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A central problem in the theory of multi-agent reinforcement learning (MARL) is to understand what structural conditions and algorithmic principles lead to sample-efficient learning guarantees, and how these considerations change as we move…

Machine Learning · Computer Science 2023-05-02 Dylan J. Foster , Dean P. Foster , Noah Golowich , Alexander Rakhlin

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 reinforcement learning (MARL) provides a framework for problems involving multiple interacting agents. Despite apparent similarity to the single-agent case, multi-agent problems are often harder to train and analyze…

Machine Learning · Computer Science 2024-04-04 Michał Zawalski , Błażej Osiński , Henryk Michalewski , Piotr Miłoś

Multi-Agent Reinforcement Learning (MARL) is a promising area of research that can model and control multiple, autonomous decision-making agents. During online training, MARL algorithms involve performance-intensive computations such as…

Multiagent Systems · Computer Science 2023-02-13 Kailash Gogineni , Peng Wei , Tian Lan , Guru Venkataramani

Multi-agent reinforcement learning (MARL) faces challenges in coordinating agents due to complex interdependencies within multi-agent systems. Most MARL algorithms use the simultaneous decision-making paradigm but ignore the action-level…

Machine Learning · Computer Science 2025-02-25 Kun Hu , Muning Wen , Xihuai Wang , Shao Zhang , Yiwei Shi , Minne Li , Minglong Li , Ying Wen

Offline multi-agent reinforcement learning is challenging due to the coupling effect of both distribution shift issue common in offline setting and the high dimension issue common in multi-agent setting, making the action…

Artificial Intelligence · Computer Science 2023-09-25 Jianzhun Shao , Yun Qu , Chen Chen , Hongchang Zhang , Xiangyang Ji

Safe reinforcement learning (RL) is crucial for real-world applications, and multi-agent interactions introduce additional safety challenges. While Probabilistic Logic Shields (PLS) has been a powerful proposal to enforce safety in…

Artificial Intelligence · Computer Science 2025-08-28 Satchit Chatterji , Erman Acar

Prior authorization (PA) requires interpretation of complex and fragmented coverage policies, yet existing retrieval-augmented systems rely on static top-$K$ strategies with fixed numbers of retrieved sections. Such fixed retrieval can be…

Information Retrieval · Computer Science 2026-04-08 Ruslan Sharifullin , Maxim Gorshkov , Hannah Clay

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…

Multiagent Systems · Computer Science 2023-02-23 Pengyi Li , Hongyao Tang , Tianpei Yang , Xiaotian Hao , Tong Sang , Yan Zheng , Jianye Hao , Matthew E. Taylor , Wenyuan Tao , Zhen Wang , Fazl Barez

We present a Reinforcement Learning (RL) based framework for optimizing long-term discounted reward problems with large combinatorial action space and state dependent constraints. These characteristics are common to many operations…

Machine Learning · Computer Science 2025-01-09 Pavithra Harsha , Ashish Jagmohan , Jayant Kalagnanam , Brian Quanz , Divya Singhvi

Many advances in cooperative multi-agent reinforcement learning (MARL) are based on two common design principles: value decomposition and parameter sharing. A typical MARL algorithm of this fashion decomposes a centralized Q-function into…

Artificial Intelligence · Computer Science 2022-08-09 Wei Fu , Chao Yu , Zelai Xu , Jiaqi Yang , Yi Wu

It has long been recognized that multi-agent reinforcement learning (MARL) faces significant scalability issues due to the fact that the size of the state and action spaces are exponentially large in the number of agents. In this paper, we…

Optimization and Control · Mathematics 2020-06-12 Guannan Qu , Yiheng Lin , Adam Wierman , Na Li

Non-stationarity poses a fundamental challenge in Multi-Agent Reinforcement Learning (MARL), arising from agents simultaneously learning and altering their policies. This creates a non-stationary environment from the perspective of each…

Robotics · Computer Science 2024-10-22 Jianye Xu , Omar Sobhy , Bassam Alrifaee

Efficient traffic control (TSC) is essential for urban mobility, but traditional systems struggle to handle the complexity of real-world traffic. Multi-agent Reinforcement Learning (MARL) offers adaptive solutions, but online MARL requires…

Artificial Intelligence · Computer Science 2025-03-19 Rohit Bokade , Xiaoning Jin

As multi-agent reinforcement learning (MARL) systems are increasingly deployed throughout society, it is imperative yet challenging for users to understand the emergent behaviors of MARL agents in complex environments. This work presents an…

Artificial Intelligence · Computer Science 2023-05-18 Kayla Boggess , Sarit Kraus , Lu Feng

Conservatism has led to significant progress in offline reinforcement learning (RL) where an agent learns from pre-collected datasets. However, as many real-world scenarios involve interaction among multiple agents, it is important to…

Machine Learning · Computer Science 2022-04-05 Ling Pan , Longbo Huang , Tengyu Ma , Huazhe Xu

Decentralized learning has shown great promise for cooperative multi-agent reinforcement learning (MARL). However, non-stationarity remains a significant challenge in fully decentralized learning. In the paper, we tackle the…

Machine Learning · Computer Science 2023-02-08 Kefan Su , Siyuan Zhou , Jiechuan Jiang , Chuang Gan , Xiangjun Wang , Zongqing Lu

We address the challenge of learning factored policies in cooperative MARL scenarios. In particular, we consider the situation in which a team of agents collaborates to optimize a common cost. The goal is to obtain factored policies that…

Machine Learning · Computer Science 2021-04-28 Lucas Cassano , Ali H. Sayed

Recent advances in multi-agent reinforcement learning (MARL) have created opportunities to solve complex real-world tasks. Cybersecurity is a notable application area, where defending networks against sophisticated adversaries remains a…

Machine Learning · Computer Science 2025-09-08 Aditya Vikram Singh , Ethan Rathbun , Emma Graham , Lisa Oakley , Simona Boboila , Alina Oprea , Peter Chin

Reinforcement learning is time-consuming for complex tasks due to the need for large amounts of training data. Recent advances in GPU-based simulation, such as Isaac Gym, have sped up data collection thousands of times on a commodity GPU.…

Machine Learning · Computer Science 2023-07-25 Zechu Li , Tao Chen , Zhang-Wei Hong , Anurag Ajay , Pulkit Agrawal