relation: http://eprints.imtlucca.it/1096/ title: Folksonomies and clustering in the collaborative system CiteULike creator: Capocci, Andrea creator: Caldarelli, Guido subject: HA Statistics subject: QC Physics description: We analyze CiteULike, an online collaborative tagging system where users bookmark and annotate scientific papers. Such a system can be naturally represented as a tri-partite graph whose nodes represent papers, users and tags connected by individual tag assignments. The semantics of tags is studied here, in order to uncover the hidden relationships between tags. We find that the clustering coefficient can be used to analyze the semantical patterns among tags. publisher: Institute of Physics date: 2008-06 type: Article type: PeerReviewed identifier: Capocci, Andrea and Caldarelli, Guido Folksonomies and clustering in the collaborative system CiteULike. Journal of Physics A: Mathematical and Theoretical, 41 (22). p. 224016. ISSN 1751-8113 (2008) relation: http://dx.doi.org/10.1088/1751-8113/41/22/224016 relation: 10.1088/1751-8113/41/22/224016