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Statistical Decision Theory Respecting Stochastic Dominance

Charles F. Manski, Aleksey Tetenov

arXiv 9 Aug 2023 · Econometrics · publishedJapanese Economic Review (2023) · 7 citations (OpenAlex)

arXiv:2308.05171 · PDF · DOI · OpenAlex

Abstract

The statistical decision theory pioneered by Wald (1950) has used state-dependent mean loss (risk) to measure the performance of statistical decision functions across potential samples. We think it evident that evaluation of performance should respect stochastic dominance, but we do not see a compelling reason to focus exclusively on mean loss. We think it instructive to also measure performance by other functionals that respect stochastic dominance, such as quantiles of the distribution of loss. This paper develops general principles and illustrative applications for statistical decision theory respecting stochastic dominance. We modify the Wald definition of admissibility to an analogous concept of stochastic dominance (SD) admissibility, which uses stochastic dominance rather than mean sampling performance to compare alternative decision rules. We study SD admissibility in two relatively simple classes of decision problems that arise in treatment choice. We reevaluate the relationship between the MLE, James-Stein, and James-Stein positive part estimators from the perspective of SD admissibility. We consider alternative criteria for choice among SD-admissible rules. We juxtapose traditional criteria based on risk, regret, or Bayes risk with analogous ones based on quantiles of state-dependent sampling distributions or the Bayes distribution of loss.

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Cited by, within the corpus

arXiv econ.EM papers that cite this one, ranked by how heavily they lean on it.

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1Regret Analysis in Threshold Policy Design0.64422
2Treatment Choice with Nonlinear Regret0.58531
3Policy Learning with Distributional Welfare0.40511
4Robust Bayes Treatment Choice with Partial Identification0.40511
5Leave No One Undermined: Policy Targeting with Regret Aversion0.40511
6Wasserstein Policy Learning for Distributional Outcomes0.40511