A rational decision rule with extreme events

A rational decision rule with extreme events

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Article ID: iaor20072260
Country: United Kingdom
Volume: 26
Issue: 6
Start Page Number: 1721
End Page Number: 1728
Publication Date: Dec 2006
Journal: Risk Analysis
Authors:
Keywords: values, decision: rules
Abstract:

Risks induced by extreme events are characterized by small or ambiguous probabilities, catastrophic losses, or windfall gains. Through a new functional, that mimics the restricted Bayes–Hurwicz criterion within the Choquet expected utility approach, it is possible to represent the decision-maker behavior facing both risky (large and reliable probability) and extreme (small or ambiguous probability) events. A new formalization of the precautionary principle is shown and a new functional, which encompasses both extreme outcomes and expectation of all the possible results for every act, is claimed.

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