5221 search results - page 847 / 1045 » An On-line Problem Database |
162
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VLDB
2005
ACM
16 years 3 hour ago
2005
ACM
Cost-based query optimizers need to estimate the selectivity of conjunctive predicates when comparing alternative query execution plans. To this end, advanced optimizers use multi...
160
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KDD
2004
ACM
15 years 12 months ago
2004
ACM
Clustering time series is a problem that has applications in a wide variety of fields, and has recently attracted a large amount of research. In this paper we focus on clustering...
159
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VLDB
2004
ACM
15 years 12 months ago
2004
ACM
Today’s world of increasingly dynamic computing environments naturally results in more and more data being available as fast streams. Applications such as stock market analysis,...
189
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VLDB
2004
ACM
15 years 12 months ago
2004
ACM
It is well established that bitmap indices are efficient for read-only attributes with low attribute cardinalities. For an attribute with a high cardinality, the size of the bitma...
209
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ADC
2003
Springer
15 years 11 months ago
2003
Springer
Discovering association rules that identify relationships among sets of items is an important problem in data mining. Finding frequent item sets is computationally the most expens...