183 search results - page 9 / 37 » Improving Query Answering over DL-Lite Ontologies |
IJIS
2007
13 years 7 months ago
2007
In this paper, we introduce principles for ontology-based querying of information bases. We consider a framework in which a basis ontology over atomic concepts in combination with ...
KR
2010
Springer
14 years 19 days ago
2010
Springer
Ontologies can be used to provide an enriched vocabulary for the formulation of queries over instance data. We identify query emptiness and predicate emptiness as two central reas...
SIGMOD
2003
ACM
14 years 8 months ago
2003
ACM
Many applications employ sensors for monitoring entities such as temperature and wind speed. A centralized database tracks these entities to enable query processing. Due to contin...
DEXA
2007
Springer
14 years 2 months ago
2007
Springer
The semantic web is based on ontologies and metadata that indexes resources using ontologies. This indexing is called annotation. Ontology based information retrieval is an operati...
SEMWEB
2004
Springer
14 years 1 months ago
2004
Springer
Abstract. This paper describes the design and implementation of Bibster, a Peer-to-Peer system for exchanging bibliographic data among researchers. Bibster exploits ontologies in d...