10088 search results - page 1888 / 2018 » Queries and Computation on the Web |
115
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EDBT
2008
ACM
16 years 1 months ago
2008
ACM
The top-k retrieval problem requires finding k objects most similar to a given query object. Similarities between objects are most often computed as aggregated similarities of the...
134
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CVPR
2010
IEEE
15 years 9 months ago
2010
IEEE
A novel method for crowd flow modeling and anomaly detection is proposed for both coherent and incoherent scenes. The novelty is revealed in three aspects. First, it is a unique ut...
112
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SAC
2010
ACM
15 years 8 months ago
2010
ACM
In GIS and spatial databases, cardinal directions are frequently used as selection and join criteria in query languages. However, most cardinal direction models are only able to h...
109
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SP
2007
IEEE
15 years 7 months ago
2007
IEEE
Since 1995, much work has been done creating protocols for private information retrieval (PIR). Many variants of the basic PIR model have been proposed, including such modificati...
146
Voted
IPSN
2007
Springer
15 years 7 months ago
2007
Springer
In this paper we propose a lightweight algorithm for constructing multi-resolution data representations for sensor networks. We compute, at each sensor node u, O(log n) aggregates...