565 search results - page 40 / 113 » Multiple Range Query Optimization in Spatial Databases |
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SSD
2007
Springer
15 years 3 months ago
2007
Springer
In the k-medoid problem, given a dataset P, we are asked to choose k points in P as the medoids. The optimal medoid set minimizes the average Euclidean distance between the points ...
173
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SIGMOD
2008
ACM
15 years 9 months ago
2008
ACM
Text documents often embed data that is structured in nature. This structured data is increasingly exposed using information extraction systems, which generate structured relation...
CIKM
2006
Springer
14 years 11 months ago
2006
Springer
Due to the resource limitation in the data stream environment, it has been reported that answering user queries according to the wavelet synopsis of a stream is an essential abili...
APWEB
2005
Springer
15 years 3 months ago
2005
Springer
Summarizing topological relations is fundamental to many spatial applications including spatial query optimization. In this paper, we examine the selectivity estimation for range w...
CIKM
2008
Springer
14 years 11 months ago
2008
Springer
Query processing techniques for XML data have focused mainly on tree-pattern queries (TPQs). However, the need for querying XML data sources whose structure is very complex or not...