Quantitative Assessment of Handwriting Evidence: The Value of the Shape of the Letter "A"

Détails

ID Serval
serval:BIB_7B2C9612D3B1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Quantitative Assessment of Handwriting Evidence: The Value of the Shape of the Letter "A"
Périodique
Journal of Forensic Document Examination
Auteur(s)
Marquis R., Bozza S., Schmittbuhl M., Taroni F.
ISSN
0895-0849
Statut éditorial
Publié
Date de publication
2011
Peer-reviewed
Oui
Volume
21
Pages
17-22
Langue
anglais
Résumé
To provide a quantitative support to the handwriting evidence evaluation, a new method was developed through the computation of a likelihood ratio based on a Bayesian approach. In the present paper, the methodology is briefly described and applied to data collected within a simulated case of a threatening letter. Fourier descriptors are used to characterise the shape of loops of handwritten characters "a" of the true writer of the threatening letter, and: 1) with reference characters "a" of the true writer of the threatening letter, and then 2) with characters "a" of a writer who did not write the threatening letter. The findings support that the probabilistic methodology correctly supports either the hypothesis of authorship or the alternative hypothesis. Further developments will enable the handwriting examiner to use this methodology as a helpful assistance to assess the strength of evidence in handwriting casework.
Mots-clé
Handwriting, Fourier descriptors, Evidence evaluation, Likelihood ratio.
Création de la notice
21/09/2011 13:54
Dernière modification de la notice
03/03/2018 18:35
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