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In recent years, methods that combine contrastive learning with graph neural networks have emerged to address the challenges of recommendation systems, demonstrating powerful performance and playing a significant role in this domain.…

信息检索 · 计算机科学 2025-09-08 Hao Chen , Wenming Ma , Zihao Chu , Mingqi Li

Personalized recommendation is widely used in the web applications, and graph contrastive learning (GCL) has gradually become a dominant approach in recommender systems, primarily due to its ability to extract self-supervised signals from…

信息检索 · 计算机科学 2025-04-15 Yu Zhang , Yiwen Zhang , Yi Zhang , Lei Sang , Yun Yang

Heterogeneous graphs (HGs) are composed of multiple types of nodes and edges, making it more effective in capturing the complex relational structures inherent in the real world. However, in real-world scenarios, labeled data is often…

机器学习 · 计算机科学 2025-08-20 Ruobing Jiang , Yacong Li , Haobing Liu , Yanwei Yu

Attributed graph clustering holds significant importance in modern data analysis. However, due to the complexity of graph data and the heterogeneity of node attributes, leveraging graph information for clustering remains challenging. To…

机器学习 · 计算机科学 2025-08-01 Binxiong Li , Xu Xiang , Xue Li , Quanzhou Lou , Binyu Zhao , Yujie Liu , Huijie Tang , Benhan Yang

Graph Contrastive Learning (GCL) has emerged as a popular training approach for learning node embeddings from augmented graphs without labels. Despite the key principle that maximizing the similarity between positive node pairs while…

机器学习 · 计算机科学 2024-05-27 Yue Yu , Xiao Wang , Mengmei Zhang , Nian Liu , Chuan Shi

Self-supervised representation learning is an emerging research topic for its powerful capacity in learning with unlabeled data. As a mainstream self-supervised learning method, augmentation-based contrastive learning has achieved great…

计算机视觉与模式识别 · 计算机科学 2020-10-21 Yanlun Tu , Jianxing Feng , Yang Yang

Graph-based Semi-Supervised Learning (SSL) aims to transfer the labels of a handful of labeled data to the remaining massive unlabeled data via a graph. As one of the most popular graph-based SSL approaches, the recently proposed Graph…

机器学习 · 计算机科学 2020-09-22 Sheng Wan , Shirui Pan , Jian Yang , Chen Gong

Heterogeneous graphs can well describe the complex entity relationships in the real world. For example, online shopping networks contain multiple physical types of consumers and products, as well as multiple relationship types such as…

机器学习 · 计算机科学 2024-07-02 Jing Zhang , Xiaoqian Jiang , Yingjie Xie , Cangqi Zhou

Prevailing deep graph learning models often suffer from label sparsity issue. Although many graph few-shot learning (GFL) methods have been developed to avoid performance degradation in face of limited annotated data, they excessively rely…

机器学习 · 计算机科学 2022-10-04 Chunhui Zhang , Hongfu Liu , Jundong Li , Yanfang Ye , Chuxu Zhang

Graph contrastive learning (GCL) has become a central paradigm for self-supervised representation learning in computational intelligence, with applications spanning recommendation, anomaly detection, and personalization. A key limitation of…

机器学习 · 计算机科学 2026-05-06 Adnan Ali , Jinlong Li , Syed Muhammad Israr , Ali Kashif Bashir

This paper studies active learning (AL) on graphs, whose purpose is to discover the most informative nodes to maximize the performance of graph neural networks (GNNs). Previously, most graph AL methods focus on learning node representations…

机器学习 · 计算机科学 2021-04-19 Yanqiao Zhu , Weizhi Xu , Qiang Liu , Shu Wu

The recent emergence of contrastive learning approaches facilitates the application on graph representation learning (GRL), introducing graph contrastive learning (GCL) into the literature. These methods contrast semantically similar and…

机器学习 · 计算机科学 2022-06-03 Ganqu Cui , Yufeng Du , Cheng Yang , Jie Zhou , Liang Xu , Xing Zhou , Xingyi Cheng , Zhiyuan Liu

Contrastive learning (CL) has emerged as a promising technique for improving recommender systems, addressing the challenge of data sparsity by using self-supervised signals from raw data. Integration of CL with graph convolutional network…

信息检索 · 计算机科学 2024-08-23 Jeongwhan Choi , Hyowon Wi , Chaejeong Lee , Sung-Bae Cho , Dongha Lee , Noseong Park

In this paper, we study the problem of unsupervised graph representation learning by harnessing the control properties of dynamical networks defined on graphs. Our approach introduces a novel framework for contrastive learning, a widely…

机器学习 · 计算机科学 2024-04-19 Obaid Ullah Ahmad , Anwar Said , Mudassir Shabbir , Waseem Abbas , Xenofon Koutsoukos

Graph contrastive learning (GCL) aims to learn discriminative semantic invariance by contrasting different views of the same graph that share critical topological patterns. However, existing GCL approaches with structural augmentations…

机器学习 · 计算机科学 2025-12-03 Qirui Ji , Bin Qin , Yifan Jin , Yunze Zhao , Chuxiong Sun , Changwen Zheng , Jianwen Cao , Jiangmeng Li

Graph contrastive learning is usually performed by first conducting Graph Data Augmentation (GDA) and then employing a contrastive learning pipeline to train GNNs. As we know that GDA is an important issue for graph contrastive learning.…

机器学习 · 计算机科学 2024-01-09 Ziyan Zhang , Bo Jiang , Jin Tang , Bin Luo

Graph contrastive learning (GCL) has become a powerful tool for learning graph data, but its scalability remains a significant challenge. In this work, we propose a simple yet effective training framework called Structural Compression…

机器学习 · 计算机科学 2024-05-10 Shengzhong Zhang , Wenjie Yang , Xinyuan Cao , Hongwei Zhang , Zengfeng Huang

The combination of semi-supervised learning (SemiSL) and contrastive learning (CL) has been successful in medical image segmentation with limited annotations. However, these works often rely on pretext tasks that lack the specificity…

计算机视觉与模式识别 · 计算机科学 2024-10-15 Zehua Cheng , Di Yuan , Thomas Lukasiewicz

Recently, graph contrastive learning (GCL) has emerged as one of the optimal solutions for node-level and supervised tasks. However, for structure-related and unsupervised tasks such as graph clustering, current GCL algorithms face…

社会与信息网络 · 计算机科学 2025-09-25 Yuecheng Li , Lele Fu , Sheng Huang , Chuan Chen , Lei Yang , Zibin Zheng

Recently, some contrastive learning methods have been proposed to simultaneously learn representations and clustering assignments, achieving significant improvements. However, these methods do not take the category information and…

计算机视觉与模式识别 · 计算机科学 2021-04-06 Huasong Zhong , Jianlong Wu , Chong Chen , Jianqiang Huang , Minghua Deng , Liqiang Nie , Zhouchen Lin , Xian-Sheng Hua