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Mechanism Design for Abstract Argumentation



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Mechanism Design for Abstract Argumentation Iyad Rahwan Kate Larson Fellow School of Informatics University of Edinburgh Edinburgh EH8 9LE UK 2 Faculty of Informatics British University in Dubai P O Box 502216 Dubai UAE Cheriton School of Computer Science University of Waterloo 200 University Avenue West Waterloo ON N2L 3G1 Canada 1 ABSTRACT Since their introduction by Dung over a decade ago abstract argumentation frameworks have received increasing interest in artificial intelligence as a convenient model for reasoning about general characteristics of argument Such a framework consists of a set of arguments and a binary defeat relation among them Various semantic and computational approaches have been developed to characterise the acceptability of individual arguments in a given argumentation framework However little work exists on understanding the strategic aspects of abstract argumentation among self interested agents In this paper we introduce game theoretic argumentation mechanism design ArgMD which enables the design and analysis of argumentation mechanisms for self interested agents We define the notion of a direct revelation argumentation mechanism in which agents must decide which arguments to reveal simultaneously We then design a particular direct argumentation mechanism and prove that it is strategy proof under specific conditions that is the strategy profile in which each agent reveals its arguments truthfully is a dominant strategy equilibrium Categories and Subject Descriptors I 2 11 Artificial Intelligence Distributed Artificial Intelligence multiagent systems coherence and coordination General Terms Theory Economics Keywords Argumentation Game Theory Mechanism Design 1 INTRODUCTION One of the most influential computational models of argument was presented by Dung 3 Arguments are viewed as abstract entities with a binary defeat relation among them This view of argumentation enables high level analysis while abstracting away from the internal



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