3969 search results - page 269 / 794 » Query Processing Using Ontologies |
226
Voted
ICDE
2008
IEEE
16 years 5 months ago
2008
IEEE
In this paper we address the problem of minimizing the response time of a multi-way join query using pipelined (inter-operator) parallelism, in a parallel or a distributed environ...
159
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CIDR
2007
15 years 5 months ago
2007
We present a “black-box” approach to estimating query cardinality that has no knowledge of query execution plans and data distribution, yet provides accurate estimates. It doe...
120
Voted
WWW
2008
ACM
16 years 4 months ago
2008
ACM
Query result caching is an important mechanism for search engine efficiency. In this study, we first review several query features that are used to determine the contents of a sta...
143
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CORR
1999
Springer
15 years 3 months ago
1999
Springer
A query routing broker is a software agent that determines from a large set of accessing information sources the ones most relevant to a user's information need. As the numbe...
254
Voted
ICDE
2003
IEEE
16 years 5 months ago
2003
IEEE
XKeyword provides efficient keyword proximity queries on large XML graph databases. A query is simply a list of keywords and does not require any schema or query language knowledg...