relation: http://eprints.imtlucca.it/1097/
title: Taxonomy and clustering in collaborative systems: the case of the on-line encyclopedia Wikipedia
creator: Capocci, Andrea
creator: Rao, Francesco
creator: Caldarelli, Guido
subject: HA Statistics
subject: QC Physics
description: 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.
publisher: IOPscience
date: 2008-01
type: Article
type: PeerReviewed
identifier:   Capocci, Andrea and Rao, Francesco and Caldarelli, Guido  Taxonomy and clustering in collaborative systems: the case of the on-line encyclopedia Wikipedia.  EPL (Europhysics Letters), 81 (2).  p. 28006.  ISSN 0295-5075       (2008)  
relation: http://dx.doi.org/10.1209/0295-5075/81/28006
relation: 10.1209/0295-5075/81/28006