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Towards Practical Deletion Repair of Inconsistent DL-programs

Nonmonotonic Description Logic (DL-) programs couple nonmonotonic logic programs with DL-ontologies through queries in a loose way which may lead to inconsistency, i.e., lack of an answer set. Recently defined repair answer sets remedy this but a straightforward computation method lacks practicality. We present a novel evaluation algorithm for deletion repair answer sets based on support sets, which reduces evaluation of DL-LiteA ontology queries to constraint matching. This leads to significant performance gains towards inconsistency management in practice.