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Cosmina Croitoru

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2 papers

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JELIA Conference 2016 Conference Paper

Opposition Frameworks

Cosmina Croitoru
Kurt Mehlhorn

Abstract In this paper we introduce opposition frameworks, a generalization of Dung’s argumentation frameworks. While keeping the attack relation as the sole type of interaction between nodes and the abstract level of argumentation frameworks, opposition networks add more flexibility, reducing the gap between structured and abstract argumentation. A guarded attack calculus is developed in order to obtain proper generalizations of Dung’s admissibility-based semantics. The high modeling capabilities of our new setting offer an alternative instantiation solution (of other existing argumentation frameworks) for arguments evaluation.

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JELIA Conference 2014 Conference Paper

Argumentative Aggregation of Individual Opinions

Cosmina Croitoru

Abstract Over a new abstract model of aggregating individual issues – abstract debates – we introduce an entire class of aggregating operators by borrowing ideas from Abstract Argumentation to Social Choice Theory. The main goal was to introduce rational aggregation methods which do not satisfy the commonly used independence condition in Social Choice Theory. This type of context dependent aggregation is very natural, could be useful in many real world decision making scenarios, and the present paper provides the first theoretical investigation of it.

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