On time-varying collaboration networks |
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| Authors: | Matheus P Viana Diego R Amancio Luciano da F Costa |
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| Institution: | 1. Developmental and Cell Biology, University of California Irvine, Irvine, CA, United States;2. Institute of Physics of São Carlos, University of São Paulo, P.O. Box 369, Postal Code 13560-970, São Carlos, São Paulo, Brazil |
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| Abstract: | The patterns of scientific collaboration have been frequently investigated in terms of complex networks without reference to time evolution. In the present work, we derive collaborative networks (from the arXiv repository) parameterized along time. By defining the concept of affine group, we identify several interesting trends in scientific collaboration, including the fact that the average size of the affine groups grows exponentially, while the number of authors increases as a power law. We were therefore able to identify, through extrapolation, the possible date when a single affine group is expected to emerge. Characteristic collaboration patterns were identified for each researcher, and their analysis revealed that larger affine groups tend to be less stable. |
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