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Published in:
2012 | OriginalPaper | Chapter
Conditional Labelling for Abstract Argumentation
Authors : Guido Boella, Dov M. Gabbay, Alan Perotti, Leendert van der Torre, Serena Villata
Published in: Theorie and Applications of Formal Argumentation
Publisher: Springer Berlin Heidelberg
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Agents engage in dialogues having as goals to make some arguments acceptable or unacceptable. To do so they may put forward arguments, adding them to the argumentation framework. Argumentation semantics can relate a change in the framework to the resulting extensions but it is not clear, given an argumentation framework and a desired acceptance state for a given set of arguments, which further arguments should be added in order to achieve those justification statuses. Our methodology, called
conditional labelling
, is based on argument labelling and assigns to each argument three propositional formulae. These formulae describe which arguments should be attacked by the agent in order to get a particular argument
in
,
out
, or
undecided
, respectively. Given a conditional labelling, the agents have a full knowledge about the consequences of the attacks they may raise on the acceptability of each argument without having to recompute the overall labelling of the framework for each possible set of attack they may raise.