Modeling the evolution of continuously-observed networks: Communication in a Facebook-like community

نویسندگان

  • Tore Opsahl
  • Bernie Hogan
چکیده

Building on existing stochastic actor-oriented models for panel data, we employ a conditional logistic framework to explore growth mechanisms for tie creation in continuously-observed networks. This framework models the likelihood of tie formation distinguishing it from hazard models that consider time to tie formation. It enables multiple growth mechanisms for network evolution (homophily, focus constraints, reinforcement, reciprocity, triadic closure, and popularity) to be modeled simultaneously. We apply this framework to communication within a Facebook-like community. The findings exemplify the inadequacy of descriptive measures that test single mechanisms independently. They also indicate how system design shapes behavior and network evolution. tie creation; growth mechanisms; SAOMs; network evolution models; online communication Acknowledgements We gratefully acknowledge Filip Agneessens, Ammon Salter, and Tom Snijders for constructive comments on an earlier draft of this paper as well as the participants at the International Sunbelt Social Network Conference 28, and workshop participants at University of Oxford and University of Cambridge.

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تاریخ انتشار 2010