%0 Conference Paper %1 jaeschke2006trias %A Jäschke, Robert %A Hotho, Andreas %A Schmitz, Christoph %A Ganter, Bernhard %A Stumme, Gerd %B Proceedings of the 6th IEEE International Conference on Data Mining (ICDM 06) %C Hong Kong %D 2006 %I IEEE Computer Society %K 12 2006 algorithm fca iccs_example l3s ol_web2.0 trias trias_example methods_concepts %P 907-911 %T TRIAS - An Algorithm for Mining Iceberg Tri-Lattices %U http://www.kde.cs.uni-kassel.de/jaeschke/paper/jaeschke06trias.pdf %X In this paper, we present the foundations for mining frequent tri-concepts, which extend the notion of closed itemsets to three-dimensional data to allow for mining folksonomies. We provide a formal definition of the problem, and present an efficient algorithm for its solution as well as experimental results on a large real-world example.