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Current contrastive learning methods use random transformations sampled from a large list of transformations, with fixed hyperparameters, to learn invariance from an unannotated database. Following previous works that introduce a small…

Machine Learning · Computer Science 2023-08-21 Camille Ruppli , Pietro Gori , Roberto Ardon , Isabelle Bloch

To date, the most common approach for radiology deep learning pipelines is the use of end-to-end 3D networks based on models pre-trained on other tasks, followed by fine-tuning on the task at hand. In contrast, adjacent medical fields such…

Computer Vision and Pattern Recognition · Computer Science 2024-11-27 Marta Ligero , Tim Lenz , Georg Wölflein , Omar S. M. El Nahhas , Daniel Truhn , Jakob Nikolas Kather

Anatomical abnormality detection and report generation of chest X-ray (CXR) are two essential tasks in clinical practice. The former aims at localizing and characterizing cardiopulmonary radiological findings in CXRs, while the latter…

Computer Vision and Pattern Recognition · Computer Science 2024-12-19 Jinghan Sun , Dong Wei , Zhe Xu , Donghuan Lu , Hong Liu , Hong Wang , Sotirios A. Tsaftaris , Steven McDonagh , Yefeng Zheng , Liansheng Wang

Recently, contrastive learning (CL) has emerged as a successful method for unsupervised graph representation learning. Most graph CL methods first perform stochastic augmentation on the input graph to obtain two graph views and maximize the…

Machine Learning · Computer Science 2021-03-01 Yanqiao Zhu , Yichen Xu , Feng Yu , Qiang Liu , Shu Wu , Liang Wang

Explaining decisions of black-box classifiers is paramount in sensitive domains such as medical imaging since clinicians confidence is necessary for adoption. Various explanation approaches have been proposed, among which perturbation based…

Computer Vision and Pattern Recognition · Computer Science 2020-12-15 Martin Charachon , Céline Hudelot , Paul-Henry Cournède , Camille Ruppli , Roberto Ardon

Contrastive learning, which aims to capture general representation from unlabeled images to initialize the medical analysis models, has been proven effective in alleviating the high demand for expensive annotations. Current methods mainly…

Computer Vision and Pattern Recognition · Computer Science 2022-08-18 Huai Chen , Renzhen Wang , Xiuying Wang , Jieyu Li , Qu Fang , Hui Li , Jianhao Bai , Qing Peng , Deyu Meng , Lisheng Wang

Contrastive learning is a form of self-supervision that can leverage unlabeled data to produce pretrained models. While contrastive learning has demonstrated promising results on natural image classification tasks, its application to…

Computer Vision and Pattern Recognition · Computer Science 2021-05-19 Hari Sowrirajan , Jingbo Yang , Andrew Y. Ng , Pranav Rajpurkar

Background: Breast ultrasound is prominently used in diagnosing breast tumors. At present, many automatic systems based on deep learning have been developed to help radiologists in diagnosis. However, training such systems remains…

Computer Vision and Pattern Recognition · Computer Science 2024-08-21 Yunxin Tang , Siyuan Tang , Jian Zhang , Hao Chen

When using large language models (LLMs) in knowledge-intensive tasks, such as open-domain question answering, external context can bridge the gap between external knowledge and the LLMs' parametric knowledge. Recent research has been…

Computation and Language · Computer Science 2024-10-08 Youna Kim , Hyuhng Joon Kim , Cheonbok Park , Choonghyun Park , Hyunsoo Cho , Junyeob Kim , Kang Min Yoo , Sang-goo Lee , Taeuk Kim

Background: Chest X-ray imaging-based abnormality localization, essential in diagnosing various diseases, faces significant clinical challenges due to complex interpretations and the growing workload of radiologists. While recent advances…

Computer Vision and Pattern Recognition · Computer Science 2024-02-12 Haoyue Sheng , Linrui Ma , Jean-Francois Samson , Dianbo Liu

Lung nodule malignancy prediction has been enhanced by advanced deep-learning techniques and effective tricks. Nevertheless, current methods are mainly trained with cross-entropy loss using one-hot categorical labels, which results in…

Computer Vision and Pattern Recognition · Computer Science 2023-10-03 Yiming Lei , Zilong Li , Yan Shen , Junping Zhang , Hongming Shan

Parotid gland tumor is a common type of head and neck tumor. Segmentation of the parotid glands and tumors by MR images is important for the treatment of parotid gland tumors. However, segmentation of the parotid glands is particularly…

Computer Vision and Pattern Recognition · Computer Science 2022-12-27 Zi'an Xu , Yin Dai , Fayu Liu , Boyuan Wu , Weibing Chen , Lifu Shi

Supervised learning can improve the design of state-of-the-art solvers for combinatorial problems, but labelling large numbers of combinatorial instances is often impractical due to exponential worst-case complexity. Inspired by the recent…

Machine Learning · Computer Science 2022-06-22 Haonan Duan , Pashootan Vaezipoor , Max B. Paulus , Yangjun Ruan , Chris J. Maddison

Contrastive learning has recently demonstrated superior performance to supervised learning, despite requiring no training labels. We explore how contrastive learning can be applied to hundreds of thousands of unlabeled Mars terrain images,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-18 Isaac Ronald Ward , Charles Moore , Kai Pak , Jingdao Chen , Edwin Goh

Recent advancements in image classification have demonstrated that contrastive learning (CL) can aid in further learning tasks by acquiring good feature representation from a limited number of data samples. In this paper, we applied CL to…

Machine Learning · Computer Science 2024-10-22 Anchen Sun , Elizabeth J. Franzmann , Zhibin Chen , Xiaodong Cai

Learning representations of images that are invariant to sensitive or unwanted attributes is important for many tasks including bias removal and cross domain retrieval. Here, our objective is to learn representations that are invariant to…

Computer Vision and Pattern Recognition · Computer Science 2022-03-23 Jonathan Kahana , Yedid Hoshen

Contrastive representation learning has shown to be effective to learn representations from unlabeled data. However, much progress has been made in vision domains relying on data augmentations carefully designed using domain knowledge. In…

Machine Learning · Computer Science 2021-03-19 Kibok Lee , Yian Zhu , Kihyuk Sohn , Chun-Liang Li , Jinwoo Shin , Honglak Lee

We propose a framework using contrastive learning as a pre-training task to perform image classification in the presence of noisy labels. Recent strategies such as pseudo-labeling, sample selection with Gaussian Mixture models, weighted…

Computer Vision and Pattern Recognition · Computer Science 2021-04-21 Madalina Ciortan , Romain Dupuis , Thomas Peel

In this paper, we introduce an unsupervised cancer segmentation framework for histology images. The framework involves an effective contrastive learning scheme for extracting distinctive visual representations for segmentation. The encoder…

Computer Vision and Pattern Recognition · Computer Science 2022-06-20 Yilong Li , Yaqi Wang , Huiyu Zhou , Huaqiong Wang , Gangyong Jia , Qianni Zhang

In contrastive representation learning, data representation is trained so that it can classify the image instances even when the images are altered by augmentations. However, depending on the datasets, some augmentations can damage the…

Machine Learning · Statistics 2021-11-16 Masanori Koyama , Kentaro Minami , Takeru Miyato , Yarin Gal
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