Institute for Web Science and Technologies · Universität Koblenz
Institute WeST

Ranking Extensions in Abstract Argumentation

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Kenneth Skiba

Extension-based semantics in abstract argumentation provide a criterion to determine whether a set of arguments is acceptable or not. In this work, we present the notion of extension-ranking semantics, which determines a preordering over sets of arguments, where one set is deemed more plausible than another if it is somehow more acceptable. We obtain extension-based semantics as a special case of this new approach, but it also allows us to make more fine-grained distinctions, such as one set being “more complete’’ or “more admissible’’ than another. We define a number of general principles to classify extension-ranking semantics and develop concrete approaches.

04.02.21 - 10:15
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