Representation, Propagation, and Decision Issues in Risk Analysis Under Incomplete Probabilistic Information

Didier Dubois

Risk Analysis, 2010, vol. 30, issue 3, 361-368

Abstract: This article tries to clarify the potential role to be played by uncertainty theories such as imprecise probabilities, random sets, and possibility theory in the risk analysis process. Instead of opposing an objective bounding analysis, where only statistically founded probability distributions are taken into account, to the full‐fledged probabilistic approach, exploiting expert subjective judgment, we advocate the idea that both analyses are useful and should be articulated with one another. Moreover, the idea that risk analysis under incomplete information is purely objective is misconceived. The use of uncertainty theories cannot be reduced to a choice between probability distributions and intervals. Indeed, they offer representation tools that are more expressive than each of the latter approaches and can capture expert judgments while being faithful to their limited precision. Consequences of this thesis are examined for uncertainty elicitation, propagation, and at the decision‐making step.

Date: 2010
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https://doi.org/10.1111/j.1539-6924.2010.01359.x

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Persistent link: https://EconPapers.repec.org/RePEc:wly:riskan:v:30:y:2010:i:3:p:361-368

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