Article,

Collision probability between sets of random variables

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Statistics & Probability Letters, 64 (3): 249 - 254 (2003)
DOI: 10.1016/S0167-7152(03)00168-8

Abstract

We develop the collision probability for a canonical collision problem using a counting procedure based on signed graphs. The result involves Stirling numbers of the second kind and is straightforward to evaluate. Characteristics are discussed in the context of a generalized birthday problem and error of the standard binomial approximation is quantified. The basic solution for two sets is also extended to an arbitrary number of sets.

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