2217 search results - page 242 / 444 » Rank-aware Query Optimization |
146
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ICALP
2005
Springer
16 years 12 hour ago
2005
Springer
We consider the problem of testing the commutativity of a black-box group specified by its k generators. The complexity (in terms of k) of this problem was first considered by Pa...
165
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VLDB
2004
ACM
15 years 12 months ago
2004
ACM
Histograms and Wavelet synopses provide useful tools in query optimization and approximate query answering. Traditional histogram construction algorithms, such as V-Optimal, optim...
228
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CVPR
2011
IEEE
15 years 4 months ago
2011
IEEE
Active learning techniques have gained popularity in reducing human effort to annotate data instances for inducing a classifier. When faced with large quantities of unlabeled dat...
223
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EDBT
2011
ACM
14 years 10 months ago
2011
ACM
Data integration systems offer users a uniform interface to a set of data sources. Previous work has typically assumed that the data sources are independent of each other; however...
272
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SIGMOD
2009
ACM
16 years 6 months ago
2009
ACM
SQL tuning--the attempt to improve a poorly-performing execution plan produced by the database query optimizer-is a critical aspect of database performance tuning. Ironically, as ...