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Multi-agent reinforcement learning (MARL) methods have achieved state-of-the-art results on a range of multi-agent tasks. Yet, MARL algorithms typically require significantly more environment interactions than their single-agent…

Systems and Control · Electrical Eng. & Systems 2026-03-17 Tom Danino , Nahum Shimkin

We introduce a reinforcement learning method for a class of non-Markov systems; our approach extends the actor-critic framework given by Rose et al. [New J. Phys. 23 013013 (2021)] for obtaining scaled cumulant generating functions…

Statistical Mechanics · Physics 2026-03-09 Venkata D. Pamulaparthy , Rosemary J. Harris

In the last few years, deep multi-agent reinforcement learning (RL) has become a highly active area of research. A particularly challenging class of problems in this area is partially observable, cooperative, multi-agent learning, in which…

Actor-critic methods for decentralized multi-agent reinforcement learning (MARL) facilitate collaborative optimal decision making without centralized coordination, thus enabling a wide range of applications in practice. To date, however,…

Machine Learning · Computer Science 2025-08-14 Zhiyao Zhang , Myeung Suk Oh , FNU Hairi , Ziyue Luo , Alvaro Velasquez , Jia Liu

Robust adversarial reinforcement learning has emerged as an effective paradigm for training agents to handle uncertain disturbance in real environments, with critical applications in sequential decision-making domains such as autonomous…

Machine Learning · Computer Science 2026-01-26 Jiaxi Wu , Tiantian Zhang , Yuxing Wang , Yongzhe Chang , Xueqian Wang

Actor-critic methods solve reinforcement learning problems by updating a parameterized policy known as an actor in a direction that increases an estimate of the expected return known as a critic. However, existing actor-critic methods only…

Machine Learning · Statistics 2018-02-23 Voot Tangkaratt , Abbas Abdolmaleki , Masashi Sugiyama

We propose a fully distributed actor-critic architecture, named Diff-DAC, with application to multitask reinforcement learning (MRL). During the learning process, agents communicate their value and policy parameters to their neighbours,…

Machine Learning · Computer Science 2021-10-26 Sergio Valcarcel Macua , Ian Davies , Aleksi Tukiainen , Enrique Munoz de Cote

Providing densely shaped reward functions for RL algorithms is often exceedingly challenging, motivating the development of RL algorithms that can learn from easier-to-specify sparse reward functions. This sparsity poses new exploration…

Machine Learning · Computer Science 2022-10-24 Albert Wilcox , Ashwin Balakrishna , Jules Dedieu , Wyame Benslimane , Daniel S. Brown , Ken Goldberg

Deep reinforcement learning for multi-agent cooperation and competition has been a hot topic recently. This paper focuses on cooperative multi-agent problem based on actor-critic methods under local observations settings. Multi agent deep…

Artificial Intelligence · Computer Science 2017-10-04 Xiangxiang Chu , Hangjun Ye

This paper introduces Team-Attention-Actor-Critic (TAAC), a reinforcement learning algorithm designed to enhance multi-agent collaboration in cooperative environments. TAAC employs a Centralized Training/Centralized Execution scheme…

Artificial Intelligence · Computer Science 2025-12-23 Hugo Garrido-Lestache Belinchon , Jeremy Kedziora

Deep reinforcement learning (RL) algorithms can use high-capacity deep networks to learn directly from image observations. However, these high-dimensional observation spaces present a number of challenges in practice, since the policy must…

Machine Learning · Computer Science 2020-10-27 Alex X. Lee , Anusha Nagabandi , Pieter Abbeel , Sergey Levine

The research of extending deep reinforcement learning (drl) to multi-agent field has solved many complicated problems and made great achievements. However, almost all these studies only focus on discrete or continuous action space and there…

Machine Learning · Computer Science 2022-09-01 Hongzhi Hua , Guixuan Wen , Kaigui Wu

Synchronizing decisions across multiple agents in realistic settings is problematic since it requires agents to wait for other agents to terminate and communicate about termination reliably. Ideally, agents should learn and execute…

Machine Learning · Computer Science 2022-10-12 Yuchen Xiao , Weihao Tan , Christopher Amato

In real-world multi-robot systems, performing high-quality, collaborative behaviors requires robots to asynchronously reason about high-level action selection at varying time durations. Macro-Action Decentralized Partially Observable Markov…

Machine Learning · Computer Science 2021-10-19 Yuchen Xiao , Joshua Hoffman , Christopher Amato

Centralized Training for Decentralized Execution, where agents are trained offline using centralized information but execute in a decentralized manner online, has gained popularity in the multi-agent reinforcement learning community. In…

Machine Learning · Computer Science 2021-12-06 Xueguang Lyu , Yuchen Xiao , Brett Daley , Christopher Amato

Substantial advancements to model-based reinforcement learning algorithms have been impeded by the model-bias induced by the collected data, which generally hurts performance. Meanwhile, their inherent sample efficiency warrants utility for…

Multi-agent collaboration has emerged as a powerful paradigm for enhancing the reasoning capabilities of large language models, yet it suffers from interaction-level ambiguity that blurs generation, critique, and revision, making credit…

Artificial Intelligence · Computer Science 2026-03-24 Zhongyi Li , Wan Tian , Jingyu Chen , Kangyao Huang , Huiming Zhang , Hui Yang , Tao Ren , Jinyang Jiang , Yijie Peng , Yikun Ban , Fuzhen Zhuang

Large sequence model (SM) such as GPT series and BERT has displayed outstanding performance and generalization capabilities on vision, language, and recently reinforcement learning tasks. A natural follow-up question is how to abstract…

Multiagent Systems · Computer Science 2022-10-31 Muning Wen , Jakub Grudzien Kuba , Runji Lin , Weinan Zhang , Ying Wen , Jun Wang , Yaodong Yang

We propose a fully distributed actor-critic algorithm approximated by deep neural networks, named \textit{Diff-DAC}, with application to single-task and to average multitask reinforcement learning (MRL). Each agent has access to data from…

The exploitation of extra state information has been an active research area in multi-agent reinforcement learning (MARL). QMIX represents the joint action-value using a non-negative function approximator and achieves the best performance,…

Artificial Intelligence · Computer Science 2020-12-21 Jianyu Su , Stephen Adams , Peter A. Beling