Journal of Xidian University

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Evolutionary spectral approach to finding communities in dynamic networks

FU Lidong1,2;MA Xiaoke2;NIE Jingjing1   

  1. (1. The School of Computer, Xi'an Univ. of Science and Technology, Xi'an 710054, China;
    2. School of Computer Science and Technology, Xidian Univ., Xi'an 710071, China)
  • Received:2017-04-18 Online:2018-04-20 Published:2018-06-06

Abstract:

To effectively detect community structure in dynamic complex networks, modularity and modularity density functions are optimized under the evolutionary framework. By optimizing these two functions, we prove that optimizing these two functions can be reformulated as an evolutionary spectral optimization problem, and novel evolutionary spectral clustering algorithms are proposed. Compared to state-of-the-art approaches, the proposed algorithms are more accurate for both the simulated networks and real world dynamic networks.

Key words: dynamic networks, community structure, modularity, modularity density, evolutionary spectral clustering