PMIC: Improving Multi-Agent Reinforcement Learning with Progressive Mutual Information Collaboration
| Autor: | Li, Pengyi, Tang, Hongyao, Yang, Tianpei, Hao, Xiaotian, Sang, Tong, Zheng, Yan, Hao, Jianye, Taylor, Matthew E., Tao, Wenyuan, Wang, Zhen, Barez, Fazl |
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| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Learning to collaborate is critical in Multi-Agent Reinforcement Learning (MARL). Previous works promote collaboration by maximizing the correlation of agents' behaviors, which is typically characterized by Mutual Information (MI) in different forms. However, we reveal sub-optimal collaborative behaviors also emerge with strong correlations, and simply maximizing the MI can, surprisingly, hinder the learning towards better collaboration. To address this issue, we propose a novel MARL framework, called Progressive Mutual Information Collaboration (PMIC), for more effective MI-driven collaboration. PMIC uses a new collaboration criterion measured by the MI between global states and joint actions. Based on this criterion, the key idea of PMIC is maximizing the MI associated with superior collaborative behaviors and minimizing the MI associated with inferior ones. The two MI objectives play complementary roles by facilitating better collaborations while avoiding falling into sub-optimal ones. Experiments on a wide range of MARL benchmarks show the superior performance of PMIC compared with other algorithms. Comment: The paper has been accepted by The Thirty-ninth International Conference on Machine Learning (ICML 2022) and the Cooperative AI Workshop at 35th Conference on Neural Information Processing Systems (NeurIPS 2021) |
| Databáze: | arXiv |
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