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TaxAI: A Dynamic Economic Simulator and Benchmark for Multi-Agent Reinforcement Learning

Mi, Q; Xia, S; Song, Y; Zhang, H; Zhu, S; Wang, J; (2024) TaxAI: A Dynamic Economic Simulator and Benchmark for Multi-Agent Reinforcement Learning. In: Proceedings of the International Joint Conference on Autonomous Agents and Multiagent Systems, AAMAS. (pp. pp. 1390-1399). International Foundation for Autonomous Agents and Multiagent Systems (www.ifaamas.org) Green open access

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Abstract

Taxation and government spending are crucial tools for governments to promote economic growth and maintain social equity. However, the difficulty in accurately predicting the dynamic strategies of diverse self-interested households presents a challenge for governments to implement effective tax policies. Given its proficiency in modeling other agents in partially observable environments and adaptively learning to find optimal policies, Multi-Agent Reinforcement Learning (MARL) is highly suitable for solving dynamic games between the government and numerous households. Although MARL shows more potential than traditional methods such as the genetic algorithm and dynamic programming, there is a lack of large-scale multi-agent reinforcement learning economic simulators. Therefore, we propose a MARL environment, named TaxAI, for dynamic games involving N households, government, firms, and financial intermediaries based on the Bewley-Aiyagari economic model. Our study benchmarks 2 traditional economic methods with 7 MARL methods on TaxAI, demonstrating the effectiveness and superiority of MARL algorithms. Moreover, TaxAI's scalability in simulating dynamic interactions between the government and 10,000 households, coupled with real-data calibration, grants it a substantial improvement in scale and reality over existing simulators. Therefore, TaxAI is the most realistic economic simulator for optimal tax policy, which aims to generate feasible recommendations for governments and individuals.

Type: Proceedings paper
Title: TaxAI: A Dynamic Economic Simulator and Benchmark for Multi-Agent Reinforcement Learning
Event: AAMAS '24: International Conference on Autonomous Agents and Multiagent Systems
ISBN-13: 979-8-4007-0486-4
Open access status: An open access version is available from UCL Discovery
DOI: 10.5555/3635637.3662998
Publisher version: https://www.ifaamas.org/Proceedings/aamas2024/pdfs...
Language: English
Additional information: © 2024 International Foundation for Autonomous Agents and Multiagent Systems (www.ifaamas.org). This work is licensed under a Creative Commons Attribution International 4.0 License (https://creativecommons.org/licenses/by/4.0/deed.en).
Keywords: Multi-agent reinforcement learning; optimal tax policy; dynamic economic simulator; benchmark; tax evasion behavior
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: https://discovery.ucl.ac.uk/id/eprint/10206798
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