via]
Flight patterns over U.S. [via]
The first thing people tend to do when getting their hands on a new juicy network dataset is to throw it into their favorite software suite (say, Gephi) and run a bunch of analyses on it. Of those, people really like things like PageRank or Betweenness Centrality, which can give the researcher a sense of important nodes in the network based on how central they are; in this case, how many flights have to go through a particular city in order to get where they eventually intend to go.

Let’s look at Las Vegas. By anyone’s estimation it’s pretty important; well-connected to cities both near and far, and pretty central in the southwest. If I want to go from Denver to Los Angeles and a direct flight isn’t possible, Las Vegas seems to be the way to go. If we also had road networks, train networks, cell-phone networks, email networks, and so forth all overlaid on top of this one, looking at how cities interact with each other, we might be able to begin to extrapolate other information like how rumors spread, or where important trade hubs are.

Here’s the problem: network structures are deceitful. They come with a few basic assumptions that are very helpful in certain areas, but extremely dangerous in others, and they are the reason why you shouldn’t analyze a network without thinking through what you’re implying by fitting your data to the standard network model. In this case, the assumption to watch out for is what’s known as a lack of memory.

The basic networks you learn about, with nodes and edges and maybe some attributes, embed no information on how those networks are generally traversed. They have no memories. For the purposes of disease tracking, this is just fine: all epidemiologists generally need to know is whether two people might accidentally happen to find themselves in the same place at the same time, and where they individually go from there. The structure of the network is enough to track the spread of a disease.

For tracking how people move, or how information spreads, or where goods travel, structure alone is rarely enough. It turns out that Las Vegas is basically a sink, not a hub, in the world of airline travel. People who travel there tend to stay for a few days before traveling back home. The fact that it happens to sit between Colorado and California is meaningless, because people tend not to go through Vegas to get from one to another, even though individually, people from both states travel there with some frequency.

If the network had a memory to it, if it somehow knew not just that a lot of flights tended to go between Colorado and Vegas and between LA and Vegas, but also that the people who went to Vegas returned to where they came from, then you’d be able to see that Vegas isn’t the same sort of hub that, say, Atlanta is. Travel involving Vegas tends to be to or from, rather than through. In truth, all cities have their own unique profiles, and some may be extremely central to the network without necessarily being centrally important in questions about that network (like human travel patterns).

The same might be true of letter-writing networks in early modern Europe, my research of choice. We often find people cropping up as extremely central, connecting very important figures whom we did not previously realize were connected, only to find out that later that, well, it’s not exactly what we thought. This new central figure, we’ll call him John Smith, happened to be the cousin of an important statesman, the neighbor of a famous philosopher, and the once-business-partner of some lawyer. None of the three ever communicated with John about any of the others, and though he was structurally central on the network, he was no-one of any historical note. A lack of memory in the network that information didn’t flow through John, only to or from him, means my centrality measurements can often be far from the mark.

It turns out that in letter-writing networks, people have separate spheres: they tend to write about family with family members, their governmental posts with other officials, and their philosophies with other philosophers. The overarching structure we see obscures partitions between communities that seem otherwise closely-knit. When researching with networks, especially going from the visualization to the analysis phase, it’s important to keep in mind what the algorithms you use do, and what assumptions they and your network structure embed in the evidence they provide.

Sometimes, the only network you have might be the wrong network for the job. I have a lot of peers (me included) who try to understand the intellectual landscape of early modern Europe using correspondence networks, but this is a poor proxy indeed for what we are trying to understand. Because of the spurious structural connections, like that of our illustrious John Smith, early modern networks give us a sense of unity that might not have been present at the time.

And because we’re only looking on one axis (letters), we get an inflated sense of the importance of spatial distance in early modern intellectual networks. Best friends never wrote to each other; they lived in the same city and drank in the same pubs; they could just meet on a sunny afternoon if they had anything important to say. Distant letters were important, but our networks obscure the equally important local scholarly communities.

If there’s a moral to the story, it’s that there are many networks that can connect the same group of nodes, and many questions that can be asked of any given network, but before trying to use networks to study history, you should be careful to make sure the questions match the network.


As humanists asking humanistic questions, our networks tend to be more complex than the sort originally explored in network science. We don’t just have people connected to people or websites to websites, we’ve got people connected to institutions to authored works to ideas to whatever else, and we want to know how they all fit together. Cue the multimodal network, or a network that includes several types of nodes (people, books, places, etc.).

I’m going to pick on Elijah Meeks’ map of of the DH2011 conference, because I know he didn’t actually use it to commit the sins I’m going to discuss. His network connected participants in the conference with their institutional affiliations and the submissions they worked on together.

Part of Elijah Meeks' map of DH2011. [via]
Part of Elijah Meeks’ map of DH2011. [via]
From a humanistic perspective, and especially from a Latourian one, these multimodal networks make a lot of sense. There are obviously complex relationships between many varieties of entities, and the promise of networks is to help us understand these relationships. The issue here, however, is that many of the most common metrics you’ll find in tools like Gephi were not created for multimodal networks, and many of the basic assumptions of network research need to be re-aligned in light of this type of use.

Let’s take the local clustering coefficient as an example. It’s a measurement often used to see if a particular node spans several communities, and it’s calculated by seeing how many of a node’s connections are connected to each other. More concretely, if all of my friends were friends with one another, I would have a high local clustering coefficient; if, however, my friends tended not to be friends with one another, and I was the only person in common between them, my local clustering coefficient would be quite low. I’d be the bridge holding the disparate communities together.

If you study the DH2011 network, the problem should become clear: local clustering coefficient is meaningless in multimodal networks. If people are connected to institutions and conference submissions, but not to one another, then everyone must have the same local clustering coefficient: zero. Nobody’s immediate connections are connected to each other, by definition in this type of network.

Local clustering coefficient is an extreme example, but many of the common metrics break down or mean something different when multiple node-types are introduced to the network. People are coming up with ways to handle these networks, but the methods haven’t yet made their way into popular software. Yet another reason that a researcher should have a sense of how the algorithms work and how they might interact with their own data.

No Network Zone

The previous examples pointed out when networks might be used inappropriately, but there are also times when there is no appropriate use for a network. This isn’t so much based on data (most data can become a network if you torture them enough), but on research questions. Networks seem to occupy a similar place in the humanities as power laws do in computational social sciences: they tend to crop up everywhere regardless of whether they actually add anything informative. I’m not in the business of calling out poor uses of networks, but a good rule of thumb on whether you should include a network in your poster or paper is to ask yourself whether its inclusion adds anything that your narrative doesn’t.

Alternatively, it’s also not uncommon to see over-explanations of networks, especially network visualizations. A narrative description isn’t always the best tool for conveying information to an audience; just as you wouldn’t want to see a table of temperatures over time when a simple line chart would do, you don’t want a two-page description of communities in a network when a simple visualization would do.

This post is a bit less concise and purposeful than the others in this series, but stay-tuned for a revamped (and hopefully better) version to show up in The Historian’s Macroscope. In the meantime, as always, comments are welcome and loved and will confer good luck on all those who write them.

Submissions to Digital Humanities 2014

Submissions for the 2014 Digital Humanities conference just closed. It’ll be in Switzerland this time around, which unfortunately means I won’t be able make it, but I’ll be eagerly following along from afar. Like last year, reviewers are allowed to preview the submitted abstracts. Also like last year, I’m going to be a reviewer, which means I’ll have the opportunity to revisit the submissions to DH2013 to see how the submissions differed this time around. No doubt when the reviews are in and the accepted articles are revealed, I’ll also revisit my analysis of DH conference acceptances.

To start with, the conference organizers received a record number of submissions this year: 589. Last year’s Nebraska conference only received 348 submissions. The general scope of the submissions haven’t changed much; authors were still supposed to tag their submissions using a controlled vocabulary of 95 topics, and were also allowed to submit keywords of their own making. Like last year, authors could submit long papers, short papers, panels, or posters, but unlike last year, multilingual submissions were encouraged (English, French, German, Italian, or Spanish). [edit: Bethany Nowviskie, patient awesome person that she is, has noticed yet another mistake I’ve made in this series of posts. Apparently last year they also welcomed multilingual submissions, and it is standard practice.]

Digital Humanities is known for its collaborative nature, and not much has changed in that respect between 2013 and 2014 (Figure 1). Submissions had, on average, between two and three authors, with 60% of submissions in both years having at least two authors. This year, a few fewer papers have single authors, and a few more have two authors, but the difference is too small to be attributable to anything but noise.

Figure 1. Number of authors per paper.
Figure 1. Number of authors per paper.

The distribution of topics being written about has changed mildly, though rarely in extreme ways. Any changes visible should also be taken with a grain of salt, because a trend over a single year is hardly statistically robust to small changes, say, in the location of the event.

The grey bars in Figure 2 show what percentage of DH2014 submissions are tagged with a certain topic, and the red dotted outlines show what the percentages were in 2013. The upward trends to note this year are text analysis, historical studies, cultural studies, semantic analysis, and corpora and corpus activities. Text analysis was tagged to 15% of submissions in 2013 and is now tagged to 20% of submissions, or one out of every five. Corpus analysis similarly bumped from 9% to 13%. Clearly this is an important pillar of modern DH.

Figure 2. Topics from DH2014 ordered by the percent of submissions which fall in that category. The dotted lines represent the percentage from DH2013.
Figure 2. Topics from DH2014 ordered by the percent of submissions which fall in that category. The red dotted outlines represent the percentage from DH2013.

I’ve pointed out before that History is secondary compared to Literary Studies in DH (although Ted Underwood has convincingly argued, using Ben Schmidt’s data, that the numbers may merely be due to fewer people studying history). This year, however, historical studies nearly doubled in presence, from 10% to 17%. I haven’t yet collected enough years of DH conference data to see if this is a trend in the discipline at large, or more of a difference between European and North American DH. Semantic analysis jumped from 1% to 7% of the submissions, cultural studies went from 10% to 14%, and literary studies stayed roughly equivalent. Visualization, one of the hottest topics of DH2013, has become even hotter in 2014 (14% to 16%).

The most visible drops in coverage came in pedagogy, scholarly editions, user interfaces, and research involving social media and the web. At DH2013, submissions on pedagogy had a surprisingly low acceptance rate, which combined the drop in pedagogy submissions this year (11% to 8% in “Digital Humanities – Pedagogy and Curriculum” and 7% to 4% in “Teaching and Pedagogy”) might suggest a general decline in interest in the DH world in pedagogy. “Scholarly Editing” went from 11% to 7% of the submissions, and “Interface and User Experience Design” from 13% to 8%, which is yet more evidence for the lack of research going into the creation of scholarly editions compared to several years ago. The most surprising drops for me were those in “Internet / World Wide Web” (12% to 8%) and “Social Media” (8.5% to 5%), which I would have guessed would be growing rather than shrinking.

The last thing I’ll cover in this post is the author-chosen keywords. While authors needed to tag their submissions from a list of 95 controlled vocabulary words, they were also encouraged to tag their entries with keywords they could choose themselves. In all they chose nearly 1,700 keywords to describe their 589 submissions. In last year’s analysis of these keywords, I showed that visualization seemed to be the glue that held the DH world together; whether discussing TEI, history, network analysis, or archiving, all the disparate communities seemed to share visualization as a primary method. The 2014 keyword map (Figure 3) reveals the same trend: visualization is squarely in the middle. In this graph, two keywords are linked if they appear together on the same submission, thus creating a network of keywords as they co-occur with one another. Words appear bigger when they span communities.

Figure 3. Co-occurrence of DH2014 author-submitted keywords.
Figure 3. Co-occurrence of DH2014 author-submitted keywords.

Despite the multilingual conference, the large component of the graph is still English. We can see some fairly predictable patterns: TEI is coupled quite closely with XML; collaboration is another keyword that binds the community together, as is (obviously) “Digital Humanities.” Linguistic and literature are tightly coupled, much moreso than, say, linguistic and history. It appears the distant reading of poetry is becoming popular, which I’d guess is a relatively new phenomena, although I haven’t gone back and checked.

This work has been supported by an ACH microgrant to analyze DH conferences and the trends of DH through them, so keep an eye out for more of these posts forthcoming that look through the last 15 years. Though I usually share all my data, I’ll be keeping these to myself, as the submitters to the conference did so under an expectation of privacy if their proposals were not accepted.

[edit: there was some interest on twitter last night for a raw frequency of keywords. Because keywords are author-chosen and I’m trying to maintain some privacy on the data, I’m only going to list those keywords used at least twice. Here you go (Figure 4)!]

Figure 4. Keywords used in DH2014 submissions ordered by frequency.
Figure 4. Keywords used in DH2014 submissions ordered by frequency.

Historians, Doctors, and their Absence

[Note: sorry for the lack of polish on the post compared to others. This was hastily written before a day of international travel. Take it with however many grains of salt seem appropriate under the circumstances.]

[Author’s note two: Whoops! Never included the link to the article. Here it is.]

Every once in a while, 1 a group of exceedingly clever mathematicians and physicists decide to do something exceedingly clever on something that has nothing to do with math or physics. This particular research project has to do with the 14th Century Black Death, resulting in such claims as the small-world network effect is a completely modern phenomenon, and “most social exchange among humans before the modern era took place via face-to-face interaction.”

The article itself is really cool. And really clever! I didn’t think of it, and I’m angry at myself for not thinking of it. They look at the empirical evidence of the spread of disease in the late middle ages, and note that the pattern of disease spread looked shockingly different than patterns of disease spread today. Epidemiologists have long known that today’s patterns of disease propagation are dependent on social networks, and so it’s not a huge leap to say that if earlier diseases spread differently, their networks must have been different too.

Don’t get me wrong, that’s really fantastic. I wish more people (read: me) would make observations like this. It’s the sort of observation that allows historians to infer facts about the past with reasonable certainty given tiny amounts of evidence. The problem is, the team had neither any doctors, nor any historians of the late middle ages, and it turned an otherwise great paper into a set of questionable conclusions.

Small world networks have a formal mathematical definition, which (essentially) states that no matter how big the population of the world gets, everyone is within a few degrees of separation from you. Everyone’s an acquaintance of an acquaintance of an acquaintance of an acquaintance. This non-intuitive fact is what drives the insane speeds of modern diseases; today, an epidemic can spread from Australia to every state in the U.S. in a matter of days. Due to this, disease spread maps are weirdly patchy, based more around how people travel than geographic features.

Patchy h5n1 outbreak map.
Patchy h5n1 outbreak map.

The map of the spread of black death in the 14th century looked very different. Instead of these patches, the disease appeared to spread in very deliberate waves, at a rate of about 2km/day.

Spread of the plague, via the original article.
Spread of the plague, via the original article.

How to reconcile these two maps? The solution, according to the network scientists, was to create a model of people interacting and spreading diseases across various distances and types of networks. Using the models, they show that in order to generate these wave patterns of disease spread, the physical contact network cannot be small world. From this, because they make the (uncited) claimed that physical contact networks had to be a subset of social contact networks (entirely ignoring, say, correspondence), the 14th century did not have small world social networks.

There’s a lot to unpack here. First, their model does not take into account the fact that people, y’know, die after they get the plague. Their model assumes infected have enough time and impetus to travel to get the disease as far as they could after becoming contagious. In the discussion, the authors do realize this is a stretch, but suggest that because, people could if they so choose travel 40km/day, and the black death only spread 2km/day, this is not sufficient to explain the waves.

I am no plague historian, nor a doctor, but a brief trip on the google suggests that black death symptoms could manifest in hours, and a swift death comes only days after. It is, I think, unlikely that people would or could be traveling great distances after symptoms began to show.

More important to note, however, are the assumptions the authors make about social ties in the middle ages. They assume a social tie must be a physical one; they assume social ties are connected with mobility; and they assume social ties are constantly maintained. This is a bit before my period of research, but only a hundred years later (still before the period the authors claim could have sustained small world networks), but any early modern historian could tell you that communication was asynchronous and travel was ordered and infrequent.

Surprisingly, I actually believe the authors’ conclusions: that by the strict mathematical definition of small world networks, the “pre-modern” world might not have that feature. I do think distance and asynchronous communication prevented an entirely global 6-degree effect. That said, the assumptions they make about what a social tie is are entirely modern, which means their conclusion is essentially inevitable: historical figures did not maintain modern-style social connections, and thus metrics based on those types of connections should not apply. Taken in the social context of the Europe in the late middle ages, however, I think the authors would find that the salient features of small world networks (short average path length and high clustering) exist in that world as well.

A second problem, and the reason I agree with the authors that there was not a global small world in the late 14th century, is because “global” is not an appropriate axis on which to measure “pre-modern” social networks. Today, we can reasonably say we all belong to a global population; at that point in time, before trade routes from Europe to the New World and because of other geographical and technological barriers, the world should instead have been seen as a set of smaller, overlapping populations. My guess is that, for more reasonable definitions of populations for the time period, small world properties would continue to hold in this time period.


  1. Every day? Every two days?

Networks Demystified 7: Doing Co-Citation Analyses

So this is awkward. I’ve published Networks Demystified 7: Doing Citation Analyses before Networks Demystified 6: Organizing Your Twitter Lists. What depraved lunatic would do such a thing? The kind of depraved lunatic that is teaching this very subject twice in the next two weeks: deal with it, you’ll get your twitterstructions soon, internet. In the meantime, enjoy the irregular nature of the scottbot irregular.

And this is part 7 of my increasingly inaccurately named trilogy of instructional network analysis posts (1 network basics, 2 degree, 3 power laws, 4 co-citation analysis, 5 communities and PageRank, 6 this space left intentionally blank). I’m covering how to actually do citation analyses, so it’s a continuation of part 4 of the series. If you want to know what citation analysis is and why to do it, as well as a laundry list of previous examples in the humanities and social sciences, go read that post. If you want to just finally be able to analyze citations, like you’ve always dreamed, read on. 1

You’re going to need two things for these instructions: The Sci2 Tool, and either a subscription to the multi-gazillion dollar ISI Web of Science database, or this sample dataset. The Sci2 (Science of Science) Tool is a fairly buggy program (I’m allowed to say that because I’m kinda off-and-on the development team and I wrote half the user manual) that specializes in ingesting data of various formats and turning them into networks for analysis and visualization. It’s a good tool to use before you run to Gephi to make your networks pretty, and has a growing list of available plugins. If you already have the Sci2 Tool, download it again, because there’s a new version and it doesn’t auto-update. Go download it. It’s 80mb, I’ll wait.

Once you’ve registered for (not my decision, don’t blame me!) and downloaded the tool, extract the zip folder wherever you want, no install necessary. The first thing to do is increase the amount of memory available to the program, assuming you have at least a gig of RAM on your computer. We’re going to be doing some intensive analysis, so you’ll need the extra space. Edit sci2.ini; on Windows, that can be done by right-clicking on the file and selecting ‘edit’; on Mac, I dunno, elbow-click and press ‘CHANGO’? I have no idea how things work on Macs. (Sorry Mac-folk! We’ve actually documented in more detail how to increase memory – on both Windows and Mac – here)

Once editing the file, you’ll see a nigh-unintelligble string of letters and numbers that end in “-Xmx350m”. Assuming you have more than a gig of RAM on your computer, change that to “-Xmx1000m”. If you don’t have more RAM, really, you should go get some. Or use only a quarter of the dataset provided. Save it and close the text editor.

Run Sci2.exe We didn’t pay Microsoft to register the app, so if you’re on Windows, you may get a OHMYGODWARNING sign. Click ‘run anyway’ and safely let my team’s software hack your computer and use it to send pictures of cats to famous network scientists. (No, we’ll be good, promise). You’ll get to a screen remarkably like Figure 7. Leave it open, and if you’re at an institution that pays ISI Web of Science the big bucks, head there now. Otherwise ignore this and just download the sample dataset.

Downloading Data

I’m a historian of science, so let’s look for history of science articles. Search for ‘Isis‘ as a ‘Publication Name’ from the drop-down menu (see Figure 1) and notice that, as of 9/23/2013, there are 14,858 results (see Figure 2).

Figure 1: Searching for Isis as the name of a publication.
Figure 1: Searching for Isis as the name of a publication.
Figure 2: Isis periodical search results.
Figure 2: Isis periodical search results.

This is a list of every publication in the journal ISIS. Each individual record includes bibliographic material, abstract, and the list of references that are cited in the article. To get a reasonable dataset to work with, we’re going to download every article ever published in ISIS, of which there are 1,189. The rest of the records are book reviews, notes, etc. Select only the articles by clicking the checkbox next to ‘articles’ on the left side of the results screen and clicking ‘refine’.

The next step is to download all the records. This web service limits you to 500 records per download, so you’re going to need to download 3 separate files (records 1-500, 501-1000, and 1001-1189) and combine them together, which is a fairly complicated step, so pay close attention. There’s a little “Send to:” drop-down menu at the top of the search results (Figure 3). Click it, and click ‘Other File Formats’.

Figure 3: Saving Web of Science records.
Figure 3: Saving Web of Science records.

At the pop-up box, check the radio box for records 1 to 500 and enter those numbers, change the record content to ‘Full Record and Cited References’, and change the file format to ‘Plain Text’ (Figure 4). Save the file somewhere you’ll be able to find it. Do this twice more, changing the numbers to 501-1000 and 1001-1189, saving these files as well.

Figure 4: Parameters for downloading Web of Science files.
Figure 4: Parameters for downloading Web of Science files.

You’ll end up with three files, possibly named: savedrecs.txt, savedrecs(1).txt, and savedrecs(2).txt. If you open one up (Figure 5), you’ll see that each individual article gets its own several-dozen lines, and includes information like author, title, keywords, abstract, and (importantly in our case) cited references.

Figure 5: An example Isis record.
Figure 5: An example ISIS record.
Figure 6: The end of an ISIS record file.
Figure 6: The end of an ISIS record file.

You’ll also notice (Figures 5 & 6) that first two lines and last line of every file are special header and footer lines. If we want to merge the three files so that the Sci2 Tool can understand it, we have to delete the footer of the first file, the header and footer of the second file, and the header of the last file, so that the new text file only has one header at the beginning, one footer at the end, and none in between. Those of you who are familiar enough with a text editor (and let’s be honest, it should be everyone reading this) go ahead and copy the three files into one huge file with only one header and footer. If you’re feeling lazy, just download it here.

Creating a Citation Network

Now open the Sci2 Tool (Figure 7) and go to File->Load in the drop-down menu. Find your super file with all of ISIS and open it, loading it as an ‘ISI flat format’ file (Figure 8).

Figure 7: The Sci2 Tool.
Figure 7: The Sci2 Tool.
Figure 8: Loading a file as an ISI flat format file.
Figure 8: Loading a file as an ISI flat format file.

If all goes correctly, two new files should appear in the Data Manager, the pane on the right-hand side of the software. I’ll take a bit of a detour here to explain the Sci2 Tool.

The main ‘Console’ pane on the top-left will include a complete log of your workflow, including all the various algorithms you use, what settings and parameters you use with them, and how to cite the various ones you use. When you close the program, a copy of the text in the ‘Console’ pain will save itself as a log file in the program directory so you can go back to it later and see what exactly you did.

The ‘Scheduler’ pane on the bottom is just that: it shows you what algorithms are currently running and what already ran. You can safely ignore it.

Along with the drop-down menus at the top, the already-mentioned ‘Data Manager’ pane on the right is where you’ll be spending most of your time. Every time you load a file, it will appear in the data manager. Every time you run an algorithm on or manipulate that file in some way, a copy of it with the new changes will appear hierarchically nested below the original file. This is so, if you make a mistake, want to use an earlier version of the file, or want to run run a different set of analyses, you can still do so. You can right-click on files in the data manager to view or save them in various file formats. It is important to remember to make sure that the appropriate file is selected in the data manager when you run an analysis, as it’s easy to accidentally run an algorithm on some other random data file.

With that in mind, once your file is loaded, make sure to select (by left-clicking) the ‘1189 Unique ISI Records’ data file in the data manager. If you right-click and view the file, it should open up in Excel (Figure 9) or whatever your default *.csv viewer is, and you’ll see that the previous text file has been converted to a spreadsheet. You can look through it to see what the data look like.

Figure 9: All of the ISIS History of Science journal articles as a csv.
Figure 9: All of the ISIS History of Science journal articles as a csv.

When you’re done ogling at all the pretty data, close the spreadsheet and go back to the tool. Making sure the ‘1189 Unique ISI Records’ file is selected, go to ‘Data Preparation -> Extract Paper Citation Network’ in the drop-down menu.

Voilà! You now have a history of science citation network. The algorithm spits out two files: ‘Extracted paper-citation network’, which is the network file itself, and ‘Paper information’, which is a spreadsheet that includes all the nodes in the network (in this case, articles that either were published in ISIS or are cited by them). It includes a ‘localCitationCount’ column, which tells you how frequently a work is cited within the dataset (Shapin’s Leviathan and the Air Pump‘ is cited 16 times, you’ll see if you open up the file), and a ‘globalCitationCount’ column, which is how many times ISI Web of Science thinks the article has been cited overall, not just within the dataset (Merton’s ” The Matthew effect in science II” is cited 183 times overall). ‘globalCitationCount’ statistics are of course only available for the records you downloaded, so you have them for ISIS published articles, but none of the other records.

Select ‘Extracted paper-citation network’ in the data manager. From the drop-down menu, run ‘Analysis -> Networks -> Network Analysis Toolkit (NAT)’. It’s a good idea to run this on any network you have, just to see the basic statistics of what you’re working with. The details will appear in the console window (Figure 10).

Figure 10: Network analysis toolkit output on the ISIS citation network.
Figure 10: Network analysis toolkit output on the ISIS citation network.

There are a few things worth noting right away. The first is that there are 52,479 nodes; that means that our adorable little dataset of 1,189 articles actually referenced over 50,000 other works between them, about 50 refs/article. The second fact worth noting is that there are 54,915 directed edges, which is the total number of direct citations in the dataset. One directed edge is a citation from a citing node (an ISIS article) to a cited node (either an ISIS article, or a book, or whatever the author decides to reference).

The last bit worth pointing out is the number of weakly connected components, and the size of the largest connected component. Each weakly connected component is a chunk of the network connected by citation chains: if article A and B are the only articles which cite article C, if article C cites nothing else, and if A and B are uncited by any other articles, they together make a weakly connected component. As soon as another citation link comes from or to them, it becomes part of that component. In our case, the biggest component is 46,971 nodes, which means that most of the nodes in the network are connected to each other. That’s important, it means history of science as represented by ISIS is relatively cohesive. There are 215 weakly connected components in all, small islands that are disconnected from the mainland.

If you have Gephi installed, you can visualize the network by selecting ‘Extracted paper-citation network’ in the data manager and clicking ‘Visualization -> Networks -> Gephi’, though what you do from there is beyond the scope of these instructions. It also probably won’t make a heck of a lot of sense: there aren’t many situations where visualizing a citation network are actually useful. It’s what’s called a Directed Acyclic Graph, which are generally the most visually boring graphs around (don’t cite me on this).

I do have a very important warning. You can tell it’s important because it’s bold. The Sci2 Tool was made by my advisor Katy Börner as a tool for people with similar research to her own, whose interests lie in modeling and predicting the spread of information on a network. As such, the direction of citation edges created by the tool are opposite what many expect. They go from the cited source to the citing source, because the idea is that’s the direction that information flows, rather than from the citing source to the cited source. As a historian, I’m more interested in considering the network in the reverse direction: citing to cited, as that gives more agency to the author. More details in the footnote. 2

Great, now that that’s out of the way, let’s get to the more interesting analyses. Select ‘Extracted paper-citation network’ in the data manager and run ‘Data Preparation -> Extract Document Co-Citation Network’. And then wait. Have you waited for a while? Good, wait some more. This is a process. And 50,000 articles is a lot of articles. While you’re waiting, re-read Networks Demystified 4: Co-Citation Analysis to get an idea of what it is you’re doing and why you want to do it.

Okay, we’re done (assuming you increased the allotted memory to the tool like we discussed earlier). You’re no presented the ‘Co-citation Similarity Network’ in the data manager, and you should, once again, run ‘Analysis -> Networks -> Network Analysis Toolkit (NAT)’ in the Data Manager. This as well will take some time, and you’ll see why shortly.

Figure 11: Network analysis toolkit of the ISIS co-citation network.
Figure 11: Network analysis toolkit of the ISIS co-citation network.

Notice that while there are the same number of nodes (citing or cited articles) as before, 52,479, the number of edges went from 54,915 to 2,160,275, a 40x increase. Why? Because every time two articles are cited together, they get an edge between them and, according to the ‘Average degree’ in the console pane, each article or book is cited alongside an average of 82 other works.

In order to make the analysis and visualization of this network easier we’re going to significantly cut its size. Recall that document co-citation networks connect documents that are cited alongside each other, and that the weight of that connection is increased the more often the two documents appear together in a bibliography. What we’re going to do here is drastically reduce the network’s size deleting any edge between documents unless they’ve been cited together more than once. Select ‘Co-citation Similarity Network’ and run ‘Preprocessing -> Networks -> Extract Edges Above or Below Value’. Use the default settings (Figure 12).

Note that when you’re doing a scholarly citation analysis, cutting all the edges below a certain value (called ‘thresholding’) is usually a bad idea unless you know exactly how it will affect your study. We’re doing it here to make the walkthrough easier.

Figure 12: Extracting edges to reduce the size of the network.
Figure 12: Extracting edges to reduce the size of the network.

Run ‘Analysis -> Networks -> Network Analysis Toolkit (NAT)’ on the new ‘Edges above 1 by weight’ dataset, and note that the network has been reduced from two million edges to three thousand edges, a much more manageable number for our purposes. You’ll also see that there are 51,313 isolated nodes: nodes that are no longer connected to the network because we cut so many edges in our mindless rampage. Who cares about them? Let’s delete them too! Select ‘Edges above 1 by weight’ and run ‘Preprocessing -> Networks -> Delete Isolates’, and watch as fifty thousand precious history of science citations vanish in a puff of metadata. Gone.

If you run the Network Analysis Toolkit on the new network, you’ll see that we’re left with a small co-citation net of 1,166 documents and 3,344 co-citations between them. The average degree tells us that each document is connected to, on average, 6 other documents, and that the largest connected component contains 476 documents.

So now’s the moment of truth, the time to visualize all your hard work. If you know how to use Gephi, and have it installed, select ‘With isolates removed’ in the data manager and run ‘Visualization -> Networks -> Gephi’. If you don’t, run ‘Visualization -> Networks -> GUESS’ instead, and give it a minute to load. You will be presented with this stunning work of art vaguely reminiscent of last night’s spaghetti and meatball dinner (Figure 13).

Figure 13: GUESS in all its glory.
Figure 13: GUESS in all its glory.

Fear not! The first step to prettifying the network is to run ‘Layout -> GEM’ and then ‘Layout -> Bin Pack’. Better already, right? Then you can make edits using the graph modifier below (or using python commands in the interpreter), but the friendly folks at my lab have put together a script for you that will do that automatically. Run ‘Script -> Run Script’.

When you do, you will be presented with a godawful java applet that automatically sticks you in some horrible temp directory that you have to find your way out of. In the ‘Look In:’ navigation drop-down, find your way back to your desktop or your documents directory and then find wherever you installed the Sci2 Tool. In the Sci2 directory, there’s a folder called ‘scripts’, and in the ‘scripts’ folder, there’s a ‘GUESS’ folder, and in the ‘GUESS’ folder you will find the holy grail. Select ‘reference-co-occurrence-nw.py’ and press ‘open’.

Magic! Your document co-citation network is now all green and pretty, and you can zoom in and out using either the +/- button on the left, or using your mouse wheel and clicking and dragging on the network itself. It’ll look a bit like Figure 14.

Figure 14: Co-Citation network in GUESS.
Figure 14: Co-Citation network in GUESS.

If you feel more dangerous and cool, you can try visualizing the same network in Gephi, and it might come out something like Figure 15.

Figure 15: Gephi's document co-citation network, with nodes sized by how frequently they're cited in ISIS.
Figure 15: Gephi’s document co-citation network, with nodes sized by how frequently they’re cited in ISIS. Click to enlarge.

That’s it! You’ve co-cited a dataset. I hope you feel proud of yourself, because you should. And all without breaking a sweat. If you want (and you should want), you can save your results by right clicking the various files in the data manager you want to save. I’d recommend saving the most recent file, ‘With isolates removed’, and saving it as an NWB file, which is fairly easy to read and is the Sci2 Tool’s native format.

Stay-tuned for the paradoxically earlier-numbered Networks Demystified 6, on organizing your twitter feed.


  1. Part 4 also links to a few great tutorials on how to do this with programming, but if you don’t know the first thing about programming, start here instead.
  2. Those of you who know network basics, keep this in mind when running your analyses: PageRank, In & Out Degree, etc., may be opposite of what you expect, with the papers that cite the most sources as those with the highest In-Degree and PageRank. If this is opposite your workflow, you can fairly easily change the data by hand in a spreadsheet editor or with regular expressions.