2514 search results - page 64 / 503 » On the Computation of Approximations of Database Queries |
164
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ACMIDC
2010
15 years 7 months ago
2010
This work is part of a research targeted at experimenting the use of physical artifacts for the retrieval of multimedia information. Tangible interfaces
176
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COOPIS
2004
IEEE
15 years 10 months ago
2004
IEEE
Querying and integrating sources of structured data from the Web in most cases requires similarity-based concepts to deal with data level conflicts. This is due to the often errone...
143
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FOCS
1993
IEEE
15 years 10 months ago
1993
IEEE
This paper investigates the computational complexity of approximating several NPoptimization problems using the number of queries to an NP oracle as a complexity measure. The resu...
159
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EDBT
2008
ACM
16 years 6 months ago
2008
ACM
In this paper, we propose a bitmap approach for efficient subspace skyline computation in a distributed setting. Our approach computes extended skylines which have been shown to i...
195
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DBPL
2001
Springer
15 years 10 months ago
2001
Springer
Abstract. We address a fundamental question concerning spatio-temporal database systems: “What are exactly spatio-temporal queries?” We define spatio-temporal queries to be co...