74 search results - page 14 / 15 » Ontology-Mediated Query Answering with Data-Tractable Descri... |
CCS
2005
ACM
14 years 4 months ago
2005
ACM
This paper introduces the PeerAccess framework for reasoning about authorization in open distributed systems, and shows how a parameterization of the framework can be used to reas...
CORR
2006
Springer
13 years 11 months ago
2006
Springer
Through the Internet and the World-Wide Web, a vast number of information sources has become available, which offer information on various subjects by different providers, often i...
ICIP
1998
IEEE
15 years 11 days ago
1998
IEEE
We describe a new invariant-based data model for image databases under our approach for shape-based retrieval. The data model relies on contours description of the image shape, an...
ICDT
2012
ACM
12 years 1 months ago
2012
ACM
A universal model of a database D and a set Σ of integrity constraints is a database that extends D, satisfies Σ, and is most general in the sense that it contains sound and co...
AI
2010
Springer
13 years 11 months ago
2010
Springer
We develop a formal framework for comparing different versions of ontologies, and apply it to ontologies formulated in terms of DL-Lite, a family of `lightweight' description...