BibSonomy publications for /user/dbenz/comparisonMon Apr 14 09:27:59 CEST 2008Taxonomy and clustering in collaborative systems: the case of the on-line encyclopedia Wikipedia2007comparison clustering wikipedia toread taxonomy 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 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.Sat Oct 06 18:15:18 CEST 2007Exploring The Value Of Folksonomies For Creating Semantic Metadata2007folksonomy metadata comparison toread