http://www.bibsonomy.org/burst/user/michael/bookmarking+tagging_semanticsBibSonomy BuRST Feed for /user/michael/bookmarking+tagging_semantics2008-09-07T19:53:08+02:00http://www.bibsonomy.org/bibtex/2bf0468ac66e184edc5985fd11654253c/michaelmichael2008-01-04T16:59:10+01:00tagging_efficiency social toread tagging_clustering DISS ontologies iknow tagorapub folkrank bookmarking semantics folksonomy clustering 2007 tagora l3s tagging tagging_semantics myown <span style="color:#555555;">Miranda <a href="http://www.bibsonomy.org/author/Grahl">Grahl</a> und Andreas <a href="http://www.bibsonomy.org/author/Hotho">Hotho</a> und Gerd <a href="http://www.bibsonomy.org/author/Stumme">Stumme</a> </span><em>I-KNOW '07. 7th International Conference on Knowledge Management, </em><em>Graz, Austria, </em><em>September2007. </em>Fri Jan 04 16:59:10 CET 2008Graz, AustriaI-KNOW '07. 7th International Conference on Knowledge Management@PROCEEDINGS{ToMa07, title = {Proceedings of I-KNOW 2007}, year = {2007}, editor = {Tochtermann, Klaus and Maurer, Herrmann}, keywords = {knowledgemanagement iknow DISS ownstuff}, timestamp = {2007.11.06} }SeptemberConceptual Clustering of Social Bookmarking Sites2007tagging_efficiency social toread tagging_clustering DISS ontologies iknow tagorapub folkrank bookmarking semantics folksonomy clustering 2007 tagora l3s tagging tagging_semantics myown Currently, social bookmarking systems provide intuitive support for browsing locally their content. A global view is usually presented by the tag cloud of the system, but it does not allow a conceptual drill-down, e. g., along a conceptual hierarchy. In this paper, we present a clustering approach for computing such a conceptual hierarchy for a given folksonomy. The hierarchy is complemented with ranked lists of users and resources most related to each cluster. The rankings are computed using our FolkRank algorithm. We have evaluated our approach on large scale data from the del.icio.us bookmarking system.