Temporal information gathering process for node ranking in time-varying networks

Cunquan Qu, Xiuxiu Zhan, Guanghui Wang, Jianliang Wu, Zi-ke Zhang

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
99 Downloads (Pure)

Abstract

Many systems are dynamic and time-varying in the real world. Discovering the vital nodes in temporal networks is more challenging than that in static networks. In this study, we proposed a temporal information gathering (TIG) process for temporal networks. The TIG-process, as a node's importance metric, can be used to do the node ranking. As a framework, the TIG-process can be applied to explore the impact of temporal information on the significance of the nodes. The key point of the TIG-process is that nodes' importance relies on the importance of its neighborhood. There are four variables: temporal information gathering depth n, temporal distance matrix D, initial information c, and weighting function f. We observed that the TIG-process can degenerate to classic metrics by a proper combination of these four variables. Furthermore, the fastest arrival distance based TIG-process (fad-tig) is performed optimally in quantifying nodes' efficiency and nodes' spreading influence. Moreover, for the fad-tig process, we can find an optimal gathering depth n that makes the TIG-process perform optimally when n is small.

Original languageEnglish
Article number033116
Pages (from-to)1-17
Number of pages17
JournalChaos
Volume29
Issue number3
DOIs
Publication statusPublished - 2019

Keywords

  • Social networks
  • Data mining
  • Graph theory
  • Covariance and correlation

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