Decision theory and the "almost implies near" phenomenon

Christopher P Chambers and Federico Echenique

Papers from arXiv.org

Abstract: We propose to relax traditional axioms in decision theory by incorporating a measurement, or degree, of satisfaction. For example, if the independence axiom of expected utility theory is violated, we can measure the size of the violation. This measure allows us to derive an approximation guarantee for a utility representation that aligns with the unmodified version of the axiom. Almost satisfying the axiom implies, then, a utility that is near a utility representation. We develop specific examples drawn from expected utility theory under risk and uncertainty.

Date: 2025-02
New Economics Papers: this item is included in nep-mic
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