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» A Logical Study of Partial Entailment
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IWFM
1998
13 years 8 months ago
Strictly Level-Decreasing Logic Programs
We study strictly level-decreasing logic programs (sld-programs) as defined earlier by the present authors. It will be seen that sld-programs, unlike most other classes of logic p...
Anthony Karel Seda, Pascal Hitzler
AAAI
2006
13 years 8 months ago
Characterizing Data Complexity for Conjunctive Query Answering in Expressive Description Logics
Description Logics (DLs) are the formal foundations of the standard web ontology languages OWL-DL and OWL-Lite. In the Semantic Web and other domains, ontologies are increasingly ...
Magdalena Ortiz, Diego Calvanese, Thomas Eiter
CSL
2002
Springer
13 years 7 months ago
Hoare Logics for Recursive Procedures and Unbounded Nondeterminism
This paper presents sound and complete Hoare logics for partial and total correctness of recursive parameterless procedures in the context of unbounded nondeterminism. For total co...
Tobias Nipkow
ICLP
2007
Springer
14 years 1 months ago
DLVHEX-SPARQL: A SPARQL Compliant Query Engine Based on DLVHEX
This paper describes the dlvhex SPARQL plugin, a query processor for the upcoming Semantic Web query language standard by W3C. We report on the implementation of this languages usi...
Axel Polleres, Roman Schindlauer
KBS
2011
81views more  KBS 2011»
13 years 2 months ago
Existential rigidity and many modalities in order-sorted logic
Order-sorted logic is a useful tool for knowledge representation and reasoning because it enables representation of sorted terms and formulas along with partially ordered sorts (c...
Ken Kaneiwa