6004 search results - page 167 / 1201 » Parallelizing query optimization |
ICDE
2012
IEEE
12 years 21 days ago
2012
IEEE
Abstract—This paper revisits the classical problem of multiquery optimization in the context of RDF/SPARQL. We show that the techniques developed for relational and semi-structur...
SIGMOD
2003
ACM
14 years 10 months ago
2003
ACM
In decision support applications, the ability to provide fast approximate answers to aggregation queries is desirable. One commonly-used technique for approximate query answering ...
CIA
1998
Springer
14 years 2 months ago
1998
Springer
In a simple cooperative MAS model where a collection of "querying agents" can send queries to a collection of "information agents", we formalize the problem of ...
BDA
2000
13 years 11 months ago
2000
Due to the popularity of the XML data format, several query languages for XML have been proposed, specially devised to handle data whose structure is unknown, loose, or absent. Wh...
DLOG
2007
14 years 17 days ago
2007
Abstract. There has been an increased interest in recent years to incorporate uncertainty in Description Logics (DLs), and a number of proposals have been put forward for modeling ...