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Image augmentations are quintessential for effective visual representation learning across self-supervised learning techniques. While augmentation strategies for natural imaging have been studied extensively, medical images are vastly…

Image and Video Processing · Electrical Eng. & Systems 2023-07-12 Rogier van der Sluijs , Nandita Bhaskhar , Daniel Rubin , Curtis Langlotz , Akshay Chaudhari

Contrastive learning has become a key component of self-supervised learning approaches for graph-structured data. Despite their success, existing graph contrastive learning methods are incapable of uncertainty quantification for node…

The standard approach to contrastive learning is to maximize the agreement between different views of the data. The views are ordered in pairs, such that they are either positive, encoding different views of the same object, or negative,…

Computer Vision and Pattern Recognition · Computer Science 2023-02-21 Artem Moskalev , Ivan Sosnovik , Volker Fischer , Arnold Smeulders

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 gained popularity and pushes state-of-the-art performance across numerous large-scale benchmarks. In contrastive learning, the contrastive loss function plays a pivotal role in discerning similarities between…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Haojin Deng , Yimin Yang

Contrastive learning (CL) methods effectively learn data representations in a self-supervision manner, where the encoder contrasts each positive sample over multiple negative samples via a one-vs-many softmax cross-entropy loss. By…

Machine Learning · Computer Science 2023-08-16 Huangjie Zheng , Xu Chen , Jiangchao Yao , Hongxia Yang , Chunyuan Li , Ya Zhang , Hao Zhang , Ivor Tsang , Jingren Zhou , Mingyuan Zhou

Using deep learning techniques, anomalies in the paranasal sinus system can be detected automatically in MRI images and can be further analyzed and classified based on their volume, shape and other parameters like local contrast. However…

Inspired by the impressive success of contrastive learning (CL), a variety of graph augmentation strategies have been employed to learn node representations in a self-supervised manner. Existing methods construct the contrastive samples by…

Machine Learning · Computer Science 2022-12-14 Peiyao Zhao , Yuangang Pan , Xin Li , Xu Chen , Ivor W. Tsang , Lejian Liao

The effectiveness of contrastive learning in sequential recommendation hinges on the construction of contrastive views, which ideally should be both semantically consistent and diverse. However, most existing CL-based methods rely on…

Information Retrieval · Computer Science 2026-05-13 Wei Wang

Despite the astonishing performance of recent Large Vision-Language Models (LVLMs), these models often generate inaccurate responses. To address this issue, previous studies have focused on mitigating hallucinations by employing contrastive…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Sihyeon Kim , Boryeong Cho , Sangmin Bae , Sumyeong Ahn , Se-Young Yun

Contextual ranking models have delivered impressive performance improvements over classical models in the document ranking task. However, these highly over-parameterized models tend to be data-hungry and require large amounts of data even…

Information Retrieval · Computer Science 2022-07-08 Abhijit Anand , Jurek Leonhardt , Koustav Rudra , Avishek Anand

Chromosome recognition is an essential task in karyotyping, which plays a vital role in birth defect diagnosis and biomedical research. However, existing classification methods face significant challenges due to the inter-class similarity…

Computer Vision and Pattern Recognition · Computer Science 2023-12-14 Ruijia Chang , Suncheng Xiang , Chengyu Zhou , Kui Su , Dahong Qian , Jun Wang

Magnetic Resonance Imaging (MRI) is an important medical imaging modality, while it requires a long acquisition time. To reduce the acquisition time, various methods have been proposed. However, these methods failed to reconstruct images…

Image and Video Processing · Electrical Eng. & Systems 2021-12-01 Qiaosi Yi , Jinhao Liu , Le Hu , Faming Fang , Guixu Zhang

Contrastive learning demonstrates great promise for representation learning. Data augmentations play a critical role in contrastive learning by providing informative views of the data without necessitating explicit labels. Nonetheless, the…

Computer Vision and Pattern Recognition · Computer Science 2024-09-06 Zihu Wang , Yu Wang , Zhuotong Chen , Hanbin Hu , Peng Li

Self-supervised learning (SSL) has become prevalent for learning representations in computer vision. Notably, SSL exploits contrastive learning to encourage visual representations to be invariant under various image transformations. The…

Computer Vision and Pattern Recognition · Computer Science 2022-10-25 Swati Jindal , Roberto Manduchi

Self-supervised learning has proven to be an effective way to learn representations in domains where annotated labels are scarce, such as medical imaging. A widely adopted framework for this purpose is contrastive learning and it has been…

Computer Vision and Pattern Recognition · Computer Science 2024-02-23 Hugo Figueiras , Helena Aidos , Nuno Cruz Garcia

Contrastive learning has emerged as a competitive pretraining method for object detection. Despite this progress, there has been minimal investigation into the robustness of contrastively pretrained detectors when faced with domain shifts.…

Computer Vision and Pattern Recognition · Computer Science 2022-12-12 Kyle Buettner , Adriana Kovashka

Accurate lesion classification in Wireless Capsule Endoscopy (WCE) images is vital for early diagnosis and treatment of gastrointestinal (GI) cancers. However, this task is confronted with challenges like tiny lesions and background…

Computer Vision and Pattern Recognition · Computer Science 2024-01-12 Kunpeng Qiu , Zhiying Zhou , Yongxin Guo

Contrastive learning yields impressive results for self-supervision in computer vision. The approach relies on the creation of positive pairs, something which is often achieved through augmentations. However, for multivariate time series…

Signal Processing · Electrical Eng. & Systems 2026-05-25 Thea Brüsch , Mikkel N. Schmidt , Tommy S. Alstrøm

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…

Machine Learning · Computer Science 2024-08-07 Chu Zhao , Enneng Yang , Yuliang Liang , Jianzhe Zhao , Guibing Guo , Xingwei Wang
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