From 1983, he has been leader of the research group on Formal concept analysis and since 1993 Chairman of the "Ernst Schröder Center for Conceptual Knowledge Engineering".
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A significant international community of researchers follow Wille's work on Formal concept analysis, the main forums being the International Conferences on Formal Concept Analysis (ICFCA), Conceptual Structures (see also Conceptual graphs) (ICCS) and Concept Lattices and their Application (CLA) conferences.
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His most celebrated work is the invention of Formal concept analysis, a supervised machine learning technique that applies mathematical lattice theory to organize data based on objects and their shared attributes.
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