Network structure, self-organization, and the growth of international collaboration in science |
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| Authors: | Caroline S Wagner Loet Leydesdorff |
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| Institution: | aGeorge Washington University Center for International Science and Technology Policy, 1957 E Street NW, Washington, DC 20057, USA;bAmsterdam School of Communications Research (ASCoR), University of Amsterdam, The Netherlands |
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| Abstract: | Different approaches have been used to analyse international collaboration in science but none can fully explain its rapid growth. Using international co-authorships, we test the hypothesis that international collaboration is a self-organising network. Applying tools from network analysis, the paper shows that the growth of international co-authorships can be explained based on the organising principle of preferential attachment, although the attachment mechanism deviates from an ideal power-law. Several explanations for the deviation are explored, including that of the influence of institutional constraints on the mechanism of self-organisation. |
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| Keywords: | Scientific collaboration Social network analysis Science policy Social systems Preferential attachment |
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