2853 search results - page 154 / 571 » On the Efficiency of Provenance Queries |
155
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DASFAA
2004
IEEE
15 years 10 months ago
2004
IEEE
Abstract. We consider the problem of accurately estimating the number of approximate XML answers for a given query, and propose an efficient method that (1) accurately computes sel...
309
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GIS
2005
ACM
16 years 7 months ago
2005
ACM
An interesting issue in moving objects databases is to find similar trajectories of moving objects. Previous work on this topic focuses on movement patterns (trajectories with tim...
279
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GIS
2004
ACM
16 years 7 months ago
2004
ACM
The advances in wireless communication and decreasing costs of mobile devices have enabled users to access desired information at any time. Coupled with positioning technologies l...
267
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SIGMOD
2006
ACM
16 years 6 months ago
2006
ACM
The reverse k-nearest neighbor (RkNN) problem, i.e. finding all objects in a data set the k-nearest neighbors of which include a specified query object, is a generalization of the...
179
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EDBT
2009
ACM
15 years 10 months ago
2009
ACM
A skyline query returns a set of objects that are not dominated by other objects. An object is said to dominate another if it is closer to the query than the latter on all factors...