HYPO’S legacy: introduction to the virtual special issue

Artificial Intelligence and Law 25 (2):205-250 (2017)
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This paper is an introduction to a virtual special issue of AI and Law exploring the legacy of the influential HYPO system of Rissland and Ashley. The papers included are: Arguments and cases: An inevitable intertwining, BankXX: Supporting legal arguments through heuristic retrieval, Modelling reasoning with precedents in a formal dialogue Game, A note on dimensions and factors, An empirical investigation of reasoning with legal cases through theory construction and application, Automatically classifying case texts and predicting outcomes, A factor-based definition of precedential constraint and An improved factor based approach to precedential constraint. After describing HYPO, in this introduction to the special issue I look at various aspects of its influence on AI and Law: the developments led by Rissland at Amherst; the developments led by Ashley in Pittsburgh; the expression of these ideas in terms of rule based systems, and their subsequent formalisation; value based theories, which were inspired by a critique of HYPO; and contemporary approaches which revive the idea of dimensions.



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The Uses of Argument.Stephen E. Toulmin - 1958 - Cambridge University Press.
Argumentation Schemes.Douglas Walton, Chris Reed & Fabrizio Macagno - 2008 - Cambridge and New York: Cambridge University Press.
Fallacies.Charles Leonard Hamblin - 1970 - London, England: Vale Press.
The New Rhetoric: A Treatise on Argumentation.Chaïm Perelman & Lucie Olbrechts-Tyteca - 1969 - Notre Dame, IN, USA: Notre Dame University Press.
Argumentation Schemes.Douglas Walton, Christopher Reed & Fabrizio Macagno - 2008 - Cambridge and New York: Cambridge University Press.

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