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Bayesian multi-objective optimization for stochastic simulators: an extension of the Pareto Active Learning method

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Abstract

This article focuses on the multi-objective optimization of stochastic simulators with high output variance, where the input space is finite and the objective functions are expensive to evaluate. We rely on Bayesian optimization algorithms, which use probabilistic models to make predictions about the functions to be optimized. The proposed approach is an extension of the Pareto Active Learning (PAL) algorithm for the estimation of Pareto-optimal solutions that makes it suitable for the stochastic setting. We named it Pareto Active Learning for Stochastic Simulators (PALS). The performance of PALS is assessed through numerical experiments over a set of bi-dimensional, bi-objective test problems. PALS exhibits superior performance when compared to other scalarization-based and random-search approaches.
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Dates and versions

hal-03714535 , version 1 (07-07-2022)
hal-03714535 , version 2 (19-07-2022)

Licence

Attribution - NonCommercial - NoDerivatives - CC BY 4.0

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Cite

Bruno Barracosa, Julien Bect, Héloïse Dutrieux Baraffe, Juliette Morin, Josselin Fournel, et al.. Bayesian multi-objective optimization for stochastic simulators: an extension of the Pareto Active Learning method. 2022. ⟨hal-03714535v2⟩
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