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Mild Contraction : Evaluating Loss of Information Due to Loss of Belief - Isaac Levi

Mild Contraction

Evaluating Loss of Information Due to Loss of Belief

Hardcover Published: 24th March 2005
ISBN: 9780199270705
Number Of Pages: 260

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Isaac Levi's new book develops further his pioneering work in formal epistemology, focusing on the problem of belief contraction, or how rationally to relinquish old beliefs. Levi offers the most penetrating analysis to date of this key question in epistemology, offering a completely new solution and explaining its relation to his earlier proposals. He mounts an argument in favor of the thesis that contracting a state of belief by giving up specific beliefs is to be evaluated in terms of the value of the information lost by doing so. The rationale aims to be thoroughly decision theoretic. Levi spells out his goals and shows that certain types of recommendations are obtained if one seeks to promote these goals. He compares his approach to his earlier account of inductive expansion. The recommendations are for "mild contractions." These are formally the same as the "severe withdrawals" considered by Pagnucco and Rott. The rationale, however, is different. A critical part of the book concerns the elaboration of these differences. The results are relevant to accounts of the conditions under which it is legitimate to cease believing and to accounts of conditionals. Mild Contraction will be of great interest to all specialists in belief revision theory and to many students of formal epistemology, philosophy of science, and pragmatism.

1: Supposition and Belief Change 2: Cognitive Decisions 3: Deliberate Expansion 4: Informational Value in Contraction 5: Contraction, Rational Choice, and Economy 6: Some Problems with Infinity Bibliography

ISBN: 9780199270705
ISBN-10: 0199270708
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 260
Published: 24th March 2005
Publisher: Oxford University Press
Country of Publication: GB
Dimensions (cm): 22.4 x 14.6  x 1.9
Weight (kg): 0.42