An Ontology Debugger for the Semantic Wiki KnowWE (Tool Presentation).

KnowWE is a semantic wiki that provides the possibility to define and maintain ontologies and strong problem-solving knowledge. Recently, the ontology engineering capabilities of KnowWE were significantly extended. As with other ontology engineering tools, the support of ontology debugging during the development of ontologies is the deficient. We present an Ontology Debugger for KnowWE that is based on the delta debugging approach known from Software Engineering. KnowWE already provides possibilities to define test cases to be used with various knowledge representations. While reusing the existing testing capabilities we implemented a debugger that is able to identify failure-inducing statements between two revisions of an ontology.