Moment closure approximations for discrete adaptive networks

Güven Demirel, Federico Vazquez, Gesa Böhme, Thilo Gross

Research output: Contribution to journalArticle (Academic Journal)peer-review

50 Citations (Scopus)
264 Downloads (Pure)

Abstract

Moment-closure approximations are an important tool in the analysis of the dynamics on both static and adaptive networks. Here, we provide a broad survey over different approximation schemes by applying each of them to the adaptive voter model. While already the simplest schemes provide reasonable qualitative results, even very complex and sophisticated approximations fail to capture the dynamics quantitatively. We then perform a detailed analysis that identifies the emergence of specific correlations as the reason for the failure of established approaches, before presenting a simple approximation scheme that works best in the parameter range where all other approaches fail. By combining a focused review of published results with new analysis and illustrations, we seek to build up an intuition regarding the situations when existing approaches work, when they fail, and how new approaches can be tailored to specific problems.
Original languageEnglish
Pages (from-to)68-80
Number of pages13
JournalPhysica D: Nonlinear Phenomena
Volume267
Early online date11 Jul 2013
DOIs
Publication statusPublished - 15 Jan 2014

Bibliographical note

Special Issue: Evolving Dynamical Networks

Keywords

  • Adaptive network
  • Moment-closure approximation
  • Adaptive voter model
  • Fragmentation transition
  • State correlations

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