Who’s the expert? On multi-source belief change

Singleton, Joseph and Booth, Richard ORCID: https://orcid.org/0000-0002-6647-6381 2022. Who’s the expert? On multi-source belief change. Presented at: 19th International Conference on Principles of Knowledge Representation and Reasoning (KR 2022), Haifa, Israel, 31 July - 05 August 2022.

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Abstract

Consider the following belief change/merging scenario. A group of information sources gives a sequence of reports about the state of the world at various instances (e.g. different points in time). The true states at these instances are unknown to us. The sources have varying levels of expertise, also unknown to us, and may be knowledgeable on some topics but not others. This may cause sources to report false statements in areas they lack expertise. What should we believe on the basis of these reports? We provide a framework in which to explore this problem, based on an extension of propositional logic with expertise formulas. This extended language allows us to express beliefs about the state of the world at each instance, as well as beliefs about the expertise of each source. We propose several postulates, provide a couple of families of concrete operators, and analyse these operators with respect to the postulates.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Completion
Status:	In Press
Schools:	Computer Science & Informatics
Subjects:	Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Date of First Compliant Deposit:	17 May 2022
Last Modified:	10 Nov 2022 11:15
URI:	https://orca.cardiff.ac.uk/id/eprint/149810

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