Backing and Undercutting in Abstract Argumentation Frameworks.

ANDREA COHEN; ALEJANDRO J. GARCÍA; GUILLERMO R. SIMARI

Simposio; 7th International Symposium on Foundations of Information and Knowledge Systems; 2012

This work will introduce a novel combination of two impor-tant argumentation related notions. We will start from the well-knownbasis of Abstract Argumentation Frameworks or AFs, and we will build anew formalism in which the notions corresponding to Toulmin?s backingsand Pollock?s undercutting defeaters are considered. The resulting sys-tem, Backing-Undercutting Argumentation Frameworks or BUAFs, willbe an extension of the AFs that includes a specialized support relation,a distinction between different attack types, and a preference relationamong arguments. Thus, BUAFs will provide a richer representation toolfor handling scenarios where information can be attacked and supported.