Learning to Mitigate Externalities: the Coase Theorem with Hindsight Rationality

Fuente: arXiv
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Main Authors: Scheid, Antoine, Capitaine, Aymeric, Boursier, Etienne, Moulines, Eric, Jordan, Michael I, Durmus, Alain
Format: Preprint
Published: 2024
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_version_ 1866917903813574656
author Scheid, Antoine
Capitaine, Aymeric
Boursier, Etienne
Moulines, Eric
Jordan, Michael I
Durmus, Alain
author_facet Scheid, Antoine
Capitaine, Aymeric
Boursier, Etienne
Moulines, Eric
Jordan, Michael I
Durmus, Alain
contents In economic theory, the concept of externality refers to any indirect effect resulting from an interaction between players that affects the social welfare. Most of the models within which externality has been studied assume that agents have perfect knowledge of their environment and preferences. This is a major hindrance to the practical implementation of many proposed solutions. To address this issue, we consider a two-player bandit setting where the actions of one of the players affect the other player and we extend the Coase theorem [Coase, 1960]. This result shows that the optimal approach for maximizing the social welfare in the presence of externality is to establish property rights, i.e., enable transfers and bargaining between the players. Our work removes the classical assumption that bargainers possess perfect knowledge of the underlying game. We first demonstrate that in the absence of property rights, the social welfare breaks down. We then design a policy for the players which allows them to learn a bargaining strategy which maximizes the total welfare, recovering the Coase theorem under uncertainty.
format Preprint
id arxiv_https___arxiv_org_abs_2406_19824
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Learning to Mitigate Externalities: the Coase Theorem with Hindsight Rationality
Scheid, Antoine
Capitaine, Aymeric
Boursier, Etienne
Moulines, Eric
Jordan, Michael I
Durmus, Alain
Computer Science and Game Theory
Machine Learning
In economic theory, the concept of externality refers to any indirect effect resulting from an interaction between players that affects the social welfare. Most of the models within which externality has been studied assume that agents have perfect knowledge of their environment and preferences. This is a major hindrance to the practical implementation of many proposed solutions. To address this issue, we consider a two-player bandit setting where the actions of one of the players affect the other player and we extend the Coase theorem [Coase, 1960]. This result shows that the optimal approach for maximizing the social welfare in the presence of externality is to establish property rights, i.e., enable transfers and bargaining between the players. Our work removes the classical assumption that bargainers possess perfect knowledge of the underlying game. We first demonstrate that in the absence of property rights, the social welfare breaks down. We then design a policy for the players which allows them to learn a bargaining strategy which maximizes the total welfare, recovering the Coase theorem under uncertainty.
title Learning to Mitigate Externalities: the Coase Theorem with Hindsight Rationality
topic Computer Science and Game Theory
Machine Learning
url https://arxiv.org/abs/2406.19824