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Chemometrics comes to court: evidence evaluation of chem–bio threat agent attacks
Totalförsvarets Forskningsinstitut, FOI.
Linköping University, Department of Computer and Information Science, Statistics. Linköping University, Faculty of Arts and Sciences. Polismyndigheten - Nationellt tForensiskt Centrum.
Totalförsvarets Forskningsinstitut, FOI.
2015 (English)In: Journal of Chemometrics, ISSN 0886-9383, E-ISSN 1099-128X, Vol. 29, no 5, 267-276 p.Article in journal (Refereed) Published
Abstract [en]

Forensic statistics is a well-established scientific field whose purpose is to statistically analyze evidence in order to support legal decisions. It traditionally relies on methods that assume small numbers of independent variables and multiple samples. Unfortunately, such methods are less applicable when dealing with highly correlated multivariate data sets such as those generated by emerging high throughput analytical technologies. Chemometrics is a field that has a wealth of methods for the analysis of such complex data sets, so it would be desirable to combine the two fields in order to identify best practices for forensic statistics in the future. This paper provides a brief introduction to forensic statistics and describes how chemometrics could be integrated with its established methods to improve the evaluation of evidence in court.

The paper describes how statistics and chemometrics can be integrated, by analyzing a previous know forensic data set composed of bacterial communities from fingerprints. The presented strategy can be applied in cases where chemical and biological threat agents have been illegally disposed.

Place, publisher, year, edition, pages
John Wiley & Sons, 2015. Vol. 29, no 5, 267-276 p.
Keyword [en]
evidence evaluation, likelihood ratio, forensics, chemometrics, Bayes factor, correlated variables
National Category
Analytical Chemistry Bioinformatics and Systems Biology Probability Theory and Statistics Law and Society
Identifiers
URN: urn:nbn:se:liu:diva-118566DOI: 10.1002/cem.2699OAI: oai:DiVA.org:liu-118566DiVA: diva2:815514
Funder
Swedish Civil Contingencies Agency
Available from: 2015-06-01 Created: 2015-06-01 Last updated: 2015-06-01

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