Asymptotic Value of Monitoring Structures in Stochastic Games

Fuente: arXiv
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Main Authors: Kim, Daehyun, Obara, Ichiro
Format: Preprint
Published: 2023
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author Kim, Daehyun
Obara, Ichiro
author_facet Kim, Daehyun
Obara, Ichiro
contents This paper studies how improved monitoring affects the limit equilibrium payoff set for stochastic games with imperfect public monitoring. We introduce a simple generalization of Blackwell garbling called weighted garbling in order to compare different monitoring structures for this class of games. Our main result is the monotonicity of the limit perfect public equilibrium (PPE) payoff set with respect to this information order. We show that the limit PPE payoff set expands when the monitoring structure gets more informative with respect to the weighted garbling order. We also show that a similar monotonicity holds for strongly symmetric equilibrium for symmetric stochastic games. Finally, we show that our weighted garbling order is useful to compare the limit PPE payoff set for different state transition laws and monitoring structures when the limit feasible payoff set is the same.
format Preprint
id arxiv_https___arxiv_org_abs_2308_09211
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Asymptotic Value of Monitoring Structures in Stochastic Games
Kim, Daehyun
Obara, Ichiro
Theoretical Economics
This paper studies how improved monitoring affects the limit equilibrium payoff set for stochastic games with imperfect public monitoring. We introduce a simple generalization of Blackwell garbling called weighted garbling in order to compare different monitoring structures for this class of games. Our main result is the monotonicity of the limit perfect public equilibrium (PPE) payoff set with respect to this information order. We show that the limit PPE payoff set expands when the monitoring structure gets more informative with respect to the weighted garbling order. We also show that a similar monotonicity holds for strongly symmetric equilibrium for symmetric stochastic games. Finally, we show that our weighted garbling order is useful to compare the limit PPE payoff set for different state transition laws and monitoring structures when the limit feasible payoff set is the same.
title Asymptotic Value of Monitoring Structures in Stochastic Games
topic Theoretical Economics
url https://arxiv.org/abs/2308.09211