565 search results - page 108 / 113 » Multiple Range Query Optimization in Spatial Databases |
WSDM
2009
ACM
15 years 4 months ago
2009
ACM
There has been considerable past work on efficiently computing top k objects by aggregating information from multiple ranked lists of these objects. An important instance of this...
164
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VLDB
2007
ACM
15 years 9 months ago
2007
ACM
Estimating the cardinality (i.e. number of distinct elements) of an arbitrary set expression defined over multiple distributed streams is one of the most fundamental queries of in...
ICDE
2010
IEEE
15 years 9 months ago
2010
IEEE
Abstract-- Failures of any type are common in current datacenters. As data scales up, its availability becomes more complex, while different availability levels per application or ...
183
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GIS
2004
ACM
15 years 10 months ago
2004
ACM
Grid is a promising e-Science infrastructure that promotes and facilitates the sharing and collaboration in the use of distributed heterogeneous resources through Virtual Organiza...
VLDB
1997
ACM
15 years 1 months ago
1997
ACM
Query optimizers that explore a search space exhaustively using transformation rules usually apply all possible rules on each alternative, and stop when no new information is prod...