3514 search results - page 385 / 703 » On Moving Object Queries |
182
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ESCIENCE
2007
IEEE
15 years 10 months ago
2007
IEEE
Data sources, storage, computing resources and services are entities on Grids that require mechanisms for publication and lookup. A discovery service relies on efficient lookup to...
157
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ICDT
1995
ACM
15 years 10 months ago
1995
ACM
A tuple t1 of relation R subsumes tuple t2 of R, with respect to a query Q if for every database, tuple t1 derives all, and possibly more, answers to query Q than derived by tuple ...
210
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ESA
2008
Springer
15 years 8 months ago
2008
Springer
Abstract. We consider approximate nearest neighbor searching in metric spaces of constant doubling dimension. More formally, we are given a set S of n points and an error bound &g...
177
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DASFAA
2010
IEEE
15 years 7 months ago
2010
IEEE
Achieving data security over cooperating web services is becoming a reality, but existing XML access control architectures do not consider this federated service computing. In this...
189
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ER
2010
Springer
15 years 5 months ago
2010
Springer
Multidimensional models are at the core of data warehouse systems, since they allow decision makers to early define the relevant information and queries that are required to satis...