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Aktuelle Version vom 8. Oktober 2015, 13:17 Uhr
Query Answering for OWL-DL with Rules
Query Answering for OWL-DL with Rules
Veröffentlicht: 2005 Juli
Journal: Journal of Web Semantics: Science, Services and Agents on the World Wide Web
Nummer: 1
Seiten: 41--60
Volume: 3
Referierte Veröffentlichung
Kurzfassung
Both OWL-DL and function-free Horn rules are decidable fragments of first-order logic with interesting, yet orthogonal expressive power. A combination of OWL-DL and rules is desirable for the Semantic Web; however, it might easily lead to the undecidability of interesting reasoning problems. Here, we present a decidable such combination where rules are required to be DL-safe: each variable in the rule is required to occur in a non-DL-atom in the rule body. We discuss the expressive power of such a combination and present an algorithm for query answering in the related logic SHIQ extended with DL-safe rules, based on a reduction to disjunctive programs.
Web Science und Wissensmanagement