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Reinforcement learning (RL) has been extensively employed in a wide range of decision-making problems, such as games and robotics. Recently, diffusion policies have shown strong potential in modeling multi-modal behaviors, enabling more…

Machine Learning · Computer Science 2026-03-06 Ben Liu , Shunpeng Yang , Hua Chen

Offline multi-agent reinforcement learning (MARL) aims to solve cooperative decision-making problems in multi-agent systems using pre-collected datasets. Existing offline MARL methods primarily constrain training within the dataset…

Artificial Intelligence · Computer Science 2026-03-01 Sijia Li , Xinran Li , Shibo Chen , Jun Zhang

Offline multi-agent reinforcement learning (MARL) aims to learn the optimal joint policy from pre-collected datasets, requiring a trade-off between maximizing global returns and mitigating distribution shift from offline data. Recent…

Machine Learning · Computer Science 2026-04-10 Teng Pang , Zhiqiang Dong , Yan Zhang , Rongjian Xu , Guoqiang Wu , Yilong Yin

The cooperative driving technology of Connected and Autonomous Vehicles (CAVs) is crucial for improving the efficiency and safety of transportation systems. Learning-based methods, such as Multi-Agent Reinforcement Learning (MARL), have…

Robotics · Computer Science 2025-08-12 Jiaqi Liu , Chengkai Xu , Peng Hang , Jian Sun , Wei Zhan , Masayoshi Tomizuka , Mingyu Ding

Cooperative multi-agent reinforcement learning (MARL) aims to coordinate multiple agents to achieve a common goal. A key challenge in MARL is credit assignment, which involves assessing each agent's contribution to the shared reward. Given…

Artificial Intelligence · Computer Science 2025-08-12 Xutong Zhao , Yaqi Xie

Recently, deep multi-agent reinforcement learning (MARL) has shown the promise to solve complex cooperative tasks. Its success is partly because of parameter sharing among agents. However, such sharing may lead agents to behave similarly…

Machine Learning · Computer Science 2021-11-02 Chenghao Li , Tonghan Wang , Chengjie Wu , Qianchuan Zhao , Jun Yang , Chongjie Zhang

We consider the problem of learning to communicate using multi-agent reinforcement learning (MARL). A common approach is to learn off-policy, using data sampled from a replay buffer. However, messages received in the past may not accurately…

Machine Learning · Computer Science 2021-03-02 Sanjeevan Ahilan , Peter Dayan

Discovering successful coordinated behaviors is a central challenge in Multi-Agent Reinforcement Learning (MARL) since it requires exploring a joint action space that grows exponentially with the number of agents. In this paper, we propose…

Machine Learning · Computer Science 2021-10-14 Ammar Fayad , Majd Ibrahim

Flocking control is a challenging problem, where multiple agents, such as drones or vehicles, need to reach a target position while maintaining the flock and avoiding collisions with obstacles and collisions among agents in the environment.…

Machine Learning · Computer Science 2022-09-20 Yunbo Qiu , Yue Jin , Jian Wang , Xudong Zhang

Multi-agent formation as well as obstacle avoidance is one of the most actively studied topics in the field of multi-agent systems. Although some classic controllers like model predictive control (MPC) and fuzzy control achieve a certain…

Systems and Control · Electrical Eng. & Systems 2021-11-16 Yuzi Yan , Xiaoxiang Li , Xinyou Qiu , Jiantao Qiu , Jian Wang , Yu Wang , Yuan Shen

In multi-agent systems, agents possess only local observations of the environment. Communication between teammates becomes crucial for enhancing coordination. Past research has primarily focused on encoding local information into embedding…

Multiagent Systems · Computer Science 2023-11-09 Peihong Yu , Bhoram Lee , Aswin Raghavan , Supun Samarasekara , Pratap Tokekar , James Zachary Hare

Offline reinforcement learning (RL) enables agents to learn policies from fixed datasets, avoiding costly or unsafe environment interactions. However, its effectiveness is often limited by dataset sparsity and the lack of transition overlap…

Artificial Intelligence · Computer Science 2025-07-22 Lu Guo , Yixiang Shan , Zhengbang Zhu , Qifan Liang , Lichang Song , Ting Long , Weinan Zhang , Yi Chang

In Multi-Agent Reinforcement Learning (MARL), specialized channels are often introduced that allow agents to communicate directly with one another. In this paper, we propose an alternative approach whereby agents communicate through an…

Artificial Intelligence · Computer Science 2022-05-26 Dianbo Liu , Vedant Shah , Oussama Boussif , Cristian Meo , Anirudh Goyal , Tianmin Shu , Michael Mozer , Nicolas Heess , Yoshua Bengio

The evolution of metropolitan cities and the increase in travel demands impose stringent requirements on traffic assignment methods. Multi-agent reinforcement learning (MARL) approaches outperform traditional methods in modeling adaptive…

Machine Learning · Computer Science 2025-12-16 Leizhen Wang , Peibo Duan , Cheng Lyu , Zewen Wang , Zhiqiang He , Nan Zheng , Zhenliang Ma

To achieve general intelligence, agents must learn how to interact with others in a shared environment: this is the challenge of multiagent reinforcement learning (MARL). The simplest form is independent reinforcement learning (InRL), where…

Artificial Intelligence · Computer Science 2017-11-08 Marc Lanctot , Vinicius Zambaldi , Audrunas Gruslys , Angeliki Lazaridou , Karl Tuyls , Julien Perolat , David Silver , Thore Graepel

Robot learning tasks are extremely compute-intensive and hardware-specific. Thus the avenues of tackling these challenges, using a diverse dataset of offline demonstrations that can be used to train robot manipulation agents, is very…

The inability to communicate poses a major challenge to coordination in multi-agent reinforcement learning (MARL). Prior work has explored correlating local policies via shared randomness, sometimes in the form of a correlation device, as a…

Multiagent Systems · Computer Science 2026-02-12 John Gardiner , Orlando Romero , Brendan Tivnan , Nicolò Dal Fabbro , George J. Pappas

We introduce hybrid execution in multi-agent reinforcement learning (MARL), a new paradigm in which agents aim to successfully complete cooperative tasks with arbitrary communication levels at execution time by taking advantage of…

Machine Learning · Computer Science 2023-06-06 Pedro P. Santos , Diogo S. Carvalho , Miguel Vasco , Alberto Sardinha , Pedro A. Santos , Ana Paiva , Francisco S. Melo

Cooperative multi-agent reinforcement learning (MARL) has achieved significant results, most notably by leveraging the representation-learning abilities of deep neural networks. However, large centralized approaches quickly become…

Multiagent Systems · Computer Science 2022-12-05 Nikunj Gupta , G Srinivasaraghavan , Swarup Kumar Mohalik , Nishant Kumar , Matthew E. Taylor

We consider the problem of federated offline reinforcement learning (RL), a scenario under which distributed learning agents must collaboratively learn a high-quality control policy only using small pre-collected datasets generated…

Machine Learning · Computer Science 2024-10-07 Desik Rengarajan , Nitin Ragothaman , Dileep Kalathil , Srinivas Shakkottai