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Label scarcity in a graph is frequently encountered in real-world applications due to the high cost of data labeling. To this end, semi-supervised domain adaptation (SSDA) on graphs aims to leverage the knowledge of a labeled source graph…

机器学习 · 计算机科学 2024-04-05 Jiaren Xiao , Quanyu Dai , Xiao Shen , Xiaochen Xie , Jing Dai , James Lam , Ka-Wai Kwok

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…

机器学习 · 计算机科学 2023-12-27 Jiangmeng Li , Yifan Jin , Hang Gao , Wenwen Qiang , Changwen Zheng , Fuchun Sun

Graph contrastive learning (GCL) has emerged as a promising approach to enhance graph neural networks' (GNNs) ability to learn rich representations from unlabeled graph-structured data. However, current GCL models face challenges with…

机器学习 · 计算机科学 2025-03-11 Yujia Wu , Junyi Mo , Elynn Chen , Yuzhou Chen

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…

机器学习 · 计算机科学 2021-10-27 Yanqiao Zhu , Yichen Xu , Qiang Liu , Shu Wu

Contrastive learning methods based on InfoNCE loss are popular in node representation learning tasks on graph-structured data. However, its reliance on data augmentation and its quadratic computational complexity might lead to inconsistency…

机器学习 · 计算机科学 2022-12-12 Hengrui Zhang , Qitian Wu , Yu Wang , Shaofeng Zhang , Junchi Yan , Philip S. Yu

Despite its success in self-supervised learning, contrastive learning is less studied in the supervised setting. In this work, we first use a set of pilot experiments to show that in the supervised setting, the cross-entropy loss objective…

计算与语言 · 计算机科学 2026-02-13 Liz Li , Wei Zhu

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…

机器学习 · 计算机科学 2023-08-03 Zhiyuan Ning , Pengfei Wang , Pengyang Wang , Ziyue Qiao , Wei Fan , Denghui Zhang , Yi Du , Yuanchun Zhou

Graph classification has gained significant attention due to its applications in chemistry, social networks, and bioinformatics. While Graph Neural Networks (GNNs) effectively capture local structural patterns, they often overlook global…

机器学习 · 计算机科学 2025-12-03 Ahmet Sami Korkmaz , Selim Coskunuzer , Md Joshem Uddin

In business analysis, providing effective recommendations is essential for enhancing company profits. The utilization of graph-based structures, such as bipartite graphs, has gained popularity for their ability to analyze complex data…

信息检索 · 计算机科学 2025-01-14 Jiayang Wu , Wensheng Gan , Huashen Lu , Philip S. Yu

Heterogeneous graph neural networks (HGNNs) have demonstrated their superiority in exploiting auxiliary information for recommendation tasks. However, graphs constructed using meta-paths in HGNNs are usually too dense and contain a large…

信息检索 · 计算机科学 2025-06-02 Lei Sang , Yu Wang , Yiwen Zhang

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

Graph neural networks (GNNs) have recently emerged as an effective approach to model neighborhood signals in collaborative filtering. Towards this research line, graph contrastive learning (GCL) demonstrates robust capabilities to address…

信息检索 · 计算机科学 2024-07-22 Xinzhou Jin , Jintang Li , Liang Chen , Chenyun Yu , Yuanzhen Xie , Tao Xie , Chengxiang Zhuo , Zang Li , Zibin Zheng

Graph contrastive learning (GCL) aligns node representations by classifying node pairs into positives and negatives using a selection process that typically relies on establishing correspondences within two augmented graphs. The…

机器学习 · 计算机科学 2024-11-27 Maysam Behmanesh , Maks Ovsjanikov

Graph Self-Supervised Learning (GSSL) has emerged as a powerful paradigm for generating high-quality representations for graph-structured data. While multi-scale graph contrastive learning has received increasing attention, many existing…

机器学习 · 计算机科学 2026-05-14 Mohamed Mahmoud Amar , Nairouz Mrabah , Mohamed Bouguessa , Abdoulaye Baniré Diallo

Semi-supervised learning has substantially advanced medical image segmentation since it alleviates the heavy burden of acquiring the costly expert-examined annotations. Especially, the consistency-based approaches have attracted more…

图像与视频处理 · 电气工程与系统科学 2022-03-16 Zhe Xu , Yixin Wang , Donghuan Lu , Lequan Yu , Jiangpeng Yan , Jie Luo , Kai Ma , Yefeng Zheng , Raymond Kai-yu Tong

Self-Supervised Learning (SSL) is a paradigm that leverages unlabeled data for model training. Empirical studies show that SSL can achieve promising performance in distribution shift scenarios, where the downstream and training…

机器学习 · 计算机科学 2023-12-13 Xuyang Zhao , Tianqi Du , Yisen Wang , Jun Yao , Weiran Huang

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

Analog and mixed-signal (AMS) integrated circuits (ICs) lie at the core of modern computing and communications systems. However, despite the continued rise in design complexity, advances in AMS automation remain limited. This reflects the…

机器学习 · 计算机科学 2026-02-16 Felicia B. Guo , Ken T. Ho , Andrei Vladimirescu , Borivoje Nikolic

Graph neural networks (GNNs) often struggle to learn discriminative node representations for heterophilic graphs, where connected nodes tend to have dissimilar labels and feature similarity provides weak structural cues. We propose…

机器学习 · 计算机科学 2025-12-30 Ayushman Raghuvanshi , Gonzalo Mateos , Sundeep Prabhakar Chepuri

Graph Contrastive Learning (GCL) has recently drawn much research interest for learning generalizable node representations in a self-supervised manner. In general, the contrastive learning process in GCL is performed on top of the…

机器学习 · 计算机科学 2022-12-06 Kaize Ding , Yancheng Wang , Yingzhen Yang , Huan Liu