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Among different existing graph self-supervised learning strategies, graph contrastive learning (GCL) has been one of the most prevalent approaches to this problem. Despite the remarkable performance those GCL methods have achieved, existing…

机器学习 · 计算机科学 2022-10-27 Qianlong Wen , Zhongyu Ouyang , Chunhui Zhang , Yiyue Qian , Yanfang Ye , Chuxu Zhang

Recently, Graph Neural Networks (GNNs) achieve remarkable success in Recommendation. To reduce the influence of data sparsity, Graph Contrastive Learning (GCL) is adopted in GNN-based CF methods for enhancing performance. Most GCL methods…

信息检索 · 计算机科学 2023-02-07 Junjie Huang , Qi Cao , Ruobing Xie , Shaoliang Zhang , Feng Xia , Huawei Shen , Xueqi Cheng

Graph contrastive learning (GCL) has recently emerged as a promising approach for graph representation learning. Some existing methods adopt the 1-vs-K scheme to construct one positive and K negative samples for each graph, but it is…

机器学习 · 计算机科学 2023-09-06 Minjie Chen , Yao Cheng , Ye Wang , Xiang Li , Ming Gao

Graph Contrastive Learning (GCL) has recently made progress as an unsupervised graph representation learning paradigm. GCL approaches can be categorized into augmentation-based and augmentation-free methods. The former relies on complex…

机器学习 · 计算机科学 2025-04-25 Yanan Zhao , Feng Ji , Kai Zhao , Xuhao Li , Qiyu Kang , Wenfei Liang , Yahya Alkhatib , Xingchao Jian , Wee Peng Tay

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

In recent years, deep learning on graphs has achieved remarkable success in various domains. However, the reliance on annotated graph data remains a significant bottleneck due to its prohibitive cost and time-intensive nature. To address…

Graph Contrastive Learning (GCL) leverages data augmentation techniques to produce contrasting views, enhancing the accuracy of recommendation systems through learning the consistency between contrastive views. However, existing…

机器学习 · 计算机科学 2024-08-07 Chu Zhao , Enneng Yang , Yuliang Liang , Jianzhe Zhao , Guibing Guo , Xingwei Wang

Graph contrastive learning (GCL), learning the node representation by contrasting two augmented graphs in a self-supervised way, has attracted considerable attention. GCL is usually believed to learn the invariant representation. However,…

机器学习 · 计算机科学 2024-03-08 Yanhu Mo , Xiao Wang , Shaohua Fan , Chuan Shi

Graph neural network(GNN) has been a powerful approach in collaborative filtering(CF) due to its ability to model high-order user-item relationships. Recently, to alleviate the data sparsity and enhance representation learning, many efforts…

信息检索 · 计算机科学 2024-12-10 Bowen Zheng , Junjie Zhang , Hongyu Lu , Yu Chen , Ming Chen , Wayne Xin Zhao , Ji-Rong Wen

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), which fuses graph neural networks with contrastive learning, has evolved as a pivotal tool in user-item recommendations. While promising, existing GCL methods often lack explicit modeling of hierarchical…

信息检索 · 计算机科学 2025-05-27 Jiawei Xue , Zhen Yang , Haitao Lin , Ziji Zhang , Luzhu Wang , Yikun Gu , Yao Xu , Xin Li

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

Graph contrastive learning (GCL) has demonstrated great promise for learning generalizable graph representations from unlabeled data. However, conventional GCL approaches face two critical limitations: (1) the restricted expressive capacity…

机器学习 · 计算机科学 2025-08-11 Zihu Wang , Boxun Xu , Hejia Geng , Peng Li

Bundle recommendation aims to provide a bundle of items to satisfy the user preference on e-commerce platform. Existing successful solutions are based on the contrastive graph learning paradigm where graph neural networks (GNNs) are…

信息检索 · 计算机科学 2023-07-26 Zhao-Yang Liu , Liucheng Sun , Chenwei Weng , Qijin Chen , Chengfu Huo

Contrastive learning (CL) is a popular technique for self-supervised learning (SSL) of visual representations. It uses pairs of augmentations of unlabeled training examples to define a classification task for pretext learning of a deep…

计算机视觉与模式识别 · 计算机科学 2020-10-26 Chih-Hui Ho , Nuno Vasconcelos

Graph Contrastive Learning (GCL) has shown strong promise for unsupervised graph representation learning, yet its effectiveness on heterophilic graphs, where connected nodes often belong to different classes, remains limited. Most existing…

机器学习 · 计算机科学 2026-05-12 Yanan Zhao , Feng Ji , Jingyang Dai , Jiaze Ma , Wee Peng Tay

Despite recent success of self-supervised based contrastive learning model for 3D point clouds representation, the adversarial robustness of such pre-trained models raised concerns. Adversarial contrastive learning (ACL) is considered an…

计算机视觉与模式识别 · 计算机科学 2022-09-16 Junxuan Huang , Yatong An , Lu cheng , Bai Chen , Junsong Yuan , Chunming Qiao

Graph representation learning is crucial for many real-world applications (e.g. social relation analysis). A fundamental problem for graph representation learning is how to effectively learn representations without human labeling, which is…

社会与信息网络 · 计算机科学 2022-02-15 Bolian Li , Baoyu Jing , Hanghang Tong

Graph contrastive learning (GCL) has been widely used as an effective self-supervised learning method for graph representation learning. However, how to apply adequate and stable graph augmentation to generating proper views for contrastive…

机器学习 · 计算机科学 2025-01-09 Yanchen Xu , Siqi Huang , Hongyuan Zhang , Xuelong Li

Graph contrastive learning (GCL) often suffers from false negatives, which degrades the performance on downstream tasks. The existing methods addressing the false negative issue usually rely on human prior knowledge, still leading GCL to…

机器学习 · 计算机科学 2025-05-16 Yiyang Zhao , Chengpei Wu , Lilin Zhang , Ning Yang