Preference-Based argumentation handling dynamic preferences built on prioritized logic programming

  • Authors:
  • Toshiko Wakaki

  • Affiliations:
  • Shibaura Institute of Technology, Saitama-city, Saitama, Japan

  • Venue:
  • PRIMA'11 Proceedings of the 14th international conference on Agents in Principle, Agents in Practice
  • Year:
  • 2011

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Abstract

To treat dynamic preferences correctly is crucially required in the fields of argumentation as well as nonmonotonic reasoning. To meet such requirements, first, we propose a hierarchical Prioritized Logic Program (or a hierarchical PLP, for short), which enhances the formalism of Sakama and Inoue's PLP so that it can represent and reason about dynamic preferences. Second, using such a hierarchical PLP as the underlying language, the proposed method defines the preference-based argumentation framework (called the dynamic PAF) built from it. This enables us to argue and reason about dynamic preferences in argumentation. Finally we show the interesting relationship between semantics of a hierarchical PLP given by preferred answer sets and semantics of the dynamic PAF given by ${\cal P}$-extensions.