2514 search results - page 250 / 503 » On the Computation of Approximations of Database Queries |
236
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EDBT
2011
ACM
14 years 10 months ago
2011
ACM
Data integration systems offer users a uniform interface to a set of data sources. Previous work has typically assumed that the data sources are independent of each other; however...
173
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ICDE
2007
IEEE
15 years 10 months ago
2007
IEEE
The problem of trajectory similarity in moving object databases is a relatively new topic in the spatial and spatiotemporal database literature. Existing work focuses on the spati...
175
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SAC
2008
ACM
15 years 6 months ago
2008
ACM
Modern applications requiring spatial network processing pose many interesting query optimization challenges. In many cases, query processing depends on the corresponding graph si...
198
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ISB
2002
15 years 6 months ago
2002
Data Mining and Knowledge Discovery techniques proved to be efficient tools for variety of complex tasks in biology including DNA research. This paper presents implementation of th...
178
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SIGECOM
2008
ACM
15 years 6 months ago
2008
ACM
We provide tight information-theoretic lower bounds for the welfare maximization problem in combinatorial auctions. In this problem, the goal is to partition m items among k bidde...