3514 search results - page 167 / 703 » On Moving Object Queries |
257
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SSD
2009
Springer
16 years 18 days ago
2009
Springer
The range nearest-neighbor (NN) query is an important query type in location-based services, as it can be applied to the case that an NN query has a spatial region, instead of a lo...
215
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ICDE
2008
IEEE
16 years 7 months ago
2008
IEEE
In a city, protecting units like police cars move around and protect places such as banks and residential buildings. Different places may have different requirements in how many p...
173
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VLDB
1995
ACM
15 years 9 months ago
1995
ACM
Efficient processing of aggregation queries is essential for decision support applications. This paper describes a class of query transformations, called eager aggregation and lat...
163
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SSD
2005
Springer
15 years 11 months ago
2005
Springer
We study the problem of answering spatial queries in databases where objects exist with some uncertainty and they are associated with an existential probability. The goal of a thre...
243
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VLDB
2002
ACM
16 years 6 months ago
2002
ACM
We propose a new data structure to search in metric spaces. A metric space is formed by a collection of objects and a distance function de ned among them, which satis es the trian...