Updating belief in arguments in epistemic graphs

Hunter, Anthony, Polberg, Sylwia ORCID: https://orcid.org/0000-0002-0811-0226 and Potyka, Nico 2018. Updating belief in arguments in epistemic graphs. Presented at: 16th International Conference on Principles of Knowledge Representation and Reasoning, Tempe, AZ, USA, 30 October - 2 November 2018. Sixteenth International Conference on Principles of Knowledge Representation and Reasoning. Association for the Advancement of Artificial Intelligence, pp. 138-147.

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Abstract

Epistemic graphs are a recent generalization of epistemic probabilistic argumentation. Relations between arguments can be supporting, attacking, as well as neither supporting nor attacking. These interdependencies are represented by epistemic constraints, and the semantics of epistemic graphs are given in terms of probability distributions satisfying these constraints. We investigate the behaviour of epistemic graphs in a dynamic setting where a given distribution can be updated once new constraints are presented. Our focus is on update methods that minimize the change in probabilistic beliefs. We show that all methods satisfy basic commonsense postulates, identify fragments of the epistemic constraint language that guarantee the existence of well-defined solutions, and explain how the problems that arise in more expressive fragments can be treated either automatically or by user support. We demonstrate the usefulness of our proposal by considering its application in computational persuasion.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Computer Science & Informatics
Publisher:	Association for the Advancement of Artificial Intelligence
Related URLs:	Organisation
Date of First Compliant Deposit:	9 April 2019
Last Modified:	25 Oct 2022 14:07
URI:	https://orca.cardiff.ac.uk/id/eprint/121653

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