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    SIGMOD
    1996
    ACM
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    Bifocal Sampling for Skew-Resistant Join Size Estimation
    15 years 1 months ago
    Bifocal Sampling for Skew-Resistant Join Size Estimation
    Download  theory.stanford.edu
    This paper introduces bifocal sampling, a new technique for estimating the size of an equi-join of two relations. Bifocal sampling classi es tuples in each relation into two group...
    Sumit Ganguly, Phillip B. Gibbons, Yossi Matias, A...
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