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WORL : A Web Ontology Rule Language
2011 (English)In: Proceedings of the 3rd International Conference on Knowledge and Systems Engineering (KSE), IEEE, 2011, 32-39Konferensbidrag (Refereed)
Abstract [en]

We develop a Web ontology rule language, called WORL, which combines a variant of OWL 2 RL with eDatalog-with-negation. We disallow the features of OWL 2 RL that play the role of constraints (i.e., the ones that are translated to negative clauses), but allow additional features like negation, the minimal number restriction and unary external checkable predicates to occur in the left hand side of concept inclusion axioms. Some restrictions are adopted to guarantee a translation into eDatalog-with-negation. We also develop the well-founded semantics for WORL and the standard semantics for stratified WORL (SWORL) via translation into eDatalog-with-negation. Both WORL and SWORL have PTime data complexity. In contrast to the existing combined formalisms, in WORL and SWORL negation in concept inclusion axioms is interpreted using nonmonotonic semantics.

National Category
Computer Science
Identifiers
urn:nbn:se:liu:diva-72699 (URN)10.1109/KSE.2011.14 (DOI)978-1-4577-1848-9 (ISBN)oai:DiVA.org:liu-72699 (OAI)
Conference
Third International Conference on Knowledge and Systems Engineering (KSE), 14-17 Oct. 2011, Hanoi
Available from2011-12-05 Created:2011-12-05 Last updated:2012-02-13

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Cao, Son ThanhNguyen, Linh AnhSzalas, Andrzej
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Vinh Univ, VietnamKPLAB - Knowledge Processing LabThe Institute of Technology
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