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We propose the Autoencoding Binary Classifiers (ABC), a novel supervised anomaly detector based on the Autoencoder (AE). There are two main approaches in anomaly detection: supervised and unsupervised. The supervised approach accurately…

机器学习 · 统计学 2019-03-27 Yuki Yamanaka , Tomoharu Iwata , Hiroshi Takahashi , Masanori Yamada , Sekitoshi Kanai

Self-supervised models allow (pre-)training on unlabeled data and therefore have the potential to overcome the need for large annotated cohorts. One leading self-supervised model is the masked autoencoder (MAE) which was developed on…

图像与视频处理 · 电气工程与系统科学 2023-03-13 Daniel M. Lang , Eli Schwartz , Cosmin I. Bercea , Raja Giryes , Julia A. Schnabel

Deep learning methods can classify various unstructured data such as images, language, and voice as input data. As the task of classifying anomalies becomes more important in the real world, various methods exist for classifying using deep…

计算机视觉与模式识别 · 计算机科学 2022-01-06 UJu Gim , YeongHyeon Park

In medical imaging, anomaly detection is a vital element of healthcare diagnostics, especially for neurological conditions which can be life-threatening. Conventional deterministic methods often fall short when it comes to capturing the…

机器学习 · 计算机科学 2025-04-23 Dip Roy

Unsupervised anomaly detection aims to build models to effectively detect unseen anomalies by only training on the normal data. Although previous reconstruction-based methods have made fruitful progress, their generalization ability is…

机器学习 · 计算机科学 2022-01-04 Yuxin Zhang , Jindong Wang , Yiqiang Chen , Han Yu , Tao Qin

Feature selection is a dimensionality reduction technique that selects a subset of representative features from high dimensional data by eliminating irrelevant and redundant features. Recently, feature selection combined with sparse…

计算机视觉与模式识别 · 计算机科学 2018-04-24 Siwei Feng , Marco F. Duarte

Recent advancements in large-scale visual-language pre-trained models have led to significant progress in zero-/few-shot anomaly detection within natural image domains. However, the substantial domain divergence between natural and medical…

计算机视觉与模式识别 · 计算机科学 2024-03-20 Chaoqin Huang , Aofan Jiang , Jinghao Feng , Ya Zhang , Xinchao Wang , Yanfeng Wang

Lesion detection in brain Magnetic Resonance Images (MRI) remains a challenging task. State-of-the-art approaches are mostly based on supervised learning making use of large annotated datasets. Human beings, on the other hand, even…

计算机视觉与模式识别 · 计算机科学 2018-06-14 Xiaoran Chen , Ender Konukoglu

Time series anomaly detection is important in modern large-scale systems and is applied in a variety of domains to analyze and monitor the operation of diverse systems. Unsupervised approaches have received widespread interest, as they do…

机器学习 · 计算机科学 2025-10-23 Buang Zhang , Tung Kieu , Xiangfei Qiu , Chenjuan Guo , Jilin Hu , Aoying Zhou , Christian S. Jensen , Bin Yang

Anomaly detection - identifying deviations from Standard Model predictions - is a key challenge at the Large Hadron Collider due to the size and complexity of its datasets. This is typically addressed by transforming high-dimensional…

高能物理 - 实验 · 物理学 2025-12-03 Kyle Metzger , Lana Xu , Mia Sodini , Thea K. Arrestad , Katya Govorkova , Gaia Grosso , Philip Harris

Robust and accurate detection and segmentation of heterogenous tumors appearing in different anatomical organs with supervised methods require large-scale labeled datasets covering all possible types of diseases. Due to the unavailability…

计算机视觉与模式识别 · 计算机科学 2023-05-23 Mehdi Astaraki , Francesca De Benetti , Yousef Yeganeh , Iuliana Toma-Dasu , Örjan Smedby , Chunliang Wang , Nassir Navab , Thomas Wendler

Semi-supervised learning relaxes the need of large pixel-wise labeled datasets for image segmentation by leveraging unlabeled data. A prominent way to exploit unlabeled data is to regularize model predictions. Since the predictions of…

计算机视觉与模式识别 · 计算机科学 2023-10-26 Sukesh Adiga , Jose Dolz , Herve Lombaert

Autoencoders are unsupervised deep learning models used for learning representations. In literature, autoencoders have shown to perform well on a variety of tasks spread across multiple domains, thereby establishing widespread…

计算机视觉与模式识别 · 计算机科学 2018-10-16 Maneet Singh , Shruti Nagpal , Mayank Vatsa , Richa Singh , Afzel Noore

Anomaly detection plays a crucial role in various real-world applications, including healthcare and finance systems. Owing to the limited number of anomaly labels in these complex systems, unsupervised anomaly detection methods have…

机器学习 · 计算机科学 2023-10-10 Zongyuan Huang , Baohua Zhang , Guoqiang Hu , Longyuan Li , Yanyan Xu , Yaohui Jin

Anomaly detection and localization in medical images is a challenging task, especially when the anomaly exhibits a change of existing structures, e.g., brain atrophy or changes in the pleural space due to pleural effusions. In this work, we…

图像与视频处理 · 电气工程与系统科学 2020-07-29 Julia Wolleb , Robin Sandkühler , Philippe C. Cattin

Automatic segmentation of brain abnormalities is challenging, as they vary considerably from one pathology to another. Current methods are supervised and require numerous annotated images for each pathology, a strenuous task. To tackle…

图像与视频处理 · 电气工程与系统科学 2021-01-27 Benjamin Lambert , Maxime Louis , Senan Doyle , Florence Forbes , Michel Dojat , Alan Tucholka

Semi-supervised anomaly detection, which aims to improve the anomaly detection performance by using a small amount of labeled anomaly data in addition to unlabeled data, has attracted attention. Existing semi-supervised approaches assume…

机器学习 · 统计学 2025-02-11 Hiroshi Takahashi , Tomoharu Iwata , Atsutoshi Kumagai , Yuuki Yamanaka

Anomaly detection without priors of the anomalies is challenging. In the field of unsupervised anomaly detection, traditional auto-encoder (AE) tends to fail based on the assumption that by training only on normal images, the model will not…

计算机视觉与模式识别 · 计算机科学 2024-08-15 Yajie Cui , Zhaoxiang Liu , Shiguo Lian

Unsupervised learning can leverage large-scale data sources without the need for annotations. In this context, deep learning-based auto encoders have shown great potential in detecting anomalies in medical images. However, state-of-the-art…

机器学习 · 计算机科学 2018-12-17 David Zimmerer , Simon A. A. Kohl , Jens Petersen , Fabian Isensee , Klaus H. Maier-Hein

The quality of patient care associated with diagnostic radiology is proportionate to a physician workload. Segmentation is a fundamental limiting precursor to both diagnostic and therapeutic procedures. Advances in machine learning (ML) aim…

图像与视频处理 · 电气工程与系统科学 2022-08-30 Ahmed Ghorbel , Ahmed Aldahdooh , Shadi Albarqouni , Wassim Hamidouche