Forensic identification of relatives of individuals included in a database of DNA profiles

• 成果类型: Article
• 署名作者: Cavallini, David; Corradi, Fabio
• 署名单位: University of Florence
• 刊物名称: BIOMETRIKA
• ISSN/ISSBN: 0006-3444
• DOI: 10.1093/biomet/93.3.525
• 发表日期: 2006
• 页码: 525536
• 关键词: probabilistic expert-systems; likelihood ratios; suspect; inference

摘要

In this paper we evaluate the characteristics observed both on a crime sample and on individuals included in a database to assess the probability of alternative hypotheses concerning identification. The problem is first addressed by considering a generic characteristic and we demonstrate the problem via a computationally efficient Bayesian network. Then we turn our attention to a heritable DNA trait to show how to evaluate the hypotheses that some individuals, genetically related to the members of the database, are the donors of the crime sample. Then the network is extended to cope with many loci. Applications of the method are provided as well as details of computational requirements.