3471 search results - page 347 / 695 » Data Stream Query Processing |
157
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JUCS
2010
14 years 10 months ago
2010
: We develop and study the concept of dataflow process networks as used for example by Kahn to suit exact computation over data types related to real numbers, such as continuous fu...
113
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CIKM
1999
Springer
15 years 7 months ago
1999
Springer
On-line analytical processing (OLAP) requires e cient processing of complex decision support queries over very large databases. It is well accepted that pre-computed data cubes ca...
218
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ICDE
2009
IEEE
16 years 4 months ago
2009
IEEE
In uncertain and probabilistic databases, confidence values (or probabilities) are associated with each data item. Confidence values are assigned to query results based on combinin...
136
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ADC
2003
Springer
15 years 8 months ago
2003
Springer
Selectivity estimation of queries not only provides useful information to the query processing optimization but also may give users a preview of processing results. In this paper,...
131
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DEXA
2008
Springer
15 years 4 months ago
2008
Springer
The query performance for tracing tags depends upon the distribution of tag trajectories in the data space. We examine a more efficient representation of tag trajectories by means ...