1559 search results - page 142 / 312 » Evaluation of Query Performance Prediction Methods by Range |
139
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IJPRAI
2006
15 years 4 months ago
2006
Many real life problems are characterized by the structure of data derived from multiple sensors. The sensors may be independent, yet their information considers the same entities...
241
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ICDE
2008
IEEE
16 years 5 months ago
2008
IEEE
Abstract-- We present COLR-Tree, an abstraction layer designed to support efficient spatio-temporal queries on live data gathered from a large collection of sensors. We use COLR-Tr...
136
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VLDB
2001
ACM
15 years 9 months ago
2001
ACM
Estimating the number of distinct values is a wellstudied problem, due to its frequent occurrence in queries and its importance in selecting good query plans. Previous work has sh...
132
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VLDB
1997
ACM
15 years 8 months ago
1997
ACM
In this paper we describe novel techniques that make it possible to build an industrial-strength tool for automating the choice of indexes in the physical design of a SQL database...
149
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BMCBI
2005
15 years 4 months ago
2005
Background: The large gap between the number of protein sequences in databases and the number of functionally characterized proteins calls for the development of a fast computatio...