64 search results - page 7 / 13 » Optimizing Query Answering in Description Logics using Disju... |
ICDE
2000
IEEE
15 years 7 days ago
2000
IEEE
In information-integration systems, sources may have diverse and limited query capabilities. In this paper we show that because sources have restrictions on retrieving their infor...
SEBD
2007
14 years 9 days ago
2007
The use of ontologies in various application domains, such as Data Integration, the Semantic Web, or ontology-based data management, where ontologies provide the access to large am...
DEXAW
2007
IEEE
14 years 5 months ago
2007
IEEE
In this paper we explore embeddings of the various kinds of RDF entailment in F-Logic. We show that the embeddings of simple, RDF, and RDFS entailment, as well as a large fragment...
ICDT
1990
ACM
14 years 2 months ago
1990
ACM
Ordinary logical implication is not enough for answering queries in a logic database, since especially negative information is only implicitly represented in the database state. M...
SEMWEB
2005
Springer
14 years 4 months ago
2005
Springer
Semantic query optimization (SQO) has been proved to be quite useful in various applications (e.g., data integration, graphical query generators, caching, etc.) and has been extens...