Completeness and robustness properties of min-wise independent permutations
Completeness and robustness properties of min-wise independent permutations
复制标题
最小独立排列的完整性和鲁棒性
DOI:
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发表时间:
1999
期刊:
影响因子:
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通讯作者:
M. Mitzenmacher
中科院分区:
文献类型:
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作者:
A. Broder;M. Mitzenmacher
We provide several new results related to the concept of min-wise independence. Our main result is that any randomized sampling scheme for the relative intersection of sets based on testing equality of samples yields an equivalent min-wise independent family. Thus, in a certain sense, min-wise independent families are complete for this type of estimation. We also discuss the notion of robustness, a concept extending min-wise independence to allow more efficient use of it in practice. A surprising result arising from our consideration of robustness is that under a random permutation from a min-wise independent family, any element of a fixed set has an equal chance to get any rank in the image of the set, not only the minimum as required by definition.