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Condensed Matter > Statistical Mechanics

Title: The structure of scientific collaboration networks

Authors: M. E. J. Newman (Santa Fe Institute)
Abstract: We investigate the structure of scientific collaboration networks. We consider two scientists to be connected if they have authored a paper together, and construct explicit networks of such connections using data drawn from a number of databases, including MEDLINE (biomedical research), the Los Alamos e-Print Archive (physics), and NCSTRL (computer science). We show that these collaboration networks form "small worlds" in which randomly chosen pairs of scientists are typically separated by only a short path of intermediate acquaintances. We further give results for mean and distribution of numbers of collaborators of authors, demonstrate the presence of clustering in the networks, and highlight a number of apparent differences in the patterns of collaboration between the fields studied.
Comments: 7 pages, 3 postscript figures
Subjects: Statistical Mechanics (cond-mat.stat-mech)
Journal reference: Proc. Natl. Acad. Sci. USA 98, 404-409 (2001)
DOI: 10.1073/pnas.021544898
Report number: SFI working paper 00-07-037
Cite as: arXiv:cond-mat/0007214 [cond-mat.stat-mech]
  (or arXiv:cond-mat/0007214v1 [cond-mat.stat-mech] for this version)

Submission history

From: Mark Newman [view email]
[v1] Wed, 12 Jul 2000 20:52:39 GMT (29kb)