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Achieving distributed reinforcement learning (RL) for large-scale cooperative multi-agent systems (MASs) is challenging because: (i) each agent has access to only limited information; (ii) issues on convergence or computational complexity…

Machine Learning · Computer Science 2024-04-15 Gangshan Jing , He Bai , Jemin George , Aranya Chakrabortty , Piyush K. Sharma

Exploration strategy design is one of the challenging problems in reinforcement learning~(RL), especially when the environment contains a large state space or sparse rewards. During exploration, the agent tries to discover novel areas or…

Machine Learning · Computer Science 2019-06-07 Xiao Ma , Shen-Yi Zhao , Wu-Jun Li

Autonomous cyber and cyber-physical systems need to perform decision-making, learning, and control in unknown environments. Such decision-making can be sensitive to multiple factors, including modeling errors, changes in costs, and impacts…

Artificial Intelligence · Computer Science 2023-04-05 Abdullah Al Maruf , Luyao Niu , Bhaskar Ramasubramanian , Andrew Clark , Radha Poovendran

Providing a suitable reward function to reinforcement learning can be difficult in many real world applications. While inverse reinforcement learning (IRL) holds promise for automatically learning reward functions from demonstrations,…

Machine Learning · Computer Science 2019-10-29 Lantao Yu , Tianhe Yu , Chelsea Finn , Stefano Ermon

Exploration efficiency is a challenging problem in multi-agent reinforcement learning (MARL), as the policy learned by confederate MARL depends on the collaborative approach among multiple agents. Another important problem is the less…

Machine Learning · Computer Science 2019-12-30 Qisheng Wang , Qichao Wang

Cooperative multi-agent reinforcement learning (MARL) faces significant scalability issues due to state and action spaces that are exponentially large in the number of agents. As environments grow in size, effective credit assignment…

Artificial Intelligence · Computer Science 2021-09-23 Roy Zohar , Shie Mannor , Guy Tennenholtz

Cooperative multi-agent reinforcement learning (MARL) requires agents to discover joint strategies in a combinatorially large state-action space, yet effective coordination configurations are exceedingly rare. Intrinsic motivation, which…

Multiagent Systems · Computer Science 2026-05-05 Dahyun Oh , Minhyuk Yoon , H. Jin Kim

We consider model-based multi-agent reinforcement learning, where the environment transition model is unknown and can only be learned via expensive interactions with the environment. We propose H-MARL (Hallucinated Multi-Agent Reinforcement…

Machine Learning · Computer Science 2022-07-12 Pier Giuseppe Sessa , Maryam Kamgarpour , Andreas Krause

Reinforcement learning (RL) has emerged as a powerful tool for tackling control problems, but its practical application is often hindered by the complexity arising from intricate reward functions with multiple terms. The reward hypothesis…

Machine Learning · Computer Science 2025-02-11 Kilian Freitag , Kristian Ceder , Rita Laezza , Knut Åkesson , Morteza Haghir Chehreghani

Multi-agent reinforcement learning (MARL) has exploded in popularity in recent years. While numerous approaches have been developed, they can be broadly categorized into three main types: centralized training and execution (CTE),…

Machine Learning · Computer Science 2025-05-22 Christopher Amato

While Reinforcement Learning (RL) achieves tremendous success in sequential decision-making problems of many domains, it still faces key challenges of data inefficiency and the lack of interpretability. Interestingly, many researchers have…

Artificial Intelligence · Computer Science 2023-06-02 Yan Zeng , Ruichu Cai , Fuchun Sun , Libo Huang , Zhifeng Hao

Multi-Agent Reinforcement Learning (MARL) comprises an area of growing interest in the field of machine learning. Despite notable advances, there are still problems that require investigation. The lazy agent pathology is a famous problem in…

Machine Learning · Computer Science 2023-11-07 Rafael Pina , Varuna De Silva , Corentin Artaud

A large amount of work has been done in Multi-Agent Systems (MAS) for modeling and solving problems with multiple interacting agents. However, most LLMs are pretrained independently and not specifically optimized for coordination. Existing…

Artificial Intelligence · Computer Science 2025-12-10 Shuo Liu , Tianle Chen , Zeyu Liang , Xueguang Lyu , Christopher Amato

Recent developments in multi-agent imitation learning have shown promising results for modeling the behavior of human drivers. However, it is challenging to capture emergent traffic behaviors that are observed in real-world datasets. Such…

Cooperative multi-agent reinforcement learning (MARL) approaches tackle the challenge of finding effective multi-agent cooperation strategies for accomplishing individual or shared objectives in multi-agent teams. In real-world scenarios,…

Robotics · Computer Science 2023-10-20 Yasin Findik , Paul Robinette , Kshitij Jerath , S. Reza Ahmadzadeh

Cooperative multi-agent reinforcement learning (c-MARL) is widely applied in safety-critical scenarios, thus the analysis of robustness for c-MARL models is profoundly important. However, robustness certification for c-MARLs has not yet…

Machine Learning · Computer Science 2022-12-23 Ronghui Mu , Wenjie Ruan , Leandro Soriano Marcolino , Gaojie Jin , Qiang Ni

Cooperative multi-agent reinforcement learning (MARL) has made substantial strides in addressing the distributed decision-making challenges. However, as multi-agent systems grow in complexity, gaining a comprehensive understanding of their…

Artificial Intelligence · Computer Science 2023-12-15 Wiem Khlifi , Siddarth Singh , Omayma Mahjoub , Ruan de Kock , Abidine Vall , Rihab Gorsane , Arnu Pretorius

Executing actions in a correlated manner is a common strategy for human coordination that often leads to better cooperation, which is also potentially beneficial for cooperative multi-agent reinforcement learning (MARL). However, the recent…

Multiagent Systems · Computer Science 2023-06-06 Dingyang Chen , Qi Zhang

Recently, deep reinforcement learning (RL) algorithms have made great progress in multi-agent domain. However, due to characteristics of RL, training for complex tasks would be resource-intensive and time-consuming. To meet this challenge,…

Artificial Intelligence · Computer Science 2021-05-26 Zijian Gao , Kele Xu , Bo Ding , Huaimin Wang , Yiying Li , Hongda Jia

Multi-agent Reinforcement learning (MARL) studies the behaviour of multiple learning agents that coexist in a shared environment. MARL is more challenging than single-agent RL because it involves more complex learning dynamics: the…

Artificial Intelligence · Computer Science 2023-04-26 Roger Creus Castanyer