2853 search results - page 113 / 571 » On the Efficiency of Provenance Queries |
283
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ICDE
2009
IEEE
16 years 8 months ago
2009
IEEE
Given a set of points P and a query point q, the reverse furthest neighbor (RFN) query fetches the set of points p P such that q is their furthest neighbor among all points in P {...
122
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MFDBS
1989
15 years 10 months ago
1989
One of the key problems when extending relational database query languages to include deductive capabilities, is to provide them with efficient methods for answering recursive que...
177
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DATESO
2010
15 years 4 months ago
2010
Abstract. Current XPath processors use direct approach to query evaluation which is quite inefficient in some cases and usually implemented serially. This may be a problem in case ...
309
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ICDE
2007
IEEE
16 years 7 months ago
2007
IEEE
We study the problem of answering queries posed on virtual views of XML documents, a problem commonly encountered when enforcing XML access control and integrating data. We approa...
156
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WWW
2009
ACM
16 years 7 months ago
2009
ACM
Sponsored search systems are tasked with matching queries to relevant advertisements. The current state-of-the-art matching algorithms expand the user's query using a variety...