Asymptotics in Bayesian decision theory with applications to global robustness

Christophe Abraham

Journal of Multivariate Analysis, 2005, vol. 95, issue 1, 50-65

Abstract: We provide the rate of convergence of the Bayes action derived from non smooth loss functions involved in Bayesian robustness. Such loss functions are typically not twice differentiable but admit right and left second derivatives. The asymptotic limit of three measures of global robustness is given. These measures are the range of the Bayes actions set associated with a class of loss functions, the maximum regret of using a particular loss when the subjective loss belongs to a given class and the range of the posterior expected loss when the loss ranges over a given class. An application to prior robustness with density ratio classes is provided.

Keywords: Bayesian; robustness; Class; of; loss; functions; Class; of; priors; Asymptotic; rate; of; convergence; Misspecified; models (search for similar items in EconPapers)
Date: 2005
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