556 search results - page 52 / 112 » Evaluation of probabilistic queries in moving objects databa... |
134
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CIKM
2009
Springer
15 years 8 months ago
2009
Springer
We study the problem of continuous monitoring of top-k queries over multiple non-synchronized streams. Assuming a sliding window model, this general problem has been a well addres...
106
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TOOLS
1999
IEEE
15 years 5 months ago
1999
IEEE
Path traversals have been recognized as one of the strengths of object-oriented query processing as object retrieval can be carried out through pointer navigation. Apart from path...
107
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EDBT
2004
ACM
15 years 6 months ago
2004
ACM
Abstract. We present a cost-based adaptive clustering method to improve average performance of spatial queries (intersection, containment, enclosure queries) over large collections...
139
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SSDBM
2009
IEEE
15 years 8 months ago
2009
IEEE
Scientific experiments produce large volumes of data represented as complex objects that describe independent events such as particle collisions. Scientific analyses can be express...
199
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GIS
2003
ACM
16 years 2 months ago
2003
ACM
With wireless communications and geo-positioning being widely available, it becomes possible to offer new e-services that provide mobile users with information about other mobile ...