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Using Ontologies in a KDD Workbench

Domain understanding is one of the first steps in real-world applications of Knowledge Discovery in Databases (KDD). Preprocessing the data properly and finding an appropriate representation is crucial for a successful application of data mining algorithms. We present a metamodel of KDD preprocessing chains that contains an ontology for describing conceptual domain knowledge. This metamodel is operational, yet abstract enough to allow the reuse of successful KDD applications in