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Contrastive learning has gained significant attention as a method for self-supervised learning. The contrastive loss function ensures that embeddings of positive sample pairs (e.g., different samples from the same class or different views…

Graph matching has important applications in pattern recognition and beyond. Current approaches predominantly adopt supervised learning, demanding extensive labeled data which can be limited or costly. Meanwhile, self-supervised learning…

Machine Learning · Computer Science 2024-06-26 Jianyuan Bo , Yuan Fang

Deep learning models are modern tools for spatio-temporal graph (STG) forecasting. Though successful, we argue that data scarcity is a key factor limiting their recent improvements. Meanwhile, contrastive learning has been an effective…

Machine Learning · Computer Science 2022-11-04 Xu Liu , Yuxuan Liang , Chao Huang , Yu Zheng , Bryan Hooi , Roger Zimmermann

Graph representation learning has long been an important yet challenging task for various real-world applications. However, their downstream tasks are mainly performed in the settings of supervised or semi-supervised learning. Inspired by…

Machine Learning · Computer Science 2021-04-14 Shiyi Chen , Ziao Wang , Xinni Zhang , Xiaofeng Zhang , Dan Peng

Heterogeneous graph contrastive learning has received wide attention recently. Some existing methods use meta-paths, which are sequences of object types that capture semantic relationships between objects, to construct contrastive views.…

Machine Learning · Computer Science 2024-04-08 Jianxiang Yu , Qingqing Ge , Xiang Li , Aoying Zhou

As a representative self-supervised method, contrastive learning has achieved great successes in unsupervised training of representations. It trains an encoder by distinguishing positive samples from negative ones given query anchors. These…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Xiao Wang , Yuhang Huang , Dan Zeng , Guo-Jun Qi

Contrastive learning is a major studied topic in metric learning. However, sampling effective contrastive pairs remains a challenge due to factors such as limited batch size, imbalanced data distribution, and the risk of overfitting. In…

Computer Vision and Pattern Recognition · Computer Science 2023-08-02 Bolun Cai , Pengfei Xiong , Shangxuan Tian

This study introduces the Multi-Scale Weight-Based Pairwise Coarsening and Contrastive Learning (MPCCL) model, a novel approach for attributed graph clustering that effectively bridges critical gaps in existing methods, including long-range…

Machine Learning · Computer Science 2025-07-29 Binxiong Li , Yuefei Wang , Binyu Zhao , Heyang Gao , Benhan Yang , Quanzhou Luo , Xue Li , Xu Xiang , Yujie Liu , Huijie Tang

Contrastive learning applied to self-supervised representation learning has seen a resurgence in recent years, leading to state of the art performance in the unsupervised training of deep image models. Modern batch contrastive approaches…

Machine Learning · Computer Science 2021-03-12 Prannay Khosla , Piotr Teterwak , Chen Wang , Aaron Sarna , Yonglong Tian , Phillip Isola , Aaron Maschinot , Ce Liu , Dilip Krishnan

Graph representation learning nowadays becomes fundamental in analyzing graph-structured data. Inspired by recent success of contrastive methods, in this paper, we propose a novel framework for unsupervised graph representation learning by…

Machine Learning · Computer Science 2020-07-14 Yanqiao Zhu , Yichen Xu , Feng Yu , Qiang Liu , Shu Wu , Liang Wang

Graph contrastive learning (GCL) alleviates the heavy reliance on label information for graph representation learning (GRL) via self-supervised learning schemes. The core idea is to learn by maximising mutual information for similar…

Machine Learning · Computer Science 2022-10-18 Yizhen Zheng , Shirui Pan , Vincent Cs Lee , Yu Zheng , Philip S. Yu

Pre-training a recognition model with contrastive learning on a large dataset of unlabeled data has shown great potential to boost the performance of a downstream task, e.g., image classification. However, in domains such as medical…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Jizong Peng , Ping Wang , Chrisitian Desrosiers , Marco Pedersoli

Graph pattern mining methods can extract informative and useful patterns from large-scale graphs and capture underlying principles through the overwhelmed information. Contrast analysis serves as a keystone in various fields and has…

Social and Information Networks · Computer Science 2018-02-20 Jingbo Shang , Xiyao Shi , Meng Jiang , Liyuan Liu , Timothy Hanratty , Jiawei Han

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

Attributed graph clustering is one of the most fundamental tasks among graph learning field, the goal of which is to group nodes with similar representations into the same cluster without human annotations. Recent studies based on graph…

Computer Vision and Pattern Recognition · Computer Science 2023-10-20 Tong Wang , Guanyu Yang , Qijia He , Zhenquan Zhang , Junhua Wu

Learning discriminative representations of unlabelled data is a challenging task. Contrastive self-supervised learning provides a framework to learn meaningful representations using learned notions of similarity measures from simple pretext…

Computer Vision and Pattern Recognition · Computer Science 2023-01-04 Nicklas Boserup , Raghavendra Selvan

Recent methods for learning unsupervised visual representations, dubbed contrastive learning, optimize the noise-contrastive estimation (NCE) bound on mutual information between two views of an image. NCE uses randomly sampled negative…

Machine Learning · Computer Science 2020-10-06 Mike Wu , Milan Mosse , Chengxu Zhuang , Daniel Yamins , Noah Goodman

Contrastive learning has demonstrated strong performance in attributed hypergraph clustering. Typically, existing methods based on contrastive learning first learn node embeddings and then apply clustering algorithms, such as k-means, to…

Machine Learning · Computer Science 2026-03-11 Li Ni , Shuaikang Zeng , Lin Mu , Longlong Lin

Test-time adaptation is a special setting of unsupervised domain adaptation where a trained model on the source domain has to adapt to the target domain without accessing source data. We propose a novel way to leverage self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2022-04-25 Dian Chen , Dequan Wang , Trevor Darrell , Sayna Ebrahimi

Graph clustering, which involves the partitioning of nodes within a graph into disjoint clusters, holds significant importance for numerous subsequent applications. Recently, contrastive learning, known for utilizing supervisory…

Machine Learning · Computer Science 2024-11-05 Yunhui Liu , Xinyi Gao , Tieke He , Tao Zheng , Jianhua Zhao , Hongzhi Yin
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