14248 search results - page 157 / 2850 » Queries |
106
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HICSS
2003
IEEE
15 years 7 months ago
2003
IEEE
We apply multiple query optimization to batches of pull (on-demand) requests in a mobile database system. The resulting view can answer several queries at once, and it is broadcas...
ICMCS
2000
IEEE
15 years 7 months ago
2000
IEEE
A multi-clip query requests multiple video clips. In this paper we address the multi-clip query optimization problem. We propose a new heuristics called Restricted Search Interval...
101
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ECAI
2000
Springer
15 years 6 months ago
2000
Springer
In this paper, we study unsatisfiable queries posed to a mediator in an information integration system and expressed in the logical formalism of the information integration system...
119
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FOCS
1998
IEEE
15 years 6 months ago
1998
IEEE
It is known that there exists a PCP characterization of NP where the verifier makes 3 queries and has a onesided error that is bounded away from 1; and also that 2 queries do not ...
135
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DLOG
2008
15 years 4 months ago
2008
We have shown recently that, in extensions of ALC that involve inverse roles, conjunctive query answering is harder than satisfiability: it is 2-ExpTime-complete in general and NEx...