64 search results - page 3 / 13 » Optimizing Query Answering in Description Logics using Disju... |
OWLED
2008
13 years 8 months ago
2008
We study conjunctive query answering in the description logic EL, the core of the designated OWL2-EL profile of OWL2. In particular, we present an approach that allows the use of c...
DEXAW
2003
IEEE
14 years 22 days ago
2003
IEEE
We integrate ontology languages and logic programming (LP) by extending disjunctive logic programs (DLPs) and their semantics in order to support inverses and an infinite univers...
SCCC
2005
IEEE
14 years 1 months ago
2005
IEEE
Databases may not satisfy integrity constraints (ICs) for several reasons. Nevertheless, in most of the cases an important part of the data is still consistent wrt certain desired...
DLOG
2008
13 years 9 months ago
2008
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
FLOPS
2008
Springer
13 years 9 months ago
2008
Springer
In this paper, we present an extension of the scheme HH(C) (Hereditary Harrop formulas with Constraints) with a suitable formulation of negation in order to obtain a constraint ded...