5166 search results - page 147 / 1034 » Web Query Optimizer |
135
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CNSR
2007
IEEE
15 years 11 months ago
2007
IEEE
In this paper, conceptual frequency rate, a new frequency definition suitable for query stream mining, is introduced. An online single-pass algorithm called OFSD (Online Frequent...
136
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SIGMOD
2004
ACM
16 years 5 months ago
2004
ACM
Ranking is an important property that needs to be fully supported by current relational query engines. Recently, several rank-join query operators have been proposed based on rank...
143
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VLDB
2002
ACM
15 years 4 months ago
2002
ACM
The cost of a query plan depends on many parameters, such as predicate selectivities and available memory, whose values may not be known at optimization time. Parametric query opt...
158
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PPSWR
2005
Springer
15 years 10 months ago
2005
Springer
Metadata processing is recognized as a central challenge for database research in the next decade. Already, novel desktop data management and search applications (cf. Apple’s Spo...
166
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ECAI
2004
Springer
15 years 8 months ago
2004
Springer
We present a user interface, the OntoRefiner1 system, for helping the user to navigate numerous retrieved documents after a search querying a semantic portal which integrates a ver...