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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

For Industry 4.0 Revolution, cooperative autonomous mobility systems are widely used based on multi-agent reinforcement learning (MARL). However, the MARL-based algorithms suffer from huge parameter utilization and convergence difficulties…

Multiagent Systems · Computer Science 2023-08-04 Soohyun Park , Jae Pyoung Kim , Chanyoung Park , Soyi Jung , Joongheon Kim

Multi-Agent Reinforcement Learning (MARL) is a branch of machine learning in which agents interact and learn optimal policies through trial and error, addressing complex scenarios where multiple agents interact and learn in the same…

Human-Computer Interaction · Computer Science 2025-12-03 Changhee Lee , Jeongmin Rhee , DongHwa Shin

In cooperative Multi-Agent Reinforcement Learning (MARL), it is a common practice to tune hyperparameters in ideal simulated environments to maximize cooperative performance. However, policies tuned for cooperation often fail to maintain…

Multi-task multi-agent reinforcement learning (MT-MARL) has recently gained attention for its potential to enhance MARL's adaptability across multiple tasks. However, it is challenging for existing multi-task learning methods to handle…

Robotics · Computer Science 2025-07-10 Guobin Zhu , Rui Zhou , Wenkang Ji , Hongyin Zhang , Donglin Wang , Shiyu Zhao

Recent advances in multi-agent reinforcement learning (MARL) allow agents to coordinate their behaviors in complex environments. However, common MARL algorithms still suffer from scalability and sparse reward issues. One promising approach…

Artificial Intelligence · Computer Science 2023-02-08 Rundong Wang , Longtao Zheng , Wei Qiu , Bowei He , Bo An , Zinovi Rabinovich , Yujing Hu , Yingfeng Chen , Tangjie Lv , Changjie Fan

Multi-agent systems are trained to maximize shared cost objectives, which typically reflect system-level efficiency. However, in the resource-constrained environments of mobility and transportation systems, efficiency may be achieved at the…

Multiagent Systems · Computer Science 2024-10-30 Jasmine Jerry Aloor , Siddharth Nayak , Sydney Dolan , Hamsa Balakrishnan

We present a reinforcement learning strategy for use in multi-agent foraging systems in which the learning is centralised to a single agent and its model is periodically disseminated among the population of non-learning agents. In a domain…

Multiagent Systems · Computer Science 2026-01-21 Ian O'Flynn , Harun Šiljak

Multi-agent reinforcement learning (MARL) plays a pivotal role in tackling real-world challenges. However, the seamless transition of trained policies from simulations to real-world requires it to be robust to various environmental…

Machine Learning · Computer Science 2023-10-16 Aakriti Agrawal , Rohith Aralikatti , Yanchao Sun , Furong Huang

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 multi-agent reinforcement learning (MARL) for cooperative communication and coordination tasks. MARL agents can be brittle because they can overfit their training partners' policies. This overfitting can produce agents that…

Artificial Intelligence · Computer Science 2022-03-08 Tessa van der Heiden , Herke van Hoof , Efstratios Gavves , Christoph Salge

One of the notorious issues for Reinforcement Learning (RL) is poor sample efficiency. Compared to single agent RL, the sample efficiency for Multi-Agent Reinforcement Learning (MARL) is more challenging because of its inherent partial…

Machine Learning · Computer Science 2024-04-16 Linjie Xu , Zichuan Liu , Alexander Dockhorn , Diego Perez-Liebana , Jinyu Wang , Lei Song , Jiang Bian

Reinforcement learning (RL) algorithms have been around for decades and employed to solve various sequential decision-making problems. These algorithms however have faced great challenges when dealing with high-dimensional environments. The…

Machine Learning · Computer Science 2020-04-01 Thanh Thi Nguyen , Ngoc Duy Nguyen , Saeid Nahavandi

In multi-agent reinforcement learning (MARL), ensuring robustness against unpredictable or worst-case actions by allies is crucial for real-world deployment. Existing robust MARL methods either approximate or enumerate all possible threat…

Machine Learning · Computer Science 2024-05-22 Simin Li , Ruixiao Xu , Jingqiao Xiu , Yuwei Zheng , Pu Feng , Yaodong Yang , Xianglong Liu

Inferring reward functions from demonstrations is a key challenge in reinforcement learning (RL), particularly in multi-agent RL (MARL), where large joint state-action spaces and complex inter-agent interactions complicate the task. While…

Machine Learning · Computer Science 2025-02-03 The Viet Bui , Tien Mai , Hong Thanh Nguyen

In this paper, we study cooperative multi-agent reinforcement learning (MARL) where the joint reward exhibits submodularity, which is a natural property capturing diminishing marginal returns when adding agents to a team. Unlike standard…

Machine Learning · Computer Science 2026-03-10 Wenjing Chen , Chengyuan Qian , Shuo Xing , Yi Zhou , Victoria Crawford

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

Training a multi-agent reinforcement learning (MARL) algorithm is more challenging than training a single-agent reinforcement learning algorithm, because the result of a multi-agent task strongly depends on the complex interactions among…

Machine Learning · Computer Science 2021-01-19 Heechang Ryu , Hayong Shin , Jinkyoo Park

This work studies the application of Multi-Agent Reinforcement Learning (MARL) to decentralized control of unmanned aerial vehicles to relay a critical data package to a known position. For this purpose, a family of deterministic games is…

Systems and Control · Electrical Eng. & Systems 2026-05-11 Mika Persson , Jonas Lidman , Jacob Ljungberg , Samuel Sandelius , Adam Andersson

We study the problem of online multi-agent reinforcement learning (MARL) in environments with sparse rewards, where reward feedback is not provided at each interaction but only revealed at the end of a trajectory. This setting, though…

Machine Learning · Computer Science 2025-09-29 The Viet Bui , Tien Mai , Hong Thanh Nguyen