Snapshot Centrality Indices in Dynamic FIFO Networks

  • Authors:
  • Tatiana M. Tabirca;Kenneth N. Brown;Cormac J. Sreenan

  • Affiliations:
  • Mobile and Internet System Laboratory, Department of Computer Science, University of College Cork, Cork, Ireland;Cork Constraint Computation Centre, Department of Computer Science, University of College Cork, Cork, Ireland;Mobile and Internet System Laboratory, Department of Computer Science, University of College Cork, Cork, Ireland

  • Venue:
  • Journal of Mathematical Modelling and Algorithms
  • Year:
  • 2011

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Abstract

The article introduces the concept of snapshot dynamic indices as centrality measures to analyse how the importance of nodes changes over time in dynamic networks. In particular, the dynamic stress-snapshot and dynamic betweenness snapshot are investigated. We present theoretical results on dynamic shortest paths in first-in first-out dynamic networks, and then introduce some algorithms for computing these indices in the discrete-time case. Finally, we present some experimental results exploring the algorithms' efficiency and illustrating the variation of the dynamic betweenness snapshot index for some sample dynamic networks.