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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…

机器学习 · 计算机科学 2023-09-20 Hao Liu , Jiarui Feng , Lecheng Kong , Dacheng Tao , Yixin Chen , Muhan Zhang

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

In this work, we aim to consider the application of contrastive learning in the scenario of the recommendation system adequately, making it more suitable for recommendation task. We propose a learning paradigm called supervised contrastive…

信息检索 · 计算机科学 2022-04-20 Chun 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

Recently, heterogeneous Graph Neural Networks (GNNs) have become a de facto model for analyzing HGs, while most of them rely on a relative large number of labeled data. In this work, we investigate Contrastive Learning (CL), a key component…

机器学习 · 计算机科学 2021-09-01 Yanqiao Zhu , Yichen Xu , Hejie Cui , Carl Yang , Qiang Liu , Shu Wu

Recently, graph collaborative filtering methods have been proposed as an effective recommendation approach, which can capture users' preference over items by modeling the user-item interaction graphs. In order to reduce the influence of…

信息检索 · 计算机科学 2022-02-16 Zihan Lin , Changxin Tian , Yupeng Hou , Wayne Xin Zhao

Graph augmentations are essential for graph contrastive learning. Most existing works use pre-defined random augmentations, which are usually unable to adapt to different input graphs and fail to consider the impact of different nodes and…

机器学习 · 计算机科学 2023-03-28 Yifu Chen , Qianqian Ren , Liu Yong

Graph autoencoders (GAEs) and graph contrastive learning (GCL) are two major paradigms for self-supervised representation learning on graphs, yet they are often studied in isolation and treated as fundamentally different approaches. In this…

机器学习 · 计算机科学 2026-05-28 Jintang Li , Ruofan Wu , Yuchang Zhu , Huizhe Zhang , Zulun Zhu , Liang Chen

For graph self-supervised learning (GSSL), masked autoencoder (MAE) follows the generative paradigm and learns to reconstruct masked graph edges or node features. Contrastive Learning (CL) maximizes the similarity between augmented views of…

机器学习 · 计算机科学 2023-10-25 Yuxiang Wang , Xiao Yan , Chuang Hu , Fangcheng Fu , Wentao Zhang , Hao Wang , Shuo Shang , Jiawei Jiang

Existing graph contrastive learning (GCL) techniques typically require two forward passes for a single instance to construct the contrastive loss, which is effective for capturing the low-frequency signals of node features. Such a dual-pass…

机器学习 · 计算机科学 2023-11-21 Haonan Wang , Jieyu Zhang , Qi Zhu , Wei Huang , Kenji Kawaguchi , Xiaokui Xiao

Graph Contrastive Learning (GCL) is an effective way to learn generalized graph representations in a self-supervised manner, and has grown rapidly in recent years. However, the underlying community semantics has not been well explored by…

社会与信息网络 · 计算机科学 2023-05-09 Han Chen , Ziwen Zhao , Yuhua Li , Yixiong Zou , Ruixuan Li , Rui Zhang

Self-supervised learning (SSL) on graphs generates node and graph representations (i.e., embeddings) that can be used for downstream tasks such as node classification, node clustering, and link prediction. Graph SSL is particularly useful…

机器学习 · 计算机科学 2025-09-26 Jiali Chen , Avijit Mukherjee

Inspired by the successful application of contrastive learning on graphs, researchers attempt to impose graph contrastive learning approaches on heterogeneous information networks. Orthogonal to homogeneous graphs, the types of nodes and…

机器学习 · 计算机科学 2023-09-06 Yuanyuan Guo , Yu Xia , Rui Wang , Rongcheng Duan , Lu Li , Jiangmeng Li

Dynamic graph modeling has recently attracted much attention due to its extensive applications in many real-world scenarios, such as recommendation systems, financial transactions, and social networks. Although many works have been proposed…

机器学习 · 计算机科学 2021-05-18 Lu Wang , Xiaofu Chang , Shuang Li , Yunfei Chu , Hui Li , Wei Zhang , Xiaofeng He , Le Song , Jingren Zhou , Hongxia Yang

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

Graph Neural Networks (GNNs) have achieved promising performance in semi-supervised node classification in recent years. However, the problem of insufficient supervision, together with representation collapse, largely limits the performance…

机器学习 · 计算机科学 2025-03-07 Xihong Yang , Yiqi Wang , Yue Liu , Yi Wen , Lingyuan Meng , Sihang Zhou , Xinwang Liu , En Zhu

In the domain of recommendation and collaborative filtering, Graph Contrastive Learning (GCL) has become an influential approach. Nevertheless, the reasons for the effectiveness of contrastive learning are still not well understood. In this…

信息检索 · 计算机科学 2024-10-01 Chengkai Liu , Jianling Wang , James Caverlee

Heterogeneous Graphs (HGs) effectively model complex relationships in the real world through multi-type nodes and edges. In recent years, inspired by self-supervised learning (SSL), contrastive learning (CL)-based Heterogeneous Graphs…

机器学习 · 计算机科学 2025-05-06 Yu Wang , Lei Sang , Yi Zhang , Yiwen Zhang , Xindong Wu

The effectiveness of contrastive learning methods has been widely recognized in the field of graph learning, especially in contexts where graph data often lack labels or are difficult to label. However, the application of these methods to…

机器学习 · 计算机科学 2026-01-16 Qiang Yu , Xinran Cheng , Shiqiang Xu , Chuanyi Liu

Deep learning in computational biochemistry has traditionally focused on molecular graphs neural representations; however, recent advances in language models highlight how much scientific knowledge is encoded in text. To bridge these two…

机器学习 · 计算机科学 2023-07-26 Romain Lacombe , Andrew Gaut , Jeff He , David Lüdeke , Kateryna Pistunova