On the acceptability of arguments in bipolar argumentation frameworks

  • Authors:
  • C. Cayrol;M. C. Lagasquie-Schiex

  • Affiliations:
  • IRIT, Université Paul Sabatier, Toulouse;IRIT, Université Paul Sabatier, Toulouse

  • Venue:
  • ECSQARU'05 Proceedings of the 8th European conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty
  • Year:
  • 2005

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Abstract

In this paper, we extend the basic abstract argumentation framework proposed by Dung, by taking into account two independent kinds of interaction between arguments: a defeat relation and a support relation. In that new framework, called a bipolar argumentation framework, we focus on the concept of acceptability and propose new semantics defined from characteristic properties that a set of arguments must satisfy in order to be an output of the argumentation process. We generalize the well-known stable and preferred semantics by enforcing the coherence requirement for an acceptable set of arguments.