LP-1996-07: Probabilistic Belief Expansion and Conditioning

LP-1996-07: Voorbraak, Frans (1996) Probabilistic Belief Expansion and Conditioning. [Report]

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Abstract

The paper discusses probabilistic belief change, in particular the type of change occurring when information is added which is consistent with the old beliefs. In the AGM theory of belief revision this type of belief change is known as an expansion, and is usually considered to be easy compared to revision and contraction, the two other main types of belief changes the AGM theory distinguishes. If logical theories are used to represent the belief states, then an explicit definition of expansion can be given, and, at first sight, probabilistic conditioning seems a natural generalization of this notion in the context of probabilistic belief states. However, we argue that it may be more correct to view conditioning and expansion as two different kinds of belief change, and we discuss the differences between the two kinds in the context of belief states represented by partially determined probability functions.

Item Type: Report
Report Nr: LP-1996-07
Series Name: Logic, Philosophy and Linguistics (LP)
Year: 1996
Date Deposited: 12 Oct 2016 14:39
Last Modified: 12 Oct 2016 14:39
URI: https://eprints.illc.uva.nl/id/eprint/1243

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