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CORR
2011
Springer
186views Education» more  CORR 2011»
13 years 6 months ago
A Goal-Directed Implementation of Query Answering for Hybrid MKNF Knowledge Bases
Ontologies and rules are usually loosely coupled in knowledge representation formalisms. In fact, ontologies use open-world reasoning while the leading semantics for rules use non...
Ana Sofia Gomes, José Júlio Alferes,...
ECAI
2008
Springer
14 years 1 months ago
A Coherent Well-founded Model for Hybrid MKNF Knowledge Bases
Abstract. With the advent of the Semantic Web, the question becomes important how to best combine open-world based ontology languages, like OWL, with closed-world rules paradigms. ...
Matthias Knorr, José Júlio Alferes, ...
DOOD
1997
Springer
134views Database» more  DOOD 1997»
14 years 3 months ago
Well-Founded Semantics for Deductive Object-Oriented Database Languages
Abstract. We present a well-founded semantics for deductive objectoriented database (dood) languages by applying the alternating- xpoint characterization of the well-founded model ...
Wolfgang May, Bertram Ludäscher, Georg Lausen
RR
2007
Springer
14 years 5 months ago
Decidability Under the Well-Founded Semantics
The well-founded semantics (WFS) for logic programs is one of the few major paradigms for closed-world reasoning. With the advent of the Semantic Web, it is being used as part of r...
Natalia Cherchago, Pascal Hitzler, Steffen Hö...
CADE
2001
Springer
14 years 11 months ago
A Top-Down Procedure for Disjunctive Well-Founded Semantics
Abstract. Skepticism is one of the most important semantic intuitions in artificial intelligence. The semantics formalizing skeptical reasoning in (disjunctive) logic programming i...
Kewen Wang