777 search results - page 70 / 156 » Optimization of Relational Preference Queries |
147
Voted
SEMWEB
2010
Springer
15 years 19 days ago
2010
Springer
RDF(S) and OWL 2 currently support only static ontologies. In practice, however, the truth of statements often changes with time, and Semantic Web applications often need to repres...
148
Voted
SIGMOD
2011
ACM
14 years 5 months ago
2011
ACM
An important means of allowing non-expert end-users to pose ad hoc queries — whether over single databases or data integration systems — is through keyword search. Given a set...
114
Voted
COLING
2010
14 years 9 months ago
2010
This paper presents a novel method for acquiring a set of query patterns to retrieve documents containing important information about an entity. Given an existing Wikipedia catego...
104
Voted
ICDT
2005
ACM
15 years 8 months ago
2005
ACM
In recent years wavelets were shown to be effective data synopses. We are concerned with the problem of finding efficiently wavelet synopses for massive data sets, in situations...
115
Voted
DMSN
2004
ACM
15 years 8 months ago
2004
ACM
We consider the in-network computation of approximate “big picture” summaries in bandwidth-constrained sensor networks. First we review early work on computing the Haar wavele...