The Effect of Preferences in Abstract Argumentation under a Claim-Centric View
Michael Bernreiter, Wolfgang Dvorak, Anna Rapberger, Stefan Woltran
Abstract
In this paper, we study the effect of preferences in abstract argumentation under a claim-centric perspective. Recent work has revealed that semantical and computational properties can change when reasoning is performed on claim-level rather than on the argument-level, while under certain natural restrictions (arguments with the same claims have the same outgoing attacks) these properties are conserved. We now investigate these effects when, in addition, preferences have to be taken into account and consider four prominent reductions to handle preferences between arguments. As we shall see, these reductions give rise to different classes of claim-augmented argumentation frameworks, and behave differently in terms of semantic properties and computational complexity. This strengthens the view that the actual choice for handling preferences has to be taken with care.
BibTeX
@article{Bernreiter_Dvorak_Rapberger_Woltran_2023, title={The Effect of Preferences in Abstract Argumentation under a Claim-Centric View}, volume={37}, url={https://ojs.aaai.org/index.php/AAAI/article/view/25770}, DOI={10.1609/aaai.v37i5.25770}, abstractNote={In this paper, we study the effect of preferences in abstract argumentation under a claim-centric perspective. Recent work has revealed that semantical and computational properties can change when reasoning is performed on claim-level rather than on the argument-level, while under certain natural restrictions (arguments with the same claims have the same outgoing attacks) these properties are conserved. We now investigate these effects when, in addition, preferences have to be taken into account and consider four prominent reductions to handle preferences between arguments. As we shall see, these reductions give rise to different classes of claim-augmented argumentation frameworks, and behave differently in terms of semantic properties and computational complexity. This strengthens the view that the actual choice for handling preferences has to be taken with care.}, number={5}, journal={Proceedings of the AAAI Conference on Artificial Intelligence}, author={Bernreiter, Michael and Dvorak, Wolfgang and Rapberger, Anna and Woltran, Stefan}, year={2023}, month={Jun.}, pages={6253-6261} }