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Optimization Of Quasi-convex Function Over Product Measure Sets

Abstract : We consider a generalization of the Bauer maximum principle. We work with tensorial products of convex measures sets, that are non necessarily compact but generated by their extreme points. We show that the maximum of a quasi-convex lower semicontinuous function on this product space is reached on the tensorial product of finite mixtures of extreme points. Our work is an extension of the Bauer maximum principle in three different aspects. First, we only assume that the objective functional is quasi-convex. Secondly, the optimization is performed over a space built as a product of measures sets. Finally, the usual compactness assumption is replaced with the existence of an integral representation on the extreme points. We focus on product of two different types of measures sets, called the moment class and the unimodal moment class. The elements of these classes are probability measures (respectively unimodal probability measures) satisfying generalized moment constraints. We show that an integral representation on the extreme points stands for such spaces and that it extends to their tensorial product. We give several applications of the Theorem, going from robust Bayesian analysis to the optimization of a quantile of a computer code output.
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Contributor : Jerome Stenger <>
Submitted on : Thursday, October 8, 2020 - 11:28:03 AM
Last modification on : Tuesday, June 29, 2021 - 9:12:00 AM


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Jerome Stenger, Fabrice Gamboa, Merlin Keller. Optimization Of Quasi-convex Function Over Product Measure Sets. SIAM Journal on Optimization, Society for Industrial and Applied Mathematics, 2021, 31 (1), pp.425-447. ⟨10.1137/19M1275322⟩. ⟨hal-02183606v2⟩



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