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Graph contrastive learning (GCL) has emerged as a representative paradigm in graph self-supervised learning, where negative samples are commonly regarded as the key to preventing model collapse and producing distinguishable representations.…

Machine Learning · Computer Science 2023-12-06 Wangbin Sun , Jintang Li , Liang Chen , Bingzhe Wu , Yatao Bian , Zibin Zheng

Recent advancements in Graph Contrastive Learning (GCL) have demonstrated remarkable effectiveness in improving graph representations. However, relying on predefined augmentations (e.g., node dropping, edge perturbation, attribute masking)…

Machine Learning · Computer Science 2025-02-27 Khaled Mohammed Saifuddin , Shihao Ji , Esra Akbas

Graph Contrastive Learning (GCL) seeks to learn nodal or graph representations that contain maximal consistent information from graph-structured data. While node-level contrasting modes are dominating, some efforts commence to explore…

Machine Learning · Computer Science 2024-09-13 Zhenhao Zhao , Minhong Zhu , Chen Wang , Sijia Wang , Jiqiang Zhang , Li Chen , Weiran Cai

Graph Neural Networks (GNNs) are powerful tools for recommendation systems, but they often struggle under data sparsity and noise. To address these issues, we implemented LightGCL, a graph contrastive learning model that uses Singular Value…

Information Retrieval · Computer Science 2025-06-03 Aravinda Jatavallabha , Prabhanjan Bharadwaj , Ashish Chander

Graph clustering is a crucial task in network analysis with widespread applications, focusing on partitioning nodes into distinct groups with stronger intra-group connections than inter-group ones. Recently, contrastive learning has…

Machine Learning · Computer Science 2024-08-20 Xunlian Wu , Jingqi Hu , Anqi Zhang , Yining Quan , Qiguang Miao , Peng Gang Sun

Graph contrastive learning (GCL) has recently emerged as a new concept which allows for capitalizing on the strengths of graph neural networks (GNNs) to learn rich representations in a wide variety of applications which involve abundant…

Machine Learning · Computer Science 2024-06-26 Yuzhou Chen , Jose Frias , Yulia R. Gel

Graph Contrastive Learning (GCL) excels at managing noise and fluctuations in input data, making it popular in various fields (e.g., social networks, and knowledge graphs). Our study finds that the difference in high-frequency information…

Machine Learning · Computer Science 2024-10-15 Yuntao Shou , Xiangyong Cao , Deyu Meng

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,…

Machine Learning · Computer Science 2024-03-08 Yanhu Mo , Xiao Wang , Shaohua Fan , Chuan Shi

Contrastive learning (CL), which can extract the information shared between different contrastive views, has become a popular paradigm for vision representation learning. Inspired by the success in computer vision, recent work introduces CL…

Machine Learning · Computer Science 2022-12-15 Xumeng Gong , Cheng Yang , Chuan Shi

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…

Social and Information Networks · Computer Science 2022-02-15 Bolian Li , Baoyu Jing , Hanghang Tong

Graph contrastive learning (GCL) is a popular method for leaning graph representations by maximizing the consistency of features across augmented views. Traditional GCL methods utilize single-perspective i.e. data or model-perspective)…

Machine Learning · Computer Science 2024-06-04 Zelin Yao , Chuang Liu , Xueqi Ma , Mukun Chen , Jia Wu , Xiantao Cai , Bo Du , Wenbin Hu

Graph contrastive learning (GCL) has emerged as a state-of-the-art strategy for learning representations of diverse graphs including social and biomedical networks. GCL widely uses stochastic graph topology augmentation, such as uniform…

Machine Learning · Computer Science 2024-02-22 Yucheng Wu , Leye Wang , Xiao Han , Han-Jia Ye

Graph Neural Networks (GNNs) have recently gained widespread attention as a successful tool for analyzing graph-structured data. However, imperfect graph structure with noisy links lacks enough robustness and may damage graph…

Machine Learning · Computer Science 2025-03-25 Xianlin Zeng , Yufeng Wang , Yuqi Sun , Guodong Guo , Wenrui Ding , Baochang Zhang

Traditional Graph Neural Network (GNN), as a graph representation learning method, is constrained by label information. However, Graph Contrastive Learning (GCL) methods, which tackle the label problem effectively, mainly focus on the…

Machine Learning · Computer Science 2023-08-08 Kai Yang , Yuan Liu , Zijuan Zhao , Peijin Ding , Wenqian Zhao

Graph contrastive learning (GCL) aims to align the positive features while differentiating the negative features in the latent space by minimizing a pair-wise contrastive loss. As the embodiment of an outstanding discriminative unsupervised…

Machine Learning · Computer Science 2023-12-27 Jiangmeng Li , Yifan Jin , Hang Gao , Wenwen Qiang , Changwen Zheng , Fuchun Sun

Graph Neural Networks (GNNs) are sensitive to structural noise from adversarial attacks or imperfections. Existing graph contrastive learning (GCL) methods typically rely on either random perturbations (e.g., edge dropping) for diversity or…

Machine Learning · Computer Science 2026-02-04 Hao Deng , Zhang Guo , Shuiping Gou , Bo Liu

Graph Contrastive Learning (GCL) has emerged as a promising approach in the realm of graph self-supervised learning. Prevailing GCL methods mainly derive from the principles of contrastive learning in the field of computer vision: modeling…

Machine Learning · Computer Science 2023-08-03 Zhiyuan Ning , Pengfei Wang , Pengyang Wang , Ziyue Qiao , Wei Fan , Denghui Zhang , Yi Du , Yuanchun Zhou

Graph-based collaborative filtering has been established as a prominent approach in recommendation systems, leveraging the inherent graph topology of user-item interactions to model high-order connectivity patterns and enhance…

Information Retrieval · Computer Science 2025-03-21 Fan Huang , Wei Wang

Contrastive Learning (CL) has recently emerged as a powerful technique in recommendation systems, particularly for its capability to harness self-supervised signals from perturbed views to mitigate the persistent challenge of data sparsity.…

Information Retrieval · Computer Science 2025-04-08 Zheyu Chen , Jinfeng Xu , Yutong Wei , Ziyue Peng

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…

Machine Learning · Computer Science 2025-08-01 Binxiong Li , Xu Xiang , Xue Li , Quanzhou Lou , Binyu Zhao , Yujie Liu , Huijie Tang , Benhan Yang