<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Taxonomy and clustering in collaborative systems: the case of the on-line encyclopedia Wikipedia"^^ . "In this paper we investigate the nature and structure of the relation between imposed classifications and real clustering in a particular case of a scale-free network given by the on-line encyclopedia Wikipedia. We find a statistical similarity in the distributions of community sizes both by using the top-down approach of the categories division present in the archive and in the bottom-up procedure of community detection given by an algorithm based on the spectral properties of the graph. Regardless of the statistically similar behaviour, the two methods provide a rather different division of the articles, thereby signaling that the nature and presence of power laws is a general feature for these systems and cannot be used as a benchmark to evaluate the suitability of a clustering method."^^ . "2008-01" . "81" . "2" . . "IOPscience"^^ . . . "EPL (Europhysics Letters)"^^ . . . "02955075" . . . . . . . . . . . . . "Andrea"^^ . "Capocci"^^ . "Andrea Capocci"^^ . . "Guido"^^ . "Caldarelli"^^ . "Guido Caldarelli"^^ . . "Francesco"^^ . "Rao"^^ . "Francesco Rao"^^ . . . . . "HTML Summary of #1097 \n\nTaxonomy and clustering in collaborative systems: the case of the on-line encyclopedia Wikipedia\n\n" . "text/html" . . . "HA Statistics"@en . . . "QC Physics"@en . .