An Abstract Argumentation Framework with Varied-Strength Attacks

DIEGO C. MARTINEZ; ALEJANDRO J. GARCÍA; GUILLERMO R. SIMARI

Sydney, Australia

Conferencia; 11th International Conference on Principles of Knowledge Representation and Reasoning; 2008

Association for the Advancement of Artificial Intelligence (www.aaai.org)

In classical abstract argumentation, arguments interact with each other through a single abstract notion of attack. However, several concrete forms of argument conflict are present in the literature, all of them of different nature and strength for a particular context. In this work we define an argumentation framework equipped with a set of abstract attack relations of varied strength. Using this framework, semantic notions dealing with the relative difference of strength are introduced. The focus is put on argument defense, and the study of admissible sets according to the quality of defenders.