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Square root biased sampling

Square root biased sampling is a sampling method proposed by William H. Press, a computer scientist and computational biologist, for use in airport screenings. It is the mathematically optimal compromise between simple random sampling and strong profiling that most quickly finds a rare malfeasor, given fixed screening resources.

History
Press developed square root biased sampling as a way to sample long sequences of DNA. An even earlier discovery was by Martin L. Shooman, who used square root biased sampling in a test apportionment model for software reliability. Press' later proposal to use square root biased sampling for airport security was published in 2009. However, use of this method presupposes that those doing the screening have accurate statistical information on who is more likely to be a security risk, which is not necessarily the case. ==See also==
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