Choquet expected utility with affine capacities

Choquet expected utility with affine capacities

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Article ID: iaor20163721
Volume: 81
Issue: 2
Start Page Number: 177
End Page Number: 187
Publication Date: Aug 2016
Journal: Theory and Decision
Authors:
Keywords: decision: studies
Abstract:

This paper studies decisions under ambiguity when attention is paid to extreme outcomes. In a purely subjective framework, we propose an axiomatic characterization of affine capacities, which are Choquet capacities consisting in an affine transformation of a subjective probability. Our main axiom restricts the well‐known Savage’s Sure‐Thing Principle to a change in a common intermediate outcome. The representation result is then an affine combination of the expected utility of the valued act and its maximal and minimal utilities.

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