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Kappa calculus and evidential strength: A note on Åqvist's logical theory of legal evidence

Kappa calculus and evidential strength: A note on Åqvist's logical theory of legal evidence

Shimony, Solomon Eyal and Nissan, Ephraim (2001) Kappa calculus and evidential strength: A note on Åqvist's logical theory of legal evidence. Artificial Intelligence and Law, 9 (2-3). pp. 153-163. ISSN 0924-8463 (Print), 1572-8382 (Online) (doi:10.1023/A:1017995916308)

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Abstract

Lennart Åqvist (1992) proposed a logical theory of legal evidence, based on the Bolding-Ekelöf of degrees of evidential strength. This paper reformulates Åqvist's model in terms of the probabilistic version of the kappa calculus. Proving its acceptability in the legal context is beyond the present scope, but the epistemological debate about Bayesian Law isclearly relevant. While the present model is a possible link to that lineof inquiry, we offer some considerations about the broader picture of thepotential of AI & Law in the evidentiary context. Whereas probabilisticreasoning is well-researched in AI, calculations about the threshold ofpersuasion in litigation, whatever their value, are just the tip of theiceberg. The bulk of the modeling desiderata is arguably elsewhere, if one isto ideally make the most of AI's distinctive contribution as envisaged forlegal evidence research.

Item Type: Article
Uncontrolled Keywords: Kappa calculus, Åqvist's logical theory, legal evidence
Subjects: K Law > K Law (General)
Q Science > QA Mathematics
Pre-2014 Departments: School of Computing & Mathematical Sciences
Related URLs:
Last Modified: 14 Oct 2016 09:00
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/512

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