511 search results - page 53 / 103 » Approximate Selection Queries over Imprecise Data |
178
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AMW
2010
15 years 7 months ago
2010
In this work we present in-network techniques to improve the efficiency of spatial aggregate queries. Such queries are very common in a sensornet setting, demanding more targeted t...
180
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ICASSP
2009
IEEE
15 years 10 months ago
2009
IEEE
Optimized opportunistic multicast scheduling (OMS) has been studied previously by the authors for homogeneous cellular networks, where the problem of efficiently transmitting a co...
145
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ICC
2007
IEEE
16 years 12 days ago
2007
IEEE
— This paper addresses soft estimation of time-varying frequency selective channels using Kalman smoothing. The proposed estimator uses soft extrinsic information provided by a c...
164
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WWW
2002
ACM
16 years 6 months ago
2002
ACM
Query expansion has long been suggested as an effective way to resolve the short query and word mismatching problems. A number of query expansion methods have been proposed in tra...
159
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VLDB
2005
ACM
15 years 11 months ago
2005
ACM
This paper addresses the efficient processing of top-k queries in wide-area distributed data repositories where the index lists for the attribute values (or text terms) of a query...