The Evaluation of Fibre Transfer Evidence in Forensic Science: A Case Study in Statistical Modelling

J. C. Wakefield, A. M. Skene, A. F. M. Smith and I. W. Evett

Journal of the Royal Statistical Society Series C, 1991, vol. 40, issue 3, 461-476

Abstract: Frequently, when a crime is committed, fibres are left at the scene. This paper examines the modelling aspects of evaluating the evidential content of such fibres by using a Bayesian approach. Inferences are made via the likelihood ratio, derived from bivariate colour measurements. Modelling the distribution of colour within a particular garment is discussed in detail. In addition, a large database allows an empirical prior distribution to be incorporated, utilizing kernel density estimation. Data from actual casework are analysed.

Date: 1991
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Persistent link: https://EconPapers.repec.org/RePEc:bla:jorssc:v:40:y:1991:i:3:p:461-476

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