231 search results - page 23 / 47 » Answering Queries Using Views over Description Logics Knowle... |
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
Views over probabilistic data contain correlations between tuples, and the current approach is to capture these correlations using explicit lineage. In this paper we propose an al...
CSFW
2011
IEEE
12 years 7 months ago
2011
IEEE
—This paper explores the idea of knowledge-based security policies, which are used to decide whether to answer queries over secret data based on an estimation of the querier’s ...
SEMWEB
2001
Springer
13 years 11 months ago
2001
Springer
Metadata are widely used in order to fully exploit information resources available on corporate intranets or the Internet. The Resource Description Framework (RDF) aims at facilit...
ASWC
2006
Springer
13 years 11 months ago
2006
Springer
With the increasing use of ontologies in Semantic Web and enterprise knowledge management, it is critical to develop scalable and efficient ontology management systems. In this pap...
SEMWEB
2005
Springer
14 years 26 days ago
2005
Springer
Abstract. We introduce a framework, based on logic programming, for preferential reasoning with agents on the Semantic Web. Initially, we encode the knowledge of an agent as a logi...