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Approximate word matches between two random sequences

Burden, Conrad J; Kantorovitz, Miriam R; Wilson, Susan R

Description

Given two sequences over a finite alphabet L, the D₂ statistic is the number of m-letter word matches between the two sequences. This statistic is used in bioinformatics for expressed sequence tag database searches. Here we study a generalization of the D₂ statistic in the context of DNA sequences, under the assumption of strand symmetric Bernoulli text. For k<m, we look at the count of m-letter word matches with up to k mismatches. For this statistic, we compute the expectation, give...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/100208
Source: The Annals of Applied Probability
DOI: 10.1214/07-AAP452

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