97 search results - page 3 / 20 » Distributed Island-Based Query Answering for Expressive Onto... |
DLOG
2006
13 years 7 months ago
2006
The novel context of accessing and querying large data repositories through ontologies that are formalized in terms of expressive DLs requires on the one hand to consider query an...
SEMWEB
2010
Springer
13 years 3 months ago
2010
Springer
Abstract. Policies are declarations of constraints on the behaviour of components within distributed systems, and are often used to capture norms within agent-based systems. A few ...
PVLDB
2010
13 years 4 months ago
2010
Ontology-based data access is a powerful form of extending database technology, where a classical extensional database (EDB) is enhanced by an ontology that generates new intensio...
ESWS
2008
Springer
13 years 7 months ago
2008
Springer
In order to overcome the limitations of deductive logic-based approaches to deriving operational knowledge from ontologies, especially when data come from distributed sources, indu...
SSDBM
2002
IEEE
13 years 11 months ago
2002
IEEE
This paper presents an approach to answering queries over an ontology modelled using a description logic. The ontology acts as a global schema, providing a declarative description...