2181 search results - page 21 / 437 » Ontologies and Description Logics |
DLOG
2007
15 years 8 days ago
2007
We present cq-programs, which enhance nonmonotonic description logics (dl-) programs by conjunctive queries (CQ) and union of conjunctive queries (UCQ) over Description Logics kno...
SEMWEB
2007
Springer
15 years 4 months ago
2007
Springer
Classical ontologies are not suitable to represent imprecise nor uncertain pieces of information. Fuzzy Description Logics were born to represent the former type of knowledge, but ...
DLOG
2010
14 years 8 months ago
2010
Abstract. Ontologies undergo changes for reasons such as changes in knowledge, meeting varying application requirements. Thus, for different versions of a considered ontology, it i...
ESWS
2007
Springer
15 years 4 months ago
2007
Springer
State-of-the-art research on automated learning of ontologies from text currently focuses on inexpressive ontologies. The acquisition of complex axioms involving logical connective...
SAC
2006
ACM
15 years 3 months ago
2006
ACM
We present a framework and an application for semanticbased retrieval of images. Our approach adopts a two-level ontology structure in a subset of OWL-DL. In the core ontology onl...