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On the Role of Preferences in Argumentation Frameworks

On the Role of Preferences in Argumentation Frameworks,10.1109/ICTAI.2010.38,Leila Amgoud,Srdjan Vesic

On the Role of Preferences in Argumentation Frameworks   (Citations: 2)
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The aim of this paper is to study how preferences, which are used to model intrinsic strengths of arguments, can be used in argumentation. We show that they play two roles: i) to repair the attack relation between arguments, and ii) to refine the evaluation of arguments. Then, we point out that the existing approaches for preference-based argumentation model only the first role. They may also return non conflict-free extensions. We propose a general framework that overcomes those limitations.
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    • ...Recently, we have shown in [3] that existing PAFs (developed in [2,4]) are not appropriate since they may return unintended results, especially when the attack relation is asymmetric...
    • ...[3]) a new family of PAFs, called rich PAF, that encodes two distinct roles of preferences between arguments: handling critical attacks (that is an argument is stronger than its attacker) and refining the result of the evaluation of arguments using acceptability semantics...
    • ...The paper is organized as follows: Sections 2 and 3 recall respectively the rich PAF in [3] and the two works of [6,8]...
    • ...In [3], we have proposed a novel approach which palliates the limits of the existing ones...
    • ...Dung’s acceptability semantics are then applied on the modified graph. Definition 6 (PAF [3])...
    • ...In [3], we have studied deeply the properties of the rich PAF...

    Leila Amgoudet al. Handling Inconsistency with Preference-Based Argumentation

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