40 search results - page 7 / 8 » Conjunctive Query Answering for Description Logics with Tran... |
PVLDB
2010
13 years 7 months ago
2010
Ontology-based data access is a powerful form of extending database technology, where a classical extensional database (EDB) is enhanced by an ontology that generates new intensio...
CADE
2006
Springer
14 years 8 months ago
2006
Springer
CEL (Classifier for EL) is a reasoner for the small description logic EL+ which can be used to compute the subsumption hierarchy induced by EL+ ontologies. The most distinguishing ...
ICDT
2005
ACM
14 years 2 months ago
2005
ACM
We give two sufficient conditions on XPath like languages for having first order expressivity, meaning that every first order definable set of paths in an ordered node-labeled t...
LPAR
2004
Springer
14 years 1 months ago
2004
Springer
Resolution-based calculi are among the most widely used calculi for theorem proving in first-order logic. Numerous refinements of resolution are nowadays available, such as e.g. ...
ENTCS
2007
13 years 8 months ago
2007
Description Logics (DLs) are a family of logic based knowledge representation formalisms. Although they have a range of applications, they are perhaps best known as the basis for ...