An Abstract Presentation of Dialectical Explanations in Defeasible Argumentation

Abstract argumentation frameworks have played a major role as a way of understanding argument-based inference, resulting in different a gument-based proof procedures. We will provide an abstract characterization of the warrant construction in the context of Skeptical Argumentation Frameworks. Often in th e 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 are as in Artificial Intelligence, particulary in the Knowledge-Based Systems community. Onl a few of them consider explanations in relation with argument systems. In th is paper, we propose a type of explanation that attempts to fill this gap providin g a perspective from the point of view of argumentation systems.