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Communication is essential for the collective execution of complex tasks by human agents, motivating interest in communication mechanisms for multi-agent reinforcement learning (MARL). However, existing communication protocols in MARL are…

Machine Learning · Computer Science 2026-01-26 Maciej Wojtala , Bogusz Stefańczyk , Dominik Bogucki , Łukasz Lepak , Jakub Strykowski , Paweł Wawrzyński

Multi-Agent Reinforcement Learning (MARL) has emerged as a foundational approach for addressing diverse, intelligent control tasks in various scenarios like the Internet of Vehicles, Internet of Things, and Unmanned Aerial Vehicles.…

Multiagent Systems · Computer Science 2024-10-15 Xiaoxue Yu , Rongpeng Li , Chengchao Liang , Zhifeng Zhao

Advances in multi-agent reinforcement learning (MARL) enable sequential decision making for a range of exciting multi-agent applications such as cooperative AI and autonomous driving. Explaining agent decisions is crucial for improving…

Artificial Intelligence · Computer Science 2022-05-24 Kayla Boggess , Sarit Kraus , Lu Feng

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

Multi-agent reinforcement learning is a promising research area that extends established reinforcement learning approaches to problems formulated as multi-agent systems. Recently, a multitude of communication methods have been introduced to…

Multiagent Systems · Computer Science 2026-01-21 Christoph Wittner

We consider the problem setting in which multiple autonomous agents must cooperatively navigate and perform tasks in an unknown, communication-constrained environment. Traditional multi-agent reinforcement learning (MARL) approaches assume…

Multiagent Systems · Computer Science 2026-05-20 Sydney Dolan , Siddharth Nayak , Jasmine Jerry Aloor , Hamsa Balakrishnan

Communication is an effective mechanism for coordinating the behaviors of multiple agents, broadening their views of the environment, and to support their collaborations. In the field of multi-agent deep reinforcement learning (MADRL),…

Multiagent Systems · Computer Science 2024-10-21 Changxi Zhu , Mehdi Dastani , Shihan Wang

Communication is supposed to improve multi-agent collaboration and overall performance in cooperative Multi-agent reinforcement learning (MARL). However, such improvements are prevalently limited in practice since most existing…

Multiagent Systems · Computer Science 2022-12-06 Tingting Yuan , Hwei-Ming Chung , Jie Yuan , Xiaoming Fu

Multi-agent reinforcement learning (MARL) has recently received considerable attention due to its applicability to a wide range of real-world applications. However, achieving efficient communication among agents has always been an…

Machine Learning · Computer Science 2019-11-04 Sai Qian Zhang , Qi Zhang , Jieyu Lin

This paper proposes an exploration technique for multi-agent reinforcement learning (MARL) with graph-based communication among agents. We assume the individual rewards received by the agents are independent of the actions by the other…

Machine Learning · Computer Science 2025-08-11 Ainur Zhaikhan , Ali H. Sayed

A challenge in reinforcement learning (RL) is minimizing the cost of sampling associated with exploration. Distributed exploration reduces sampling complexity in multi-agent RL (MARL). We investigate the benefits to performance in MARL when…

Machine Learning · Computer Science 2022-05-03 Justin Lidard , Udari Madhushani , Naomi Ehrich Leonard

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

Emergent communication enables partially observant Autonomous Mobile Robots (AMRs) to coordinate effectively in decentralized multi-agent reinforcement learning (MARL) settings. However, existing approaches often struggle with unstable…

Robotics · Computer Science 2026-05-28 Mahmoud Abouelyazid , Eman Hammad

Communication is one of the effective means to improve the learning of cooperative policy in multi-agent systems. However, in most real-world scenarios, lossy communication is a prevalent issue. Existing multi-agent reinforcement learning…

Artificial Intelligence · Computer Science 2026-03-11 Guang Yang , Tianpei Yang , Jingwen Qiao , Yanqing Wu , Jing Huo , Xingguo Chen , Yang Gao

Most real-world domains can be formulated as multi-agent (MA) systems. Intentionality sharing agents can solve more complex tasks by collaborating, possibly in less time. True cooperative actions are beneficial for egoistic and collective…

Artificial Intelligence · Computer Science 2022-04-26 Philipp Dominic Siedler

Many scenarios in mobility and traffic involve multiple different agents that need to cooperate to find a joint solution. Recent advances in behavioral planning use Reinforcement Learning to find effective and performant behavior…

Artificial Intelligence · Computer Science 2022-08-03 Lukas M. Schmidt , Johanna Brosig , Axel Plinge , Bjoern M. Eskofier , Christopher Mutschler

Real-world multi-agent reinforcement learning (MARL) systems must often operate under stale observations, stochastic communication delays, and intermittent packet loss. Policies trained under idealized synchronous conditions frequently…

Multiagent Systems · Computer Science 2026-05-27 Maxim Mednikov , Oren Gal

Multi-Agent Systems (MAS) excel at accomplishing complex objectives through the collaborative efforts of individual agents. Among the methodologies employed in MAS, Multi-Agent Reinforcement Learning (MARL) stands out as one of the most…

Robotics · Computer Science 2025-07-23 Chenhao Yao , Zike Yuan , Xiaoxu Liu , Chi Zhu

Effective collaboration in multi-agent systems requires communicating goals and intentions between agents. Current agent frameworks often suffer from dependencies on single-agent execution and lack robust inter-module communication,…

Computation and Language · Computer Science 2024-07-18 Xihe Qiu , Haoyu Wang , Xiaoyu Tan , Chao Qu , Yujie Xiong , Yuan Cheng , Yinghui Xu , Wei Chu , Yuan Qi

We propose a targeted communication architecture for multi-agent reinforcement learning, where agents learn both what messages to send and whom to address them to while performing cooperative tasks in partially-observable environments. This…

Machine Learning · Computer Science 2020-02-25 Abhishek Das , Théophile Gervet , Joshua Romoff , Dhruv Batra , Devi Parikh , Michael Rabbat , Joelle Pineau