2114 search results - page 217 / 423 » Performance Evaluation on a Real-Time Database |
232
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GIS
2007
ACM
16 years 5 months ago
2007
ACM
Continuous spatial queries posted within an environment of moving objects produce as their results a time-varying set of objects. In the most ambitious case both queries and data ...
149
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CLEF
2007
Springer
15 years 10 months ago
2007
Springer
This paper describes the participation of MIRACLE research consortium at the Query Parsing task of GeoCLEF 2007. Our system is composed of three main modules. First, the Named Geo...
225
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VLDB
2004
ACM
16 years 4 months ago
2004
ACM
In this paper, we propose a new tunable index scheme, called iMinMax(), that maps points in highdimensional spaces to single-dimensional values determined by their maximum or minim...
146
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VLDB
2005
ACM
15 years 9 months ago
2005
ACM
Nested iteration is an important technique for query evaluation. It is the default way of executing nested subqueries in SQL. Although decorrelation often results in cheaper non-n...
114
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VLDB
2004
ACM
15 years 9 months ago
2004
ACM
Web spam pages use various techniques to achieve higher-than-deserved rankings in a search engine’s results. While human experts can identify spam, it is too expensive to manual...