Robustness and Approximation of Discrete-time Mean-field Games under Discounted Cost Criterion

Fuente: arXiv
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Main Authors: Aydın, Uğur, Saldi, Naci
Format: Preprint
Published: 2023
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author Aydın, Uğur
Saldi, Naci
author_facet Aydın, Uğur
Saldi, Naci
contents In this paper, we investigate the robustness of stationary mean-field equilibria in the presence of model uncertainties, specifically focusing on infinite-horizon discounted cost functions. To achieve this, we initially establish convergence conditions for value iteration-based algorithms in mean-field games. Subsequently, utilizing these results, we demonstrate that the mean-field equilibrium obtained through this value iteration algorithm remains robust even in the face of system dynamics misspecifications. We then apply these robustness findings to the finite model approximation problem in mean-field games, showing that if the state space quantization is fine enough, the mean-field equilibrium for the finite model closely approximates the nominal one.
format Preprint
id arxiv_https___arxiv_org_abs_2310_10828
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Robustness and Approximation of Discrete-time Mean-field Games under Discounted Cost Criterion
Aydın, Uğur
Saldi, Naci
Systems and Control
Optimization and Control
In this paper, we investigate the robustness of stationary mean-field equilibria in the presence of model uncertainties, specifically focusing on infinite-horizon discounted cost functions. To achieve this, we initially establish convergence conditions for value iteration-based algorithms in mean-field games. Subsequently, utilizing these results, we demonstrate that the mean-field equilibrium obtained through this value iteration algorithm remains robust even in the face of system dynamics misspecifications. We then apply these robustness findings to the finite model approximation problem in mean-field games, showing that if the state space quantization is fine enough, the mean-field equilibrium for the finite model closely approximates the nominal one.
title Robustness and Approximation of Discrete-time Mean-field Games under Discounted Cost Criterion
topic Systems and Control
Optimization and Control
url https://arxiv.org/abs/2310.10828