2724 search results - page 333 / 545 » Optimizing Queries on Files |
233
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ICDE
2005
IEEE
16 years 5 months ago
2005
IEEE
Index structures are designed to optimize search performance, while at the same time supporting efficient data updates. Although not explicit, existing index structures are typica...
138
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ISCSCT
2008
IEEE
15 years 10 months ago
2008
IEEE
—Relevance feedback(RF) has been proved to be an effective way to improve the precision and recall of 3D model retrieval. However, the existing RF approaches do not consider whic...
121
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DBPL
2007
Springer
15 years 10 months ago
2007
Springer
The widespread adoption of XML has led to programming languages that support XML as a first class construct. In this paper, we present a method for analyzing and optimizing impera...
139
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COMPGEOM
2006
ACM
15 years 10 months ago
2006
ACM
This paper examines the computation of the Voronoi diagram of a set of ellipses in the Euclidean plane. We propose the first complete algorithms, under the exact computation para...
128
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VLDB
2004
ACM
15 years 9 months ago
2004
ACM
When query optimizers erroneously assume that database columns are statistically independent, they can underestimate the selectivities of conjunctive predicates by orders of magni...