Journal Published Online: 01 March 1997
Volume 42, Issue 2

Using a Graphical Method to Assist the Evaluation of Complicated Patterns of Evidence



The forensic scientist often faces the task of interpreting patterns of evidence which involve many variables. Combining different items of evidence within a complex framework of circumstances requires logical powers of reasoning and this can be assisted by formal methods. We discuss one such method which, as has already been pointed out by Aitken and Gammerman (1), offers considerable potential for creating probabilistic expert systems to assist in evidence interpretation. In particular, we show how the method, which is based on a directed acyclic graph, enables dependencies between different aspects of the evidence to be considered. The discussion is based on an imaginary case example.

Author Information

Philip Dawid, A
University College London, UK
Evett, IW
Forensic Science Service, Birmingham, UK
Pages: 6
Price: $25.00
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Stock #: JFS14102J
ISSN: 0022-1198
DOI: 10.1520/JFS14102J