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Mean-Field Control (MFC) is a powerful tool to solve Multi-Agent Reinforcement Learning (MARL) problems. Recent studies have shown that MFC can well-approximate MARL when the population size is large and the agents are exchangeable.…

Machine Learning · Computer Science 2022-06-02 Washim Uddin Mondal , Vaneet Aggarwal , Satish V. Ukkusuri

Real-world multi-agent tasks usually involve dynamic team composition with the emergence of roles, which should also be a key to efficient cooperation in multi-agent reinforcement learning (MARL). Drawing inspiration from the correlation…

Multiagent Systems · Computer Science 2024-03-05 Zican Hu , Zongzhang Zhang , Huaxiong Li , Chunlin Chen , Hongyu Ding , Zhi Wang

Significant advances have recently been achieved in Multi-Agent Reinforcement Learning (MARL) which tackles sequential decision-making problems involving multiple participants. However, MARL requires a tremendous number of samples for…

Multiagent Systems · Computer Science 2024-12-30 Xihuai Wang , Zhicheng Zhang , Weinan Zhang

Federated learning (FL) is a training technique that enables client devices to jointly learn a shared model by aggregating locally-computed models without exposing their raw data. While most of the existing work focuses on improving the FL…

Machine Learning · Computer Science 2022-01-11 Sai Qian Zhang , Jieyu Lin , Qi Zhang

Exploring sparse reward multi-agent reinforcement learning (MARL) environments with traps in a collaborative manner is a complex task. Agents typically fail to reach the goal state and fall into traps, which affects the overall performance…

Artificial Intelligence · Computer Science 2023-06-16 Xuechen Mu , Hankz Hankui Zhuo , Chen Chen , Kai Zhang , Chao Yu , Jianye Hao

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

Cooperation is central to multi-agent reinforcement learning (MARL), yet learned coordination can be fragile when external perturbations disrupt inter-agent interactions. Prior robust MARL methods have primarily considered value-oriented…

Machine Learning · Computer Science 2026-05-19 Sunwoo Lee , Mingu Kang , Yonghyeon Jo , Seungyul Han

Object-centric representations have recently enabled significant progress in tackling relational reasoning tasks. By building a strong object-centric inductive bias into neural architectures, recent efforts have improved generalization and…

Machine Learning · Computer Science 2021-04-20 Wenling Shang , Lasse Espeholt , Anton Raichuk , Tim Salimans

Multi-agent reinforcement learning (MARL) holds great potential but faces robustness challenges due to environmental uncertainty. To address this, distributionally robust Markov games (RMGs) optimize worst-case performance when the…

Machine Learning · Computer Science 2026-05-08 Jingchu Gai , Laixi Shi

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

In cooperative multi-agent reinforcement learning (c-MARL), agents learn to cooperatively take actions as a team to maximize a total team reward. We analyze the robustness of c-MARL to adversaries capable of attacking one of the agents on a…

Machine Learning · Computer Science 2020-03-10 Jieyu Lin , Kristina Dzeparoska , Sai Qian Zhang , Alberto Leon-Garcia , Nicolas Papernot

We develop a Multi-Agent Reinforcement Learning (MARL) method to learn scalable control policies for target tracking. Our method can handle an arbitrary number of pursuers and targets; we show results for tasks consisting up to 1000…

Multiagent Systems · Computer Science 2021-11-11 Christopher D. Hsu , Heejin Jeong , George J. Pappas , Pratik Chaudhari

Multi-Agent Reinforcement Learning (MARL) is a growing research area which gained significant traction in recent years, extending Deep RL applications to a much wider range of problems. A particularly challenging class of problems in this…

Multiagent Systems · Computer Science 2025-09-25 Charles Dansereau , Junior-Samuel Lopez-Yepez , Karthik Soma , Antoine Fagette

Role-based learning is a promising approach to improving the performance of Multi-Agent Reinforcement Learning (MARL). Nevertheless, without manual assistance, current role-based methods cannot guarantee stably discovering a set of roles to…

Artificial Intelligence · Computer Science 2023-04-04 Xianghua Zeng , Hao Peng , Angsheng Li

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

Researchers have integrated exploration techniques into multi-agent reinforcement learning (MARL) algorithms, drawing on their remarkable success in deep reinforcement learning. Nonetheless, exploration in MARL presents a more substantial…

Multiagent Systems · Computer Science 2023-06-13 Jian Tao , Yang Zhang , Yangkun Chen , Xiu Li

Safety and scalability are two critical challenges faced by practical Multi-Agent Systems (MAS). However, existing Multi-Agent Reinforcement Learning (MARL) algorithms that rely solely on reward shaping are ineffective in ensuring safety,…

Multiagent Systems · Computer Science 2025-04-02 Haikuo Du , Fandi Gou , Yunze Cai

While many robotic tasks can be addressed using either centralized single-agent control with full state observation or decentralized multi-agent control, clear criteria for choosing between these approaches remain underexplored. This paper…

Multi-Agent Reinforcement Learning (MARL) is central to robotic systems cooperating in dynamic environments. While prior work has focused on these collaborative settings, adversarial interactions are equally critical for real-world…

Machine Learning · Computer Science 2025-10-03 Isaac Peterson , Christopher Allred , Jacob Morrey , Mario Harper

In this paper, we study the cooperative Multi-Agent Reinforcement Learning (MARL) problems using Reward Machines (RMs) to specify the reward functions such that the prior knowledge of high-level events in a task can be leveraged to…

Artificial Intelligence · Computer Science 2024-03-13 Xuejing Zheng , Chao Yu