Bottom-m sketches streaming algorithm (streaming Cardinality Estimation)

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Time Complexity

$O(N)$

Space Complexity

$O(m)$ words

(only keep track of m minimum values. also assuming hash function requires O(1) space)

Description

Approximate?

Approximate

Approximation Factor:

Randomized?

Yes,

Model of Computation

Word RAM

Year

1980

Reference

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