412 search results - page 38 / 83 » Aggregate queries over ontologies |
WISE
2005
Springer
14 years 3 months ago
2005
Springer
Abstract. Answering a query over a group of RDF data pages is a trivial process. However, in the Semantic Web, there is a need for ontology technology. Consequently, OWL, a family ...
DEXAW
2008
IEEE
13 years 12 months ago
2008
IEEE
With the increasing development of real applications using Semantic Web Technologies, it is necessary to provide scalable and efficient ontology querying and reasoning systems. In ...
ECAI
1998
Springer
14 years 1 months ago
1998
Springer
Abstract. We extend different Description Logics by concrete domains (such as integers and reals) and by aggregation functions over these domains (such as min;max;count;sum), which...
SEBD
2007
13 years 11 months ago
2007
We consider the problem of query containment over an object data model derived from F-logic. F-logic has generated considerable interest commercially, in the academia, and within ...
SENSYS
2003
ACM
14 years 3 months ago
2003
ACM
Sensor networks promise viable solutions to many monitoring problems. However, the practical deployment of sensor networks faces many challenges imposed by real-world demands. Sen...