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Feb 20, 2015 at 16:48 comment added Steve Huntsman This is the sort of thing that tea.mathoverflow.net would be well suited for, if it were not derelict.
Feb 20, 2015 at 11:03 comment added Piotr Migdal @Name Link: stared.github.io/tagoverflow/?site=mathoverflow.net&size=32
Feb 20, 2015 at 9:51 comment added Name Some connecting edges are not visible. Is a bigger version of the graph (and with a better resolution) available?
Feb 16, 2015 at 21:08 comment added Piotr Migdal @JosephO'Rourke It is possible - see academia.stackexchange.com/questions/38969/….
Feb 16, 2015 at 12:52 comment added Piotr Migdal @Name Not direct. As explained, position is due to a spring model. Some things being central may be more likely to be in the centre, but it is not if and only if. Or rather - it is only 2d projection, so things can be in middle for many reasons.
Feb 15, 2015 at 19:24 comment added Name Is there a signification for the nodes which are in the middle part of the graph?
Feb 15, 2015 at 18:58 comment added Joseph O'Rourke @PiotrMigdal: Not sure this will help, but: arXiv statistics.
Feb 15, 2015 at 12:14 comment added Joseph O'Rourke @PiotrMigdal: I am sorry I don't know. But it certainly seems possible that the arXiv managers have collected and examined statistics.
Feb 15, 2015 at 11:33 comment added Piotr Migdal @JosephO'Rourke Great idea. Do you know if there are dumps of arXiv metadata?
Feb 15, 2015 at 10:49 comment added Piotr Migdal @მამუკაჯიბლაძე Fortune favours the bold! (You can get blocked anyway, with more of smaller queries; but it lasts for a few minutes, not - your lifetime.)
Feb 15, 2015 at 5:34 comment added მამუკა ჯიბლაძე @PiotrMigdal Oh now I see sorry! There it was orange, probably this confused me. So it is isolated there since 32 tags do not suffice to connect it with any others? I was afraid to invoke 64 because of your warning there :)
Feb 15, 2015 at 3:36 comment added Joseph O'Rourke It would be interesting to compare this graph to some measure of (international) professional activity in each subfield, e.g., papers published, # of researchers who identify with subfields, etc. In other words, how representative is the MO weight of ag.algebraic-geometry, etc.?
Feb 14, 2015 at 21:33 comment added Piotr Migdal nt.number-thoery is on "my image" (this post, blue, upper-left corner). If there is a problem with it (e.g. on your browser), write an issue - I would be grateful.
Feb 14, 2015 at 20:51 comment added მამუკა ჯიბლაძე Absolutely wonderful! One question: although on the image here you have more tags than what I see when I follow your link, there is the tag nt.number-theory which is not on your image. And that tag there is moreover not connected to any other tags. Does it mean number theory is sort of an isolated topic at MO??
Feb 13, 2015 at 15:19 comment added Piotr Migdal @joro It's certainly possible but a different project (if you want to do it, I would be happy to help - just mail me). With JSON API it is possible to do some of it, but the best way to go is via data.stackexchange.com. In any case, you need to define measure of interaction -> and later community detection like Louvain or (better) Infomap (see README.md of the project on GitHub).
Feb 13, 2015 at 12:55 comment added joro Can you try to detect "cliques of friends"? AFAICT voting is not in the database, but answering/commenting might be of help.
Feb 13, 2015 at 10:57 comment added Piotr Migdal @ScottMorrison Added in the description. In short: a spring model.
Feb 13, 2015 at 10:55 history edited Piotr Migdal CC BY-SA 3.0
added 309 characters in body
Feb 13, 2015 at 7:59 comment added Hachino The "tag-removed" made me smile, don't ask why. :)
Feb 12, 2015 at 23:23 comment added Kim Morrison Mod How is the node placement determined? It seems that this is the main information a viewer extracts from the graph, so it would be nice to know what it means.
Feb 12, 2015 at 21:38 comment added Piotr Migdal @GerhardPaseman Ad 1 I am aware of it, yet consider it beneficial & interesting for the community; if the community disagrees, there are down and close votes. Ad 2 code is on GitHub, feel invited to Fork or Pull Request with such improvements. In any case, for community detection is an derivate thing, making it simpler to see groupings (at least to some).
Feb 12, 2015 at 21:35 history edited Piotr Migdal CC BY-SA 3.0
added 203 characters in body
Feb 12, 2015 at 20:36 comment added Gerhard Paseman By the way, to be friendly to users who are color challenged, you might add a mark to each similarly colored circle, perhaps a clock-tick, so that such people who like color-coding can read it off the mark (or maybe use a chord). Gerhard "Make Such Graphs More Accessible" Paseman, 2015.02.12
Feb 12, 2015 at 20:31 comment added Gerhard Paseman Much as I appreciate such projects, I would like this to have a question format. A good question would be "where do I announce such things, and how?" Since you have already done that here, I recommend the next question "What improvements would you suggest for this particular project?" My worry is that people will think of MathOverflow meta as a good place to announce their cool project; meta is NOT such a place. A good place would be a user page, and I can see meta being used to have as answer such posts as your above. Gerhard "Does It Make MathOverflow Numbers?" Paseman, 2015.02.12
Feb 12, 2015 at 18:00 history asked Piotr Migdal CC BY-SA 3.0