Why Not? Explaining Missing Entailments with Evee (Technical Report)
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Understanding logical entailments derived by a description logic reasoner is not always straight-forward for ontology users. For this reason, various methods for explaining entailments using justifications and proofs have been developed and implemented as plug-ins for the ontology editor Protégé. However, when the user expects a missing consequence to hold, it is equally important to explain why it does not follow from the ontology. In this paper, we describe a new version of E VEE, a Protégé plugin that now also provides explanations for missing consequences, via existing and new techniques based on abduction and counterexamples.
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