2223 search results - page 52 / 445 » Query Optimization in an OODBMS |
SIGMOD
2004
ACM
15 years 12 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...
134
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SIGIR
2012
ACM
13 years 2 months ago
2012
ACM
We propose a mathematical framework for query selection as a mechanism for reducing the cost of constructing information retrieval test collections. In particular, our mathematica...
VLDB
2002
ACM
14 years 11 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...
129
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ICDE
2012
IEEE
13 years 2 months ago
2012
IEEE
—Shortest distance query between two nodes is a fundamental operation in large-scale networks. Most existing methods in the literature take a landmark embedding approach, which s...
ICDE
2000
IEEE
15 years 4 months ago
2000
IEEE
We consider an architecture of mediators and wrappers for Internet accessible WebSources of limited query capability. Each call to a source is a WebSource Implementation (WSI) and...