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Training a multi-agent reinforcement learning (MARL) model with a sparse reward is generally difficult because numerous combinations of interactions among agents induce a certain outcome (i.e., success or failure). Earlier studies have…

Machine Learning · Computer Science 2022-02-08 Heechang Ryu , Hayong Shin , Jinkyoo Park

Recent years have witnessed a tremendous improvement of deep reinforcement learning. However, a challenging problem is that an agent may suffer from inefficient exploration, particularly for on-policy methods. Previous exploration methods…

Machine Learning · Computer Science 2020-02-17 Ling Pan , Qingpeng Cai , Longbo Huang

Reinforcement Learning has emerged as a strong alternative to solve optimization tasks efficiently. The use of these algorithms highly depends on the feedback signals provided by the environment in charge of informing about how good (or…

Machine Learning · Computer Science 2022-12-01 Alain Andres , Esther Villar-Rodriguez , Javier Del Ser

Multi-agent reinforcement learning (MARL) methods have achieved state-of-the-art results on a range of multi-agent tasks. Yet, MARL algorithms typically require significantly more environment interactions than their single-agent…

Systems and Control · Electrical Eng. & Systems 2026-03-17 Tom Danino , Nahum Shimkin

Reinforcement Learning (RL) agents often struggle with inefficient exploration, particularly in environments with sparse rewards. Traditional exploration strategies can lead to slow learning and suboptimal performance because agents fail to…

Machine Learning · Computer Science 2026-03-31 Gaurav Chaudhary , Laxmidhar Behera , Washim Uddin Mondal

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

Value-based methods of multi-agent reinforcement learning (MARL), especially the value decomposition methods, have been demonstrated on a range of challenging cooperative tasks. However, current methods pay little attention to the…

Machine Learning · Computer Science 2021-02-12 Xiaoteng Ma , Yiqin Yang , Chenghao Li , Yiwen Lu , Qianchuan Zhao , Yang Jun

Learning to cooperate in distributed partially observable environments with no communication abilities poses significant challenges for multi-agent deep reinforcement learning (MARL). This paper addresses key concerns in this domain,…

In human society, the conflict between self-interest and collective well-being often obstructs efforts to achieve shared welfare. Related concepts like the Tragedy of the Commons and Social Dilemmas frequently manifest in our daily lives.…

Multiagent Systems · Computer Science 2025-06-17 Yue Jin , Shuangqing Wei , Giovanni Montana

Recently, intent-based management has received good attention in telecom networks owing to stringent performance requirements for many of the use cases. Several approaches in the literature employ traditional closed-loop driven methods to…

Machine Learning · Computer Science 2022-08-29 Satheesh K. Perepu , Jean P. Martins , Ricardo Souza S , Kaushik Dey

Navigating safely and efficiently in dense and heterogeneous traffic scenarios is challenging for autonomous vehicles (AVs) due to their inability to infer the behaviors or intentions of nearby drivers. In this work, we introduce a…

Multiagent Systems · Computer Science 2023-08-22 Xiyang Wu , Rohan Chandra , Tianrui Guan , Amrit Singh Bedi , Dinesh Manocha

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

Multi-agent systems require effective coordination between groups and individuals to achieve common goals. However, current multi-agent reinforcement learning (MARL) methods primarily focus on improving individual policies and do not…

Multiagent Systems · Computer Science 2023-07-31 Jingqing Ruan , Xiaotian Hao , Dong Li , Hangyu Mao

Multi-agent Reinforcement Learning (MARL) is emerging as a key framework for various sequential decision-making and control tasks. Unlike their single-agent counterparts, multi-agent systems necessitate successful cooperation among the…

Multiagent Systems · Computer Science 2026-03-13 Jahir Sadik Monon , Deeparghya Dutta Barua , Md. Mosaddek Khan

Multiagent reinforcement learning (MARL) can solve complex cooperative tasks. However, the efficiency of existing MARL methods relies heavily on well-defined reward functions. Multiagent tasks with sparse reward feedback are especially…

Artificial Intelligence · Computer Science 2022-08-08 Qingxu Fu , Tenghai Qiu , Zhiqiang Pu , Jianqiang Yi , Wanmai Yuan

Multi-agent deep reinforcement learning (MADRL) problems often encounter the challenge of sparse rewards. This challenge becomes even more pronounced when coordination among agents is necessary. As performance depends not only on one…

Multiagent Systems · Computer Science 2024-02-07 Maxime Toquebiau , Nicolas Bredeche , Faïz Benamar , Jae-Yun Jun

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

Cooperative multi-agent reinforcement learning (c-MARL) is widely applied in safety-critical scenarios, thus the analysis of robustness for c-MARL models is profoundly important. However, robustness certification for c-MARLs has not yet…

Machine Learning · Computer Science 2022-12-23 Ronghui Mu , Wenjie Ruan , Leandro Soriano Marcolino , Gaojie Jin , Qiang Ni

In multi-agent reinforcement learning (MARL), effective exploration is critical, especially in sparse reward environments. Although introducing global intrinsic rewards can foster exploration in such settings, it often complicates credit…

Machine Learning · Computer Science 2024-05-29 Xinran Li , Zifan Liu , Shibo Chen , Jun Zhang

Exploration is a fundamental aspect of reinforcement learning (RL), and its effectiveness is a deciding factor in the performance of RL algorithms, especially when facing sparse extrinsic rewards. Recent studies have shown the effectiveness…

Machine Learning · Computer Science 2023-05-19 Shanchuan Wan , Yujin Tang , Yingtao Tian , Tomoyuki Kaneko