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Experimental results on data analysis algorithms for extracting and interpreting edge feature data for duct tape and textile physical fit examinations.
Prusinowski, Meghan; Tavadze, Pedram; Andrews, Zachary; Lang, Logan; Pulivendhan, Divyanjali; Neumann, Cedric; Romero, Aldo H; Trejos, Tatiana.
Afiliación
  • Prusinowski M; Department of Forensic and Investigative Science, West Virginia University, Morgantown, West Virginia, USA.
  • Tavadze P; Department of Forensic and Investigative Science, West Virginia University, Morgantown, West Virginia, USA.
  • Andrews Z; Department of Physics and Astronomy, West Virginia University, Morgantown, West Virginia, USA.
  • Lang L; Department of Forensic and Investigative Science, West Virginia University, Morgantown, West Virginia, USA.
  • Pulivendhan D; Department of Physics and Astronomy, West Virginia University, Morgantown, West Virginia, USA.
  • Neumann C; Department of Forensic and Investigative Science, West Virginia University, Morgantown, West Virginia, USA.
  • Romero AH; Battelle Memorial Institute, Columbus, Ohio, USA.
  • Trejos T; Department of Physics and Astronomy, West Virginia University, Morgantown, West Virginia, USA.
J Forensic Sci ; 69(2): 498-514, 2024 Mar.
Article en En | MEDLINE | ID: mdl-38111135
ABSTRACT
A physical fit is an important observation that can result from the forensic analysis of trace evidence as it conveys a high degree of association between two items. However, physical fit examinations can be time-consuming, and potential bias from analysts may affect judgment. To overcome these shortcomings, a data analysis algorithm using mutual information and a decision tree has been developed to support practitioners in interpreting the evidence. We created these tools using data obtained from physical fit examinations of duct tape and textiles analyzed in previous studies, along with the reasoning behind the analysts' decisions. The relative feature importance is described by material type, enhancing the knowledge base in this field. Compared with the human analysis, the algorithms provided accuracies above 90%, with an improved rate of true positives for most duct tape subsets. Conversely, false positives were observed in high-quality scissor cut (HQ-HT-S) duct tape and textiles. As such, it is advised to use these algorithms in tandem with human analysis. Furthermore, the study evaluated the accuracy of physical fits when only partial sample lengths are available. The results of this investigation indicated that acceptable accuracies for correctly identifying true fits and non-fits occurred when at least 35% of a sample length was present. However, lower accuracies were observed for samples prone to stretching or distortion. Therefore, the models described here can provide a valuable supplementary tool but should not be the sole means of evaluating samples.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Forensic Sci Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Forensic Sci Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos