An Abstract Presentation of Dialectical Explanations in Defeasible Argumentation

ALEJANDRO GARCÍA; CARLOS CHESÑEVAR; NICOLÁS ROTSTEIN; GUILLERMO SIMARI,

Tempe, Arizona, USA

Workshop; 1st Intl. Workshop on Argumentation and Nonmonotonic Reasoning (ArgNMR 2007),; 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.