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Deep Learning (DL) is a two-step classification model that consists feature learning, generating feature representations using unsupervised ways and the supervised learning stage at the last step of model using at least two hidden layers on…

Machine Learning · Computer Science 2021-01-26 Gokhan Altan , Yakup Kutlu

The performance of supervised deep learning methods for medical image segmentation is often limited by the scarcity of labeled data. As a promising research direction, semi-supervised learning addresses this dilemma by leveraging unlabeled…

Image and Video Processing · Electrical Eng. & Systems 2024-05-13 Zihang Liu , Chunhui Zhao

Unsupervised anomaly detection (UAD) presents a complementary alternative to supervised learning for brain tumor segmentation in magnetic resonance imaging (MRI), particularly when annotated datasets are limited, costly, or inconsistent. In…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Gerard Comas-Quiles , Carles Garcia-Cabrera , Julia Dietlmeier , Noel E. O'Connor , Ferran Marques

Estimation of uncertainty in deep learning models is of vital importance, especially in medical imaging, where reliance on inference without taking into account uncertainty could lead to misdiagnosis. Recently, the probabilistic Variational…

Machine Learning · Computer Science 2020-10-20 Haleh Akrami , Anand A. Joshi , Sergul Aydore , Richard M. Leahy

The scarcity of labeled data often limits the application of supervised deep learning techniques for medical image segmentation. This has motivated the development of semi-supervised techniques that learn from a mixture of labeled and…

Computer Vision and Pattern Recognition · Computer Science 2019-11-05 Gerda Bortsova , Florian Dubost , Laurens Hogeweg , Ioannis Katramados , Marleen de Bruijne

The generative learning phase of Autoencoder (AE) and its successor Denosing Autoencoder (DAE) enhances the flexibility of data stream method in exploiting unlabelled samples. Nonetheless, the feasibility of DAE for data stream analytic…

Machine Learning · Computer Science 2018-09-25 Mahardhika Pratama , Andri Ashfahani , Yew Soon Ong , Savitha Ramasamy , Edwin Lughofer

We present an unsupervised 3D shape co-segmentation method which learns a set of deformable part templates from a shape collection. To accommodate structural variations in the collection, our network composes each shape by a selected subset…

Computer Vision and Pattern Recognition · Computer Science 2024-04-29 Zhiqin Chen , Qimin Chen , Hang Zhou , Hao Zhang

Clinical guidelines underscore the importance of regularly monitoring and surveilling arteriovenous fistula (AVF) access in hemodialysis patients to promptly detect any dysfunction. Although phono-angiography/sound analysis overcomes the…

Machine Learning · Computer Science 2023-06-13 Li-Chin Chen , Yi-Heng Lin , Li-Ning Peng , Feng-Ming Wang , Yu-Hsin Chen , Po-Hsun Huang , Shang-Feng Yang , Yu Tsao

Standard segmentation of medical images based on full-supervised convolutional networks demands accurate dense annotations. Such learning framework is built on laborious manual annotation with restrict demands for expertise, leading to…

Computer Vision and Pattern Recognition · Computer Science 2020-10-26 Liyan Sun , Jianxiong Wu , Xinghao Ding , Yue Huang , Guisheng Wang , Yizhou Yu

Simultaneous EEG-fMRI recording combines high temporal and spatial resolution for tracking neural activity. However, its usefulness is greatly limited by artifacts from magnetic resonance (MR), especially gradient artifacts (GA) and…

Signal Processing · Electrical Eng. & Systems 2025-07-31 K. A. Shahriar , E. H. Bhuiyan , Q. Luo , M. E. H. Chowdhury , X. J. Zhou

The time-consuming task of manual segmentation challenges routine systematic quantification of disease burden. Convolutional neural networks (CNNs) hold significant promise to reliably identify locations and boundaries of tumors from PET…

In this study, we examine the representation learning abilities of Denoising Diffusion Models (DDM) that were originally purposed for image generation. Our philosophy is to deconstruct a DDM, gradually transforming it into a classical…

Computer Vision and Pattern Recognition · Computer Science 2024-01-26 Xinlei Chen , Zhuang Liu , Saining Xie , Kaiming He

Semi-supervised learning is attracting increasing attention due to the fact that datasets of many domains lack enough labeled data. Variational Auto-Encoder (VAE), in particular, has demonstrated the benefits of semi-supervised learning.…

Machine Learning · Computer Science 2018-12-04 Yang Li , Quan Pan , Suhang Wang , Haiyun Peng , Tao Yang , Erik Cambria

Stacked denoising autoencoders (SDAs) have been successfully used to learn new representations for domain adaptation. Recently, they have attained record accuracy on standard benchmark tasks of sentiment analysis across different text…

Machine Learning · Computer Science 2012-06-22 Minmin Chen , Zhixiang Xu , Kilian Weinberger , Fei Sha

In contrast to fully-supervised models, self-supervised representation learning only needs a fraction of data to be labeled and often achieves the same or even higher downstream performance. The goal is to pre-train deep neural networks on…

Machine Learning · Computer Science 2025-04-09 Friederike Baier , Sebastian Mair , Samuel G. Fadel

Accurate gland segmentation in histopathology images is essential for cancer diagnosis and prognosis. However, significant variability in Hematoxylin and Eosin (H&E) staining and tissue morphology, combined with limited annotated data,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Ha-Hieu Pham , Nguyen Lan Vi Vu , Thanh-Huy Nguyen , Ulas Bagci , Min Xu , Trung-Nghia Le , Huy-Hieu Pham

In this paper, we propose a new self-supervised method, which is called Denoising Masked AutoEncoders (DMAE), for learning certified robust classifiers of images. In DMAE, we corrupt each image by adding Gaussian noises to each pixel value…

Computer Vision and Pattern Recognition · Computer Science 2023-03-08 Quanlin Wu , Hang Ye , Yuntian Gu , Huishuai Zhang , Liwei Wang , Di He

Brain MRI foundation models learn rich representations of anatomy, but interpreting what clinical information they encode remains an open problem. Standard sparse autoencoders (SAEs) suffer from severe feature collapse in deep transformer…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Favour Nerrise , Lucy Yin , Mohammad H. Abbasi , Kilian M. Pohl , Ehsan Adeli

Deep learning models for medical image classification usually achieve promising results but typically rely on large, annotated datasets or standard transfer learning from ImageNet. Self-Supervised Learning (SSL) has emerged as a powerful…

Computer Vision and Pattern Recognition · Computer Science 2026-05-07 Joao Batista Florindo , Amanda Pontes de Oliveira Ornelas

Deep learning has made significant strides in medical imaging, leveraging the use of large datasets to improve diagnostics and prognostics. However, large datasets often come with inherent errors through subject selection and acquisition.…