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相关论文: Calibrating and Improving Graph Contrastive Learni…

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Personalized recommendation is widely used in the web applications, and graph contrastive learning (GCL) has gradually become a dominant approach in recommender systems, primarily due to its ability to extract self-supervised signals from…

信息检索 · 计算机科学 2025-04-15 Yu Zhang , Yiwen Zhang , Yi Zhang , Lei Sang , Yun Yang

The graph contrastive learning (GCL) framework has gained remarkable achievements in graph representation learning. However, similar to graph neural networks (GNNs), GCL models are susceptible to graph structural attacks. As an unsupervised…

机器学习 · 计算机科学 2025-08-25 Yulin Zhu , Xing Ai , Yevgeniy Vorobeychik , Kai Zhou

Meta-learning algorithms adapt quickly to new tasks that are drawn from the same task distribution as the training tasks. The mechanism leading to fast adaptation is the conditioning of a downstream predictive model on the inferred…

Self-supervised learning of graph neural networks (GNN) is in great need because of the widespread label scarcity issue in real-world graph/network data. Graph contrastive learning (GCL), by training GNNs to maximize the correspondence…

机器学习 · 计算机科学 2021-11-04 Susheel Suresh , Pan Li , Cong Hao , Jennifer Neville

Graph Contrastive Learning (GCL) has emerged as a popular training approach for learning node embeddings from augmented graphs without labels. Despite the key principle that maximizing the similarity between positive node pairs while…

机器学习 · 计算机科学 2024-05-27 Yue Yu , Xiao Wang , Mengmei Zhang , Nian Liu , Chuan Shi

Graphs can model real-world, complex systems by representing entities and their interactions in terms of nodes and edges. To better exploit the graph structure, graph neural networks have been developed, which learn entity and edge…

机器学习 · 计算机科学 2022-06-06 Tong Liu , Yushan Liu , Marcel Hildebrandt , Mitchell Joblin , Hang Li , Volker Tresp

In recent years, graph neural networks (GNNs) have emerged as a successful tool in a variety of graph-related applications. However, the performance of GNNs can be deteriorated when noisy connections occur in the original graph structures;…

机器学习 · 计算机科学 2022-01-19 Yixin Liu , Yu Zheng , Daokun Zhang , Hongxu Chen , Hao Peng , Shirui Pan

Deep neural networks have been shown to be highly miscalibrated. often they tend to be overconfident in their predictions. It poses a significant challenge for safety-critical systems to utilise deep neural networks (DNNs), reliably. Many…

机器学习 · 计算机科学 2022-05-05 Aditya Singh , Alessandro Bay , Biswa Sengupta , Andrea Mirabile

Self-supervised graph representation learning has recently shown considerable promise in a range of fields, including bioinformatics and social networks. A large number of graph contrastive learning approaches have shown promising…

机器学习 · 计算机科学 2024-01-30 Wei Ju , Yiyang Gu , Zhengyang Mao , Ziyue Qiao , Yifang Qin , Xiao Luo , Hui Xiong , Ming Zhang

Graph contrastive learning (GCL) aims to contrast positive-negative counterparts to learn the node embeddings, whereas graph data augmentation methods are employed to generate these positive-negative samples. The variation, quantity, and…

机器学习 · 计算机科学 2025-03-05 Adnan Ali , Jinlong Li , Huanhuan Chen , Ali Kashif Bashir

Graph Neural Networks achieve remarkable results on problems with structured data but come as black-box predictors. Transferring existing explanation techniques, such as occlusion, fails as even removing a single node or edge can lead to…

机器学习 · 计算机科学 2020-10-27 Lukas Faber , Amin K. Moghaddam , Roger Wattenhofer

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…

机器学习 · 计算机科学 2024-08-20 Xunlian Wu , Jingqi Hu , Anqi Zhang , Yining Quan , Qiguang Miao , Peng Gang Sun

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…

机器学习 · 计算机科学 2022-12-15 Xumeng Gong , Cheng Yang , Chuan Shi

Recommender systems (RecSys) play a vital role in online platforms, offering users personalized suggestions amidst vast information. Graph contrastive learning aims to learn from high-order collaborative filtering signals with unsupervised…

信息检索 · 计算机科学 2024-04-29 Weizhi Zhang , Liangwei Yang , Zihe Song , Henry Peng Zou , Ke Xu , Yuanjie Zhu , Philip S. Yu

Electrocardiograms (ECGs) are essential for diagnosing cardiovascular diseases. However, existing ECG-Report contrastive learning methods focus on whole-ECG and report alignment, missing the link between local ECG features and individual…

信号处理 · 电气工程与系统科学 2025-09-30 Haitao Li , Che Liu , Zhengyao Ding , Ziyi Liu , Wenqi Shao , Zhengxing Huang

Graph-based anomaly detection has been widely used for detecting malicious activities in real-world applications. Existing attempts to address this problem have thus far focused on structural feature engineering or learning in the binary…

机器学习 · 计算机科学 2022-08-31 Bo Chen , Jing Zhang , Xiaokang Zhang , Yuxiao Dong , Jian Song , Peng Zhang , Kaibo Xu , Evgeny Kharlamov , Jie Tang

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…

密码学与安全 · 计算机科学 2023-10-06 Minhua Lin , Teng Xiao , Enyan Dai , Xiang Zhang , Suhang Wang

Heterogeneous graph neural network (HGNN) is a very popular technique for the modeling and analysis of heterogeneous graphs. Most existing HGNN-based approaches are supervised or semi-supervised learning methods requiring graphs to be…

机器学习 · 计算机科学 2023-11-17 Cuiying Huo , Dongxiao He , Yawen Li , Di Jin , Jianwu Dang , Weixiong Zhang , Witold Pedrycz , Lingfei Wu

In neutrino physics, analyses often depend on large simulated datasets, making it essential for models to generalise effectively to real-world detector data. Contrastive learning, a well-established technique in deep learning, offers a…

高能物理 - 实验 · 物理学 2025-05-23 Alex Wilkinson , Radi Radev , Saul Alonso-Monsalve

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