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ADC
2003
Springer
15 years 3 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,...
ANLP
1994
14 years 11 months ago
1994
We report on the results of a series of experiments with a prototype text retrieval system which uses relatively advanced natural language processing techniques in order to enhanc...
VLDB
1997
ACM
15 years 2 months ago
1997
ACM
The result size of a query that involves multiple attributes from the same relation depends on these attributes’ joint data distribution,i.e., the frequencies of all combination...
108
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PODS
2012
ACM
13 years 12 days ago
2012
ACM
We show that randomization can lead to significant improvements for a few fundamental problems in distributed tracking. Our basis is the count-tracking problem, where there are k...
104
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ACIIDS
2009
IEEE
15 years 3 months ago
2009
IEEE
— We consider the problem of processing exact results for sliding window joins over data streams with limited memory. Existing approaches deal with memory limitations by shedding...