396 search results - page 7 / 80 » Semantic Optimization of Preference Queries |
FQAS
2004
Springer
14 years 1 months ago
2004
Springer
In: Proceedings of the Sixth International Conference On Flexible Query Answering Systems (FQAS-04), Springer-Verlag LNAI 3055, pp. 203-216. c 2004 by Springer-Verlag. To model qu...
PODS
2010
ACM
14 years 21 days ago
2010
ACM
Both semantic and type-based query optimization rely on the idea that queries often exhibit non-trivial rewritings if the state space of the database is restricted. Despite their ...
ATAL
2008
Springer
13 years 9 months ago
2008
Springer
In order to obtain semantic interoperability in open MultiAgent Systems, agents need to agree on the basis of different ontologies. In this paper we formally define mapping as cor...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
NLDB
2004
Springer
14 years 29 days ago
2004
Springer
Many queries processed on the World Wide Web do not return the desired results because they fail to take into account the context of the query and information about user’s situat...