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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

Almost all multi-agent reinforcement learning algorithms without communication follow the principle of centralized training with decentralized execution. During centralized training, agents can be guided by the same signals, such as the…

Multiagent Systems · Computer Science 2022-12-08 Zhiwei Xu , Bin Zhang , Dapeng Li , Zeren Zhang , Guangchong Zhou , Hao Chen , Guoliang Fan

This paper introduces a federated learning framework tailored for online combinatorial optimization with bandit feedback. In this setting, agents select subsets of arms, observe noisy rewards for these subsets without accessing individual…

Machine Learning · Computer Science 2024-05-10 Fares Fourati , Mohamed-Slim Alouini , Vaneet Aggarwal

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

This paper studies a cooperative multi-agent multi-armed stochastic bandit problem where agents operate asynchronously -- agent pull times and rates are unknown, irregular, and heterogeneous -- and face the same instance of a K-armed bandit…

Machine Learning · Computer Science 2023-09-01 Yu-Zhen Janice Chen , Lin Yang , Xuchuang Wang , Xutong Liu , Mohammad Hajiesmaili , John C. S. Lui , Don Towsley

We present an approach to reduce the communication required between agents in a Multi-Agent learning system by exploiting the inherent robustness of the underlying Markov Decision Process. We compute so-called robustness surrogate functions…

Multiagent Systems · Computer Science 2022-09-08 Daniel Jarne Ornia , Manuel Mazo

Communication is a important factor that enables agents work cooperatively in multi-agent reinforcement learning (MARL). Most previous work uses continuous message communication whose high representational capacity comes at the expense of…

Machine Learning · Computer Science 2021-02-26 Sheng Li , Yutai Zhou , Ross Allen , Mykel J. Kochenderfer

Nowadays, cooperative multi-agent systems are used to learn how to achieve goals in large-scale dynamic environments. However, learning in these environments is challenging: from the effect of search space size on learning time to…

Multiagent Systems · Computer Science 2022-01-19 Mahnoosh Mahdavimoghaddam , Amin Nikanjam , Monireh Abdoos

In recent years, multi-agent reinforcement learning algorithms have made significant advancements in diverse gaming environments, leading to increased interest in the broader application of such techniques. To address the prevalent…

Multiagent Systems · Computer Science 2024-04-30 Dapeng Li , Hang Dong , Lu Wang , Bo Qiao , Si Qin , Qingwei Lin , Dongmei Zhang , Qi Zhang , Zhiwei Xu , Bin Zhang , Guoliang Fan

Multi-agent reinforcement learning (MARL) problems are challenging due to information asymmetry. To overcome this challenge, existing methods often require high level of coordination or communication between the agents. We consider…

Machine Learning · Computer Science 2021-11-02 Hsu Kao , Chen-Yu Wei , Vijay Subramanian

In this paper, we explore using deep reinforcement learning for problems with multiple agents. Most existing methods for deep multi-agent reinforcement learning consider only a small number of agents. When the number of agents increases,…

Machine Learning · Computer Science 2018-05-24 Arbaaz Khan , Clark Zhang , Daniel D. Lee , Vijay Kumar , Alejandro Ribeiro

Large Language Models (LLMs) have shown remarkable reasoning capabilities in mathematical and scientific tasks. To enhance complex reasoning, multi-agent systems have been proposed to harness the collective intelligence of LLM agents.…

Artificial Intelligence · Computer Science 2025-10-22 Zhenyu Bi , Meng Lu , Yang Li , Swastik Roy , Weijie Guan , Morteza Ziyadi , Xuan Wang

Traditionally, the performance of multi-agent deep reinforcement learning algorithms are demonstrated and validated in gaming environments where we often have a fixed number of agents. In many industrial applications, the number of…

Machine Learning · Computer Science 2022-01-19 Hamed Khorasgani , Haiyan Wang , Hsiu-Khuern Tang , Chetan Gupta

We consider a multi-agent reinforcement learning problem where each agent seeks to maximize a shared reward while interacting with other agents, and they may or may not be able to communicate. Typically the agents do not have access to…

Multiagent Systems · Computer Science 2021-04-26 Alex Tong Lin , Mark J. Debord , Katia Estabridis , Gary Hewer , Guido Montufar , Stanley Osher

We present a new model-based reinforcement learning algorithm, Cooperative Prioritized Sweeping, for efficient learning in multi-agent Markov decision processes. The algorithm allows for sample-efficient learning on large problems by…

Machine Learning · Computer Science 2020-01-22 Eugenio Bargiacchi , Timothy Verstraeten , Diederik M. Roijers , Ann Nowé

This paper considers a distributed reinforcement learning problem in which a network of multiple agents aim to cooperatively maximize the globally averaged return through communication with only local neighbors. A randomized…

Machine Learning · Computer Science 2019-07-09 Yixuan Lin , Kaiqing Zhang , Zhuoran Yang , Zhaoran Wang , Tamer Başar , Romeil Sandhu , Ji Liu

We consider online reinforcement learning in episodic Markov decision process (MDP) with unknown transition function and stochastic rewards drawn from some fixed but unknown distribution. The learner aims to learn the optimal policy and…

Machine Learning · Computer Science 2024-03-12 Vincent Leon , S. Rasoul Etesami

This work develops a fully decentralized multi-agent algorithm for policy evaluation. The proposed scheme can be applied to two distinct scenarios. In the first scenario, a collection of agents have distinct datasets gathered following…

Machine Learning · Computer Science 2019-08-13 Lucas Cassano , Kun Yuan , Ali H. Sayed

We propose a novel formulation of the "effectiveness problem" in communications, put forth by Shannon and Weaver in their seminal work [2], by considering multiple agents communicating over a noisy channel in order to achieve better…

Signal Processing · Electrical Eng. & Systems 2021-04-02 Tze-Yang Tung , Szymon Kobus , Joan Roig Pujol , Deniz Gunduz

With artificial intelligence systems becoming ubiquitous in our society, its designers will soon have to start to consider its social dimension, as many of these systems will have to interact among them to work efficiently. With this in…

Artificial Intelligence · Computer Science 2020-06-23 Santiago Cuervo , Marco Alzate