Towards a Bayesian evaluation of features in questioned handwritten signatures

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Download: Gaborini_etal_2017.pdf (3212.47 [Ko])
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Serval ID
serval:BIB_8CCF8F81219E
Type
Article: article from journal or magazin.
Collection
Publications
Title
Towards a Bayesian evaluation of features in questioned handwritten signatures
Journal
Science & justice
Author(s)
Gaborini L., Biedermann A., Taroni  F.
ISSN
1355-0306 (;1876-4452)
Publication state
Published
Issued date
2017
Peer-reviewed
Oui
Volume
57
Number
3
Pages
209-220
Language
english
Abstract
In this work, we propose the construction of a evaluative framework for supporting experts in questioned signature examinations. Through the use of Bayesian networks, we envision to quantify the probative value of well defined measurements performed on questioned signatures, in a way that is both formalised and part of a coherent approach to evaluation.
At the current stage, our project is explorative, focusing on the broad range of aspects that relate to comparative signature examinations. The goal is to identify writing features which are both highly discriminant, and easy for forensic examiners to detect. We also seek for a balance between case-specific features and characteristics which can be measured in the vast majority of signatures. Care is also taken at preserving the interpretability at every step of the reasoning process.
This paves the way for future work, which will aim at merging the different contributions to a single probabilistic measure of strength of evidence using Bayesian networks.
Keywords
Bayesian networks, signature evidence, fourier descriptors, multivariate likelihood ratio
Web of science
Open Access
Yes
Create date
28/06/2017 9:53
Last modification date
20/08/2019 15:51
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