6004 search results - page 33 / 1201 » Parallelizing query optimization |
IPPS
2007
IEEE
14 years 3 months ago
2007
IEEE
Peer-to-peer file-sharing systems suffer from the overspecification of query results due to the fact that queries are conjunctive and the descriptions of shared files are sparse. ...
LCPC
1997
Springer
14 years 25 days ago
1997
Springer
SIGMOD
2002
ACM
14 years 8 months ago
2002
ACM
This paper addresses the problem of evaluating ranked top-? queries with expensive predicates. As major DBMSs now all support expensive user-defined predicates for Boolean queries...
ICPADS
2005
IEEE
14 years 2 months ago
2005
IEEE
Data warehouses store large volumes of data according to a multidimensional model with dimensions representing different axes of analysis. OLAP systems (OnLine Analytical Processi...
SEMWEB
2010
Springer
13 years 6 months ago
2010
Springer
We study the problem of SPARQL query optimization on top of distributed hash tables. Existing works on SPARQL query processing in such environments have never been implemented in a...