An Abstract Presentation of Dialectical Explanations in Defeasible Argumentation.

ALEJANDRO J. GARCÍA; CARLOS I. CHESÑEVAR; NICOLÁS D. ROTSTEIN; GUILLERMO R. SIMARI

Tempe, USA

Workshop; First international workshop on Argumentation and Non-Monotonic Reasoning (ArgNMR 07); 2007

Abstract argumentation frameworks have played a major role as a way of understanding argument-based inference, resulting in different argument-based proof procedures.We will provide an abstract characterization of the warrant  construction in the context of Skeptical Argumentation Frameworks. Often in the literature an argument is regarded as an explanation as well as a form of support for a claim, and this argument is evaluated to decide if the claim is accepted. The concept of explanation has received attention from different areas in Artificial Intelligence, particulary in the Knowledge-Based Systems community. Only a few of them consider explanations in relation with argument systems. In this paper, we propose a type of explanation that attempts to fill this gap providing a perspective from the point of view of argumentation systems.