Use of Bayesian networks in forensic soil casework |
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Institution: | 1. Netherlands Forensic Institute, P.O. Box 24044, 2490 AA The Hague, The Netherlands;2. Utrecht University, Department of Physical Geography, P.O. Box 80115, 3508 TC Utrecht, The Netherlands;3. Korteweg-de Vries Instituut, Faculty of Science, P.O. Box 94248, 1090 GE Amsterdam, The Netherlands |
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Abstract: | Forensic soil comparisons can be of high evidential value in a forensic case, but become complex when multiple methods and factors are considered. Bayesian networks are well suited to support forensic practitioners in complex casework. This study discusses the structure of a Bayesian network, elaborates on the in- and output data and evaluates two examples, one using source level propositions and one using activity level propositions. These examples can be applied as a template to construct a case specific network and can be used to assess sensitivity of the target output to different factors and identify avenues for research. |
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Keywords: | Soil comparison Bayesian network Evaluate propositions Activity level Source level Palynology Elemental composition Distance measure |
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