251 search results - page 25 / 51 » Rewriting Aggregate Queries using Description Logic |
DLOG
2011
12 years 11 months ago
2011
W3C currently extends the SPARQL query language with so-called entailment regimes, which define how queries are evaluated using logical entailment relations. We describe a sound a...
ESWS
2010
Springer
13 years 9 months ago
2010
Springer
Abstract. Description Logic Programs (DL-programs) have been introduced to combine ontological and rule-based reasoning in the context of the Semantic Web. A DL-program loosely com...
DAWAK
2000
Springer
14 years 4 days ago
2000
Springer
In the context of multidimensional databases implemented on relational DBMSs through star schemes, the most effective technique to enhance performances consists of materializing re...
JODS
2008
13 years 7 months ago
2008
Information integration and retrieval are useful tasks in many information systems. In these systems, it is far from an easy task to directly integrate information from natural lan...
DLOG
2008
13 years 10 months ago
2008
The paper addresses the problem of explaining some reasoning tasks associated with the DL-Lite Description Logic. Because of the simplicity of the language, standard concept level ...