http://www.bibsonomy.org/burst/user/schmitz/formalconceptanalysisBibSonomy BuRST Feed for /user/schmitz/formalconceptanalysis2008-07-21T01:24:52+02:00ScienceDirect - Web Semantics: Science, Services and Agents on the World Wide Web : Discovering shared conceptualizations in folksonomieshttp://www.bibsonomy.org/bibtex/265d350593fb907dcf25394cc1bfd8ce2/schmitzschmitz2008-03-03T08:12:06+01:00socialsoftware folksonomy myown socialbookmarking formalconceptanalysis fca 2008 <span style="color:#555555;">Robert <a href="http://www.bibsonomy.org/author/Jäschke">J&#228;schke</a> and Andreas <a href="http://www.bibsonomy.org/author/Hotho">Hotho</a> and Christoph <a href="http://www.bibsonomy.org/author/Schmitz">Schmitz</a> and Bernhard <a href="http://www.bibsonomy.org/author/Ganter">Ganter</a> and Gerd <a href="http://www.bibsonomy.org/author/Stumme">Stumme</a> </span><em>Web Semantics: Science, Services and Agents on the World Wide Web</em><em>6(1):38--53</em><em>#feb#2008. </em>Mon Mar 03 08:12:06 CET 2008Semantic Web and Web 2.0Web Semantics: Science, Services and Agents on the World Wide Web#feb#138--53Discovering shared conceptualizations in folksonomies62008socialsoftware folksonomy myown socialbookmarking formalconceptanalysis fca 2008 Social bookmarking tools are rapidly emerging on the Web. In such systems users are setting up lightweight conceptual structures called folksonomies. Unlike ontologies, shared conceptualizations are not formalized, but rather implicit. We present a new data mining task, the mining of all frequent tri-concepts, together with an efficient algorithm, for discovering these implicit shared conceptualizations. Our approach extends the data mining task of discovering all closed itemsets to three-dimensional data structures to allow for mining folksonomies. We provide a formal definition of the problem, and present an efficient algorithm for its solution. Finally, we show the applicability of our approach on three large real-world examples.