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Contrastive learning (CL) continuously achieves significant breakthroughs across multiple domains. However, the most common InfoNCE-based methods suffer from some dilemmas, such as \textit{uniformity-tolerance dilemma} (UTD) and…

Machine Learning · Computer Science 2023-06-13 Zizheng Huang , Haoxing Chen , Ziqi Wen , Chao Zhang , Huaxiong Li , Bo Wang , Chunlin Chen

Many cooperative multi-agent problems require agents to learn individual tasks while contributing to the collective success of the group. This is a challenging task for current state-of-the-art multi-agent reinforcement algorithms that are…

Multiagent Systems · Computer Science 2020-03-25 Hassam Ullah Sheikh , Ladislau Bölöni

This paper studies fully decentralized cooperative multi-agent reinforcement learning, where each agent solely observes the states, its local actions, and the shared rewards. The inability to access other agents' actions often leads to…

Machine Learning · Computer Science 2026-05-12 Chao Li , Bingkun Bao , Yang Gao

Despite substantial progress in applying neural networks (NN) to multi-agent reinforcement learning (MARL) areas, they still largely suffer from a lack of transparency and interoperability. However, its implicit cooperative mechanism is not…

Artificial Intelligence · Computer Science 2025-07-29 Zhonghan Ge , Yuanyang Zhu , Chunlin Chen

Automated control of personalized multiple anesthetics in clinical Total Intravenous Anesthesia (TIVA) is crucial yet challenging. Current systems, including target-controlled infusion (TCI) and closed-loop systems, either rely on…

Systems and Control · Electrical Eng. & Systems 2025-08-15 Huijie Li , Yide Yu , Si Shi , Anmin Hu , Jian Huo , Wei Lin , Chaoran Wu , Wuman Luo

Facial action unit (AU) detection, aiming to classify AU present in the facial image, has long suffered from insufficient AU annotations. In this paper, we aim to mitigate this data scarcity issue by learning AU representations from a large…

Computer Vision and Pattern Recognition · Computer Science 2024-03-07 Yong Li , Shiguang Shan

Recent works have demonstrated convolutional neural networks are vulnerable to adversarial examples, i.e., inputs to machine learning models that an attacker has intentionally designed to cause the models to make a mistake. To improve the…

Computer Vision and Pattern Recognition · Computer Science 2020-05-12 Xianxu Hou , Jingxin Liu , Bolei Xu , Xiaolong Wang , Bozhi Liu , Guoping Qiu

Cooperative multi-agent reinforcement learning (MARL) has made prominent progress in recent years. For training efficiency and scalability, most of the MARL algorithms make all agents share the same policy or value network. However, in many…

Machine Learning · Computer Science 2022-11-07 Mingyu Yang , Jian Zhao , Xunhan Hu , Wengang Zhou , Jiangcheng Zhu , Houqiang Li

Volt-VAR control (VVC) is a critical application in active distribution network management system to reduce network losses and improve voltage profile. To remove dependency on inaccurate and incomplete network models and enhance resiliency…

Systems and Control · Electrical Eng. & Systems 2020-07-08 Yuanqi Gao , Wei Wang , Nanpeng Yu

Controlling the behavioral diversity is a pivotal challenge in multi-agent reinforcement learning (MARL), particularly in complex collaborative scenarios. While existing methods attempt to regulate behavioral diversity by directly…

Artificial Intelligence · Computer Science 2026-03-03 Shuocun Yang , Huawen Hu , Xuan Liu , Yincheng Yao , Enze Shi , Shu Zhang

Visual Question Answering (VQA) based on multi-modal data facilitates real-life applications such as home robots and medical diagnoses. One significant challenge is to devise a robust decentralized learning framework for various client…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Yuwei Sun , Hideya Ochiai

Unsupervised Re-ID methods aim at learning robust and discriminative features from unlabeled data. However, existing methods often ignore the relationship between module parameters of Re-ID framework and feature distributions, which may…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Ziqi He , Mengjia Xue , Yunhao Du , Zhicheng Zhao , Fei Su

Real-world multi-agent tasks usually involve dynamic team composition with the emergence of roles, which should also be a key to efficient cooperation in multi-agent reinforcement learning (MARL). Drawing inspiration from the correlation…

Multiagent Systems · Computer Science 2024-03-05 Zican Hu , Zongzhang Zhang , Huaxiong Li , Chunlin Chen , Hongyu Ding , Zhi Wang

Cooperative multi-agent reinforcement learning (MARL) is a challenging task, as agents must learn complex and diverse individual strategies from a shared team reward. However, existing methods struggle to distinguish and exploit important…

Multiagent Systems · Computer Science 2023-05-26 Xunhan Hu , Jian Zhao , Wengang Zhou , Ruili Feng , Houqiang Li

Recent works in self-supervised learning have shown impressive results on single-object images, but they struggle to perform well on complex multi-object images as evidenced by their poor visual grounding. To demonstrate this concretely, we…

Computer Vision and Pattern Recognition · Computer Science 2023-06-27 Aishwarya Agarwal , Srikrishna Karanam , Balaji Vasan Srinivasan

Cooperative multi-agent systems can be naturally used to model many real world problems, such as network packet routing and the coordination of autonomous vehicles. There is a great need for new reinforcement learning methods that can…

Artificial Intelligence · Computer Science 2024-12-12 Jakob Foerster , Gregory Farquhar , Triantafyllos Afouras , Nantas Nardelli , Shimon Whiteson

Collaborative learning enables distributed clients to learn a shared model for prediction while keeping the training data local on each client. However, existing collaborative learning methods require fully-labeled data for training, which…

Machine Learning · Computer Science 2022-04-26 Yawen Wu , Zhepeng Wang , Dewen Zeng , Meng Li , Yiyu Shi , Jingtong Hu

This paper presents a novel approach to Multi-Agent Reinforcement Learning (MARL) that combines cooperative task decomposition with the learning of reward machines (RMs) encoding the structure of the sub-tasks. The proposed method helps…

Artificial Intelligence · Computer Science 2025-02-17 Leo Ardon , Daniel Furelos-Blanco , Alessandra Russo

In recent years, the use of edge information provided by knowledge graphs together with the advantages of higher-order connectivity in graph neural networks for recommendation systems has become an important research direction. However,…

Information Retrieval · Computer Science 2026-05-12 Zhifei Hu , Feng Xia

Value factorization is a popular and promising approach to scaling up multi-agent reinforcement learning in cooperative settings, which balances the learning scalability and the representational capacity of value functions. However, the…

Machine Learning · Computer Science 2021-11-02 Jianhao Wang , Zhizhou Ren , Beining Han , Jianing Ye , Chongjie Zhang