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Multi-agent systems (MAS) are widely prevalent and crucially important in numerous real-world applications, where multiple agents must make decisions to achieve their objectives in a shared environment. Despite their ubiquity, the…

Multiagent Systems · Computer Science 2024-07-04 Dom Huh , Prasant Mohapatra

We propose Q-learning with Adjoint Matching (QAM), a novel TD-based reinforcement learning (RL) algorithm that tackles a long-standing challenge in continuous-action RL: efficient optimization of an expressive diffusion or flow-matching…

Machine Learning · Computer Science 2026-05-20 Qiyang Li , Sergey Levine

A large amount of work has been done in Multi-Agent Systems (MAS) for modeling and solving problems with multiple interacting agents. However, most LLMs are pretrained independently and not specifically optimized for coordination. Existing…

Artificial Intelligence · Computer Science 2025-12-10 Shuo Liu , Tianle Chen , Zeyu Liang , Xueguang Lyu , Christopher Amato

Finding the optimal signal timing strategy is a difficult task for the problem of large-scale traffic signal control (TSC). Multi-Agent Reinforcement Learning (MARL) is a promising method to solve this problem. However, there is still room…

Machine Learning · Computer Science 2021-09-14 Xiaoqiang Wang , Liangjun Ke , Zhimin Qiao , Xinghua Chai

Multi-agent reinforcement learning (MARL) requires agents to explore within a vast joint action space to find joint actions that lead to coordination. Existing value-based MARL algorithms commonly rely on random exploration, such as…

Multiagent Systems · Computer Science 2025-02-10 Lukas Schäfer , Oliver Slumbers , Stephen McAleer , Yali Du , Stefano V. Albrecht , David Mguni

This study introduces a quantum inspired framework for optimizing the exploration exploitation tradeoff in multiagent reinforcement learning, applied to UAVassisted 6G network deployment. We consider a cooperative scenario where ten…

Artificial Intelligence · Computer Science 2025-12-25 Mazyar Taghavi , Javad Vahidi

Multi-agent reinforcement learning (MARL) under partial observability has long been considered challenging, primarily due to the requirement for each agent to maintain a belief over all other agents' local histories -- a domain that…

Artificial Intelligence · Computer Science 2020-08-18 Weichao Mao , Kaiqing Zhang , Erik Miehling , Tamer Başar

Connected and autonomous vehicles across land, water, and air must often operate in dynamic, unpredictable environments with limited communication, no centralized control, and partial observability. These real-world constraints pose…

Multiagent Systems · Computer Science 2025-11-18 Hung Du , Hy Nguyen , Srikanth Thudumu , Rajesh Vasa , Kon Mouzakis

Multi-agent reinforcement learning (MARL) algorithms often suffer from an exponential sample complexity dependence on the number of agents, a phenomenon known as \emph{the curse of multiagents}. In this paper, we address this challenge by…

Machine Learning · Computer Science 2022-02-01 Weichao Mao , Lin F. Yang , Kaiqing Zhang , Tamer Başar

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

This paper concerns imitation learning (IL) (i.e, the problem of learning to mimic expert behaviors from demonstrations) in cooperative multi-agent systems. The learning problem under consideration poses several challenges, characterized by…

Machine Learning · Computer Science 2023-10-11 The Viet Bui , Tien Mai , Thanh Hong Nguyen

We hypothesize that due to the greedy nature of learning in multi-modal deep neural networks, these models tend to rely on just one modality while under-fitting the other modalities. Such behavior is counter-intuitive and hurts the models'…

Machine Learning · Computer Science 2022-09-20 Nan Wu , Stanisław Jastrzębski , Kyunghyun Cho , Krzysztof J. Geras

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

Distributed optimization is pivotal for large-scale signal processing and machine learning, yet communication overhead remains a major bottleneck. Low-rank gradient compression, in which the transmitted gradients are approximated by…

Machine Learning · Computer Science 2025-10-21 Chuyan Chen , Yutong He , Pengrui Li , Weichen Jia , Kun Yuan

Multi-Agent Reinforcement Learning (MARL) has recently emerged as a significant area of research. However, MARL evaluation often lacks systematic diversity, hindering a comprehensive understanding of algorithms' capabilities. In particular,…

Mixed-precision quantization improves the budget--accuracy trade-off for large language models (LLMs) by allocating more bits to sensitive modules. However, automating this allocation at LLM scale faces a unique combination of constraints:…

Machine Learning · Computer Science 2026-05-19 Zhangyang Yao , Haiyan Zhao , Haoyu Wang , Tianbo Huang , Lihua Zhang , Xu Han

Universal Multimodal Retrieval (UMR) aims to enable search across various modalities using a unified model, where queries and candidates can consist of pure text, images, or a combination of both. Previous work has attempted to adopt…

Computation and Language · Computer Science 2025-04-02 Xin Zhang , Yanzhao Zhang , Wen Xie , Mingxin Li , Ziqi Dai , Dingkun Long , Pengjun Xie , Meishan Zhang , Wenjie Li , Min Zhang

We propose a multimodal (vision-and-language) benchmark for cooperative and heterogeneous multi-agent learning. We introduce a benchmark multimodal dataset with tasks involving collaboration between multiple simulated heterogeneous robots…

Artificial Intelligence · Computer Science 2022-08-30 Vasu Sharma , Prasoon Goyal , Kaixiang Lin , Govind Thattai , Qiaozi Gao , Gaurav S. Sukhatme

In recent years, $Q$-learning has become indispensable for model-free reinforcement learning (MFRL). However, it suffers from well-known problems such as under- and overestimation bias of the value, which may adversely affect the policy…

Machine Learning · Computer Science 2021-02-09 Youngmin Oh , Jinwoo Shin , Eunho Yang , Sung Ju Hwang

Generative adversarial imitation learning (GAIL) has shown promising results by taking advantage of generative adversarial nets, especially in the field of robot learning. However, the requirement of isolated single modal demonstrations…

Machine Learning · Computer Science 2020-05-25 Cong Fei , Bin Wang , Yuzheng Zhuang , Zongzhang Zhang , Jianye Hao , Hongbo Zhang , Xuewu Ji , Wulong Liu