7810 search results - page 1235 / 1562 » Evaluating Image Retrieval |
274
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ICDE
2004
IEEE
16 years 8 months ago
2004
IEEE
Given two sets of points P and Q, a group nearest neighbor (GNN) query retrieves the point(s) of P with the smallest sum of distances to all points in Q. Consider, for instance, t...
421
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ICDE
2000
IEEE
16 years 8 months ago
2000
IEEE
In high-dimensional and complex metric spaces, determining the nearest neighbor (NN) of a query object ? can be a very expensive task, because of the poor partitioning operated by...
270
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GIS
2007
ACM
16 years 7 months ago
2007
ACM
The increasingly popular GPS technology and the growing amount of trajectory data it generates create the need for developing applications that efficiently store and query traject...
265
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GIS
2008
ACM
16 years 7 months ago
2008
ACM
In this paper, we consider the following scenario: a set of mobile objects continuously track their positions in a road network and are able to communicate with a central server. ...
299
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GIS
2009
ACM
16 years 7 months ago
2009
ACM
The k-anonymity technique is widely used to provide location privacy protection for accessing location-based services (LBS), i.e., the exact location of a query initiator is cloak...