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Semisupervised text classification has become a major focus of research over the past few years. Hitherto, most of the research has been based on supervised learning, but its main drawback is the unavailability of labeled data samples in…

机器学习 · 计算机科学 2021-11-17 Shivani Malhotra , Vinay Kumar , Alpana Agarwal

As research interests in medical image analysis become increasingly fine-grained, the cost for extensive annotation also rises. One feasible way to reduce the cost is to annotate with coarse-grained superclass labels while using limited…

计算机视觉与模式识别 · 计算机科学 2023-07-04 Linrui Dai , Wenhui Lei , Xiaofan Zhang

Generalising deep models to new data from new centres (termed here domains) remains a challenge. This is largely attributed to shifts in data statistics (domain shifts) between source and unseen domains. Recently, gradient-based…

计算机视觉与模式识别 · 计算机科学 2021-10-05 Xiao Liu , Spyridon Thermos , Alison O'Neil , Sotirios A. Tsaftaris

Biomedical image segmentation plays a significant role in computer-aided diagnosis. However, existing CNN based methods rely heavily on massive manual annotations, which are very expensive and require huge human resources. In this work, we…

计算机视觉与模式识别 · 计算机科学 2023-01-13 Ruifei Zhang , Sishuo Liu , Yizhou Yu , Guanbin Li

End-to-end weakly supervised semantic segmentation aims at optimizing a segmentation model in a single-stage training process based on only image annotations. Existing methods adopt an online-trained classification branch to provide pseudo…

计算机视觉与模式识别 · 计算机科学 2023-08-10 Lei Zhu , Hangzhou He , Xinliang Zhang , Qian Chen , Shuang Zeng , Qiushi Ren , Yanye Lu

Semi-supervised learning has attracted great attention in the field of machine learning, especially for medical image segmentation tasks, since it alleviates the heavy burden of collecting abundant densely annotated data for training.…

计算机视觉与模式识别 · 计算机科学 2021-07-08 Yicheng Wu , Minfeng Xu , Zongyuan Ge , Jianfei Cai , Lei Zhang

Deep convolutional neural networks (CNNs) are state-of-the-art for semantic image segmentation, but typically require many labeled training samples. Obtaining 3D segmentations of medical images for supervised training is difficult and labor…

计算机视觉与模式识别 · 计算机科学 2019-07-29 Zhenlin Xu , Marc Niethammer

Supervised learning has proved effective for medical image analysis. However, it can utilize only the small labeled portion of data; it fails to leverage the large amounts of unlabeled data that is often available in medical image datasets.…

计算机视觉与模式识别 · 计算机科学 2020-04-28 Gaurav Fotedar , Nima Tajbakhsh , Shilpa Ananth , Xiaowei Ding

Semi-supervised 3D medical image segmentation aims to achieve accurate segmentation using few labelled data and numerous unlabelled data. The main challenge in the design of semi-supervised learning methods consists in the effective use of…

计算机视觉与模式识别 · 计算机科学 2025-02-18 Yanyan Wang , Kechen Song , Yuyuan Liu , Shuai Ma , Yunhui Yan , Gustavo Carneiro

Most recent semantic segmentation methods train deep convolutional neural networks with fully annotated masks requiring pixel-accuracy for good quality training. Common weakly-supervised approaches generate full masks from partial input…

计算机视觉与模式识别 · 计算机科学 2018-04-05 Meng Tang , Abdelaziz Djelouah , Federico Perazzi , Yuri Boykov , Christopher Schroers

Most of the current state-of-the-art methods for tumor segmentation are based on machine learning models trained on manually segmented images. This type of training data is particularly costly, as manual delineation of tumors is not only…

计算机视觉与模式识别 · 计算机科学 2019-08-21 Pawel Mlynarski , Hervé Delingette , Antonio Criminisi , Nicholas Ayache

Semi-supervised segmentation tackles the scarcity of annotations by leveraging unlabeled data with a small amount of labeled data. A prominent way to utilize the unlabeled data is by consistency training which commonly uses a…

计算机视觉与模式识别 · 计算机科学 2022-03-14 Sukesh Adiga , Jose Dolz , Herve Lombaert

Semi-supervised learning via teacher-student network can train a model effectively on a few labeled samples. It enables a student model to distill knowledge from the teacher's predictions of extra unlabeled data. However, such knowledge…

计算机视觉与模式识别 · 计算机科学 2023-05-29 Hongkuan Shi , Zhiwei Wang , Ying Zhou , Dun Li , Xin Yang , Qiang Li

Despite the availability of large datasets for tasks like image classification and image-text alignment, labeled data for more complex recognition tasks, such as detection and segmentation, is less abundant. In particular, for instance…

计算机视觉与模式识别 · 计算机科学 2024-03-19 François Porcher , Camille Couprie , Marc Szafraniec , Jakob Verbeek

Using deep learning, we now have the ability to create exceptionally good semantic segmentation systems; however, collecting the prerequisite pixel-wise annotations for training images remains expensive and time-consuming. Therefore, it…

计算机视觉与模式识别 · 计算机科学 2022-10-19 Aneesh Rangnekar , Christopher Kanan , Matthew Hoffman

A large labeled dataset is a key to the success of supervised deep learning, but for medical image segmentation, it is highly challenging to obtain sufficient annotated images for model training. In many scenarios, unannotated images are…

计算机视觉与模式识别 · 计算机科学 2021-07-13 Hao Zheng , Jun Han , Hongxiao Wang , Lin Yang , Zhuo Zhao , Chaoli Wang , Danny Z. Chen

Accurate brain tumor segmentation from MRI is limited by expensive annotations and data heterogeneity across scanners and sites. We propose a semi-supervised teacher-student framework that combines an uncertainty-aware pseudo-labeling…

计算机视觉与模式识别 · 计算机科学 2026-02-10 Jiaming Liu , Cheng Ding , Daoqiang Zhang

High annotation costs are a major bottleneck for the training of semantic segmentation systems. Therefore, methods working with less annotation effort are of special interest. This paper studies the problem of semi-supervised semantic…

计算机视觉与模式识别 · 计算机科学 2021-03-22 Olga Zatsarynna , Johann Sawatzky , Juergen Gall

Deep learning usually requires large amounts of labeled training data, but annotating data is costly and tedious. The framework of semi-supervised learning provides the means to use both labeled data and arbitrary amounts of unlabeled data…

计算机视觉与模式识别 · 计算机科学 2019-04-19 Christoph Baur , Shadi Albarqouni , Nassir Navab

Semi-supervised learning (SSL) has emerged as a promising paradigm in medical image segmentation, offering competitive performance while substantially reducing the need for extensive manual annotation. When combined with active learning…

计算机视觉与模式识别 · 计算机科学 2025-09-25 Yi Yang