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P. Cimiano, A. Hotho, G. Stumme, and J. Tane. Proceedings of the The Second International Conference on Formal Concept Analysis (ICFCA 04), volume 2961 of LNCS, Springer, (2004)
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C. Schmitz, A. Hotho, R. Jäschke, and G. Stumme. Data Science and Classification (Proc. IFCS 2006 Conference), page 261-270. Berlin/Heidelberg, Springer, (July 2006)Ljubljana.
A. Hotho, R. Jäschke, C. Schmitz, and G. Stumme. Proc. Workshop on Applications of Semantic Technologies, Informatik 2006, P-94, Dresden, (October 2006)
A. Hotho, A. Maedche, and S. Staab. Proc. of the Workshop ``Text Learning: Beyond Supervision'' at IJCAI 2001. Seattle, WA, USA, August 6, 2001, (2001)