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Emergent Community Structure In Social Tagging Systems

Author

Listed:
  • CIRO CATTUTO

    (Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi", Compendio Viminale, 00184 Roma, Italy;
    Dipartimento di Fisica, Università di Roma "La Sapienza", P.le A. Moro, 2, 00185 Roma, Italy;
    Institute for Scientific Interchange (ISI), Torino, Italy)

  • ANDREA BALDASSARRI

    (Dipartimento di Fisica, Università di Roma "La Sapienza", P.le A. Moro, 2, 00185 Roma, Italy)

  • VITO D. P. SERVEDIO

    (Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi", Compendio Viminale, 00184 Roma, Italy;
    Dipartimento di Fisica, Università di Roma "La Sapienza", P.le A. Moro, 2, 00185 Roma, Italy)

  • VITTORIO LORETO

    (Dipartimento di Fisica, Università di Roma "La Sapienza", P.le A. Moro, 2, 00185 Roma, Italy;
    Institute for Scientific Interchange (ISI), Torino, Italy)

Abstract

A distributed classification paradigm known ascollaborative tagginghas been widely adopted in new Web applications designed to manage and share online resources. Users of these applications organize resources (Web pages, digital photographs, academic papers) by associating with them freely chosen text labels, ortags. Here we leverage the social aspects of collaborative tagging and introduce a notion ofresource distancebased on the collective tagging activity of users. We collect data from a popular system and perform experiments showing that our definition of distance can be used to build a weighted network of resources with a detectable community structure. We show that this community structure clearly exposes the semantic relations among resources. The communities of resources that we observe are a genuinely emergent feature, resulting from the uncoordinated activity of a large number of users, and their detection paves the way for mapping emergent semantics in social tagging systems.

Suggested Citation

  • Ciro Cattuto & Andrea Baldassarri & Vito D. P. Servedio & Vittorio Loreto, 2008. "Emergent Community Structure In Social Tagging Systems," Advances in Complex Systems (ACS), World Scientific Publishing Co. Pte. Ltd., vol. 11(04), pages 597-608.
    • Handle: RePEc:wsi:acsxxx:v:11:y:2008:i:04:n:s0219525908001817
    DOI: 10.1142/S0219525908001817
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