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Graph Neural Networks (GNNs) have shown remarkable capabilities in learning from graph-structured data with various applications such as social analysis and bioinformatics. However, the presence of label noise in real scenarios poses a…

Machine Learning · Computer Science 2026-01-27 Wei Ju , Wei Zhang , Siyu Yi , Zhengyang Mao , Yifan Wang , Jingyang Yuan , Zhiping Xiao , Ziyue Qiao , Ming Zhang

Noise and inconsistency commonly exist in real-world information networks, due to inherent error-prone nature of human or user privacy concerns. To date, tremendous efforts have been made to advance feature learning from networks, including…

Machine Learning · Computer Science 2019-12-30 Min Shi , Yufei Tang , Xingquan Zhu , Jianxun Liu

Graph contrastive learning (GCL) has attracted a surge of attention due to its superior performance for learning node/graph representations without labels. However, in practice, the underlying class distribution of unlabeled nodes for the…

Machine Learning · Computer Science 2023-05-04 Liang Zeng , Lanqing Li , Ziqi Gao , Peilin Zhao , Jian Li

Graph Neural Networks (GNNs) have gained considerable prominence in semi-supervised learning tasks in processing graph-structured data, primarily owing to their message-passing mechanism, which largely relies on the availability of clean…

Machine Learning · Computer Science 2024-11-07 Shuangjie Li , Baoming Zhang , Jianqing Song , Gaoli Ruan , Chongjun Wang , Junyuan Xie

Graph Contrastive Learning (GCL) aims to self-supervised learn low-dimensional graph representations, primarily through instance discrimination, which involves manually mining positive and negative pairs from graphs, increasing the…

Machine Learning · Computer Science 2025-03-26 Yongqi Huang , Jitao Zhao , Dongxiao He , Di Jin , Yuxiao Huang , Zhen Wang

Graph Neural Network (GNN) is an emerging technique for graph-based learning tasks such as node classification. In this work, we reveal the vulnerability of GNN to the imbalance of node labels. Traditional solutions for imbalanced…

Machine Learning · Computer Science 2022-02-08 Xiaohe Li , Lijie Wen , Yawen Deng , Fuli Feng , Xuming Hu , Lei Wang , Zide Fan

Node representation learning on attributed graphs -- whose nodes are associated with rich attributes (e.g., texts and protein sequences) -- plays a crucial role in many important downstream tasks. To encode the attributes and graph…

Machine Learning · Computer Science 2025-06-04 Zhihao Shi , Jie Wang , Fanghua Lu , Hanzhu Chen , Defu Lian , Zheng Wang , Jieping Ye , Feng Wu

Recently, graph convolutional network (GCN) has been widely used for semi-supervised classification and deep feature representation on graph-structured data. However, existing GCN generally fails to consider the local invariance constraint…

Computer Vision and Pattern Recognition · Computer Science 2018-09-27 Bo Jiang , Doudou Lin

Contrastive learning is a significant paradigm in graph self-supervised learning. However, it requires negative samples to prevent model collapse and learn discriminative representations. These negative samples inevitably lead to heavy…

Machine Learning · Computer Science 2024-08-12 Yunhui Liu , Huaisong Zhang , Tieke He , Tao Zheng , Jianhua Zhao

Graph Convolutional Representation (GCR) has achieved impressive performance for graph data representation. However, existing GCR is generally defined on the input fixed graph which may restrict the representation capacity and also be…

Computer Vision and Pattern Recognition · Computer Science 2021-10-14 Bo Jiang , Ziyan Zhang , Bin Luo

Graph contrastive learning (GCL) has garnered significant attention recently since it learns complex structural information from graphs through self-supervised learning manner. However, prevalent GCL models may suffer from performance…

Machine Learning · Computer Science 2025-04-28 Xiaofan Wei , Binyan Zhang

Node classification using Graph Neural Networks (GNNs) has been widely applied in various practical scenarios, such as predicting user interests and detecting communities in social networks. However, recent studies have shown that…

Machine Learning · Computer Science 2024-08-14 Shuqi He , Jun Zhuang , Ding Wang , Jun Song

Graph Contrastive Learning (GCL) has emerged as a popular unsupervised graph representation learning method. However, it has been shown that GCL is vulnerable to adversarial attacks on both the graph structure and node attributes. Although…

Cryptography and Security · Computer Science 2023-10-06 Minhua Lin , Teng Xiao , Enyan Dai , Xiang Zhang , Suhang Wang

Graph Neural Networks (GNNs) have become popular in Graph Representation Learning (GRL). One fundamental application is few-shot node classification. Most existing methods follow the meta learning paradigm, showing the ability of fast…

Machine Learning · Computer Science 2023-09-20 Hao Liu , Jiarui Feng , Lecheng Kong , Dacheng Tao , Yixin Chen , Muhan Zhang

Graph neural networks (GNNs) have achieved state-of-the-art performance for node classification on graphs. The vast majority of existing works assume that genuine node labels are always provided for training. However, there has been very…

Machine Learning · Computer Science 2021-03-08 Yayong Li , Jie yin , Ling Chen

Graph neural networks (GNNs) achieve remarkable success in graph-based semi-supervised node classification, leveraging the information from neighboring nodes to improve the representation learning of target node. The success of GNNs at node…

Machine Learning · Computer Science 2020-07-28 Bingbing Xu , Junjie Huang , Liang Hou , Huawei Shen , Jinhua Gao , Xueqi Cheng

Graph Contrastive Learning (GCL) has proven highly effective in promoting the performance of Semi-Supervised Node Classification (SSNC). However, existing GCL methods are generally transferred from other fields like CV or NLP, whose…

Machine Learning · Computer Science 2022-04-28 Deli Chen , Yankai Lin , Lei Li , Xuancheng Ren , Peng Li , Jie Zhou , Xu Sun

Graph contrastive learning (GCL) has become a hot topic in the field of graph representation learning. In contrast to traditional supervised learning relying on a large number of labels, GCL exploits augmentation strategies to generate…

Machine Learning · Computer Science 2025-03-28 Jianqing Liang , Xinkai Wei , Min Chen , Zhiqiang Wang , Jiye Liang

Graph representation learning (GRL) makes considerable progress recently, which encodes graphs with topological structures into low-dimensional embeddings. Meanwhile, the time-consuming and costly process of annotating graph labels manually…

Machine Learning · Computer Science 2024-02-28 Haojun Jiang , Jiawei Sun , Jie Li , Chentao Wu

Graph Contrastive Learning (GCL) establishes a new paradigm for learning graph representations without human annotations. Although remarkable progress has been witnessed recently, the success behind GCL is still left somewhat mysterious. In…

Machine Learning · Computer Science 2021-10-27 Yanqiao Zhu , Yichen Xu , Qiang Liu , Shu Wu
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