Bayesian community detection.

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    Abstract

    Many networks of scientific interest naturally decompose into clusters or communities with comparatively fewer external than internal links; however, current Bayesian models of network communities do not exert this intuitive notion of communities. We formulate a nonparametric Bayesian model for community detection consistent with an intuitive definition of communities and present a Markov chain Monte Carlo procedure for inferring the community structure. A Matlab toolbox with the proposed inference procedure is available for download. On synthetic and real networks, our model detects communities consistent with ground truth, and on real networks, it outperforms existing approaches in predicting missing links. This suggests that community structure is an important structural property of networks that should be explicitly modeled.
    Original languageEnglish
    JournalNeural Computation
    Volume24
    Issue number9
    Pages (from-to)2434-2456
    ISSN0899-7667
    DOIs
    Publication statusPublished - 2012

    Keywords

    • Community detection
    • Complex networks
    • Infinite relational Model
    • Stochastic Block-model
    • Modularity
    • Normalized Cut

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