Time varying networks and the weakness of strong ties

Márton Karsai, Nicola Perra, Alessandro Vespignani*

*Tämän työn vastaava kirjoittaja

    Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

    150 Sitaatiot (Scopus)
    217 Lataukset (Pure)

    Abstrakti

    In most social and information systems the activity of agents generates rapidly evolving time-varying networks. The temporal variation in networks' connectivity patterns and the ongoing dynamic processes are usually coupled in ways that still challenge our mathematical or computational modelling. Here we analyse a mobile call dataset and find a simple statistical law that characterize the temporal evolution of users' egocentric networks. We encode this observation in a reinforcement process defining a time-varying network model that exhibits the emergence of strong and weak ties. We study the effect of time-varying and heterogeneous interactions on the classic rumour spreading model in both synthetic, and real-world networks. We observe that strong ties severely inhibit information diffusion by confining the spreading process among agents with recurrent communication patterns. This provides the counterintuitive evidence that strong ties may have a negative role in the spreading of information across networks.

    AlkuperäiskieliEnglanti
    Artikkeli4001
    Sivut1-7
    JulkaisuScientific Reports
    Vuosikerta4
    DOI - pysyväislinkit
    TilaJulkaistu - 10 helmikuuta 2014
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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