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A Parametrized Ranking-based Semantics for Persuasion

Abstract : In this paper we question the ability of the existant ranking semantics for argumentation to capture persuasion settings, emphasizing in particular the phenomena of protocatalepsis (the fact that it is often efficient to anticipate the counter-arguments of the audience), and of fading (the fact that long lines of argumentation become ineffective). It turns out that some widely accepted principles of ranking-based semantics are incompatible with a faithful treatment of these phenomena. We thus propose a parametrized semantics based on propagation of values, which allows to control the scope of arguments to be considered for evaluation. We investigate its properties (identifying in particular threshold values guaranteeing that some properties hold), and report experimental results showing that the family of rankings that may be returned have a high coherence rate.
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Contributor : Nicolas Maudet <>
Submitted on : Tuesday, November 28, 2017 - 11:17:19 AM
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Elise Bonzon, Jérôme Delobelle, Sébastien Konieczny, Nicolas Maudet. A Parametrized Ranking-based Semantics for Persuasion. 11th International Conference on Scalable Uncertainty Management (SUM 2017), Oct 2017, Grenade, Spain. pp.237-251, ⟨10.1007/978-3-319-67582-4_17⟩. ⟨hal-01650122⟩



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