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Is there any tool where one can figure out if two people have coauthored or not? Like the tool where one can figure out somebody's Erdos _number_ .

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  • $\begingroup$ related: 1 $\endgroup$ – Kaveh Aug 9 '11 at 10:06
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In computer science, DBLP might be a better idea than MathSciNet. Your own page in DBLP lists all your coauthors; the database is certainly not complete, but usually the information is correct.

You can also try to use Google Scholar, with a search similar to this:

author:foo author:bar

As always with Google Scholar, double-check the results.

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    $\begingroup$ I just tried comparing DBLP to MathSciNet for my own list of co-authors. DBLP was quite a bit more complete than MathSciNet but there was at least one pair of co-authors that MathSciNet found and DBLP missed (on a math paper, of course — with Greg Kuperberg and Günter Ziegler). So combining answers from multiple sources is probably a better answer than just picking a single database. $\endgroup$ – David Eppstein Aug 31 '11 at 23:11
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Complementing Jukka's answer: There's a Java-based tool called DBL-Browser, which uses DBLP and provides you with lots of graphical charts, like this:

It uses the same database as DBLP. It can be used both online or offline. You must download the whole DBLP database (~ 60MB) in order to use it offline.

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  • $\begingroup$ Is there a recent version of the DBLP database for download? $\endgroup$ – Kristoffer Arnsfelt Hansen Oct 31 '10 at 16:56
  • $\begingroup$ The current version seems to be 2-3 years old. I don't know if there's a newer version, but I'm eager to know too. Contacting the author might be the best option. $\endgroup$ – M.S. Dousti Oct 31 '10 at 18:04
  • $\begingroup$ Wow, that's really cool. Thanks for the link! $\endgroup$ – Mark Reitblatt Nov 10 '10 at 17:23
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Try the MathSciNet Collaboration Distance Calculator.

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    $\begingroup$ the reference to the Erdős number calculator is to MathSciNet, so I think the OP is looking for something similar but based on DBLP or other CS-focused publications databases. $\endgroup$ – András Salamon Oct 31 '10 at 12:52
  • $\begingroup$ Actually, the MathSciNet listing of coauthors of a given author is a different feature than its collaboration distance calculator. $\endgroup$ – David Eppstein Aug 31 '11 at 23:12
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There is also Microsoft Academic Search if you're looking for graphical display of coauthor graphs, although it does not appear to be a finished product content-wise.

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    $\begingroup$ But like Google Scholar, ALWAYS double-check the results. $\endgroup$ – Jeffε Nov 1 '10 at 19:21

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