On data-driven Wasserstein distributionally robust Nash equilibrium problems with heterogeneous uncertainty

Fuente: arXiv
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Main Authors: Pantazis, Georgios, Franci, Barbara, Grammatico, Sergio
Format: Preprint
Published: 2023
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author Pantazis, Georgios
Franci, Barbara
Grammatico, Sergio
author_facet Pantazis, Georgios
Franci, Barbara
Grammatico, Sergio
contents We study stochastic Nash equilibrium problems subject to heterogeneous uncertainty on the expected valued cost functions of the individual agents, where we assume no prior knowledge of the underlying probability distributions of the uncertain variables. To account for this lack of knowledge, we consider an ambiguity set around the empirical probability distribution under the Wasserstein metric. We then show that, under mild assumptions, finite-sample guarantees on the probability that any resulting distributionally robust Nash equilibrium is also robust with respect to the true probability distributions with high confidence can be obtained. Furthermore, by recasting the game as a distributionally robust variational inequality, we establish asymptotic consistency of the set of data-driven distributionally robust equilibria to the solution set of the original game. Finally, we recast the distributionally robust Nash game as a finite-dimensional Nash equilibrium problem. We illustrate the proposed distributionally robust reformulation via numerical experiments of stochastic peer-to-peer electricity markets and Nash-Cournot games.
format Preprint
id arxiv_https___arxiv_org_abs_2312_03573
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle On data-driven Wasserstein distributionally robust Nash equilibrium problems with heterogeneous uncertainty
Pantazis, Georgios
Franci, Barbara
Grammatico, Sergio
Optimization and Control
Systems and Control
We study stochastic Nash equilibrium problems subject to heterogeneous uncertainty on the expected valued cost functions of the individual agents, where we assume no prior knowledge of the underlying probability distributions of the uncertain variables. To account for this lack of knowledge, we consider an ambiguity set around the empirical probability distribution under the Wasserstein metric. We then show that, under mild assumptions, finite-sample guarantees on the probability that any resulting distributionally robust Nash equilibrium is also robust with respect to the true probability distributions with high confidence can be obtained. Furthermore, by recasting the game as a distributionally robust variational inequality, we establish asymptotic consistency of the set of data-driven distributionally robust equilibria to the solution set of the original game. Finally, we recast the distributionally robust Nash game as a finite-dimensional Nash equilibrium problem. We illustrate the proposed distributionally robust reformulation via numerical experiments of stochastic peer-to-peer electricity markets and Nash-Cournot games.
title On data-driven Wasserstein distributionally robust Nash equilibrium problems with heterogeneous uncertainty
topic Optimization and Control
Systems and Control
url https://arxiv.org/abs/2312.03573