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We propose two deep neural network architectures for classification of arbitrary-length electrocardiogram (ECG) recordings and evaluate them on the atrial fibrillation (AF) classification data set provided by the PhysioNet/CinC Challenge…

机器学习 · 计算机科学 2018-04-10 Martin Zihlmann , Dmytro Perekrestenko , Michael Tschannen

It is challenging to visually detect heart disease from the electrocardiographic (ECG) signals. Implementing an automated ECG signal detection system can help diagnosis arrhythmia in order to improve the accuracy of diagnosis. In this…

信号处理 · 电气工程与系统科学 2020-11-13 Jiacheng Wang , Weiheng Li

Neural network models have demonstrated impressive performance in predicting pathologies and outcomes from the 12-lead electrocardiogram (ECG). However, these models often need to be trained with large, labelled datasets, which are not…

机器学习 · 计算机科学 2022-04-12 Aniruddh Raghu , Divya Shanmugam , Eugene Pomerantsev , John Guttag , Collin M. Stultz

Test-time adaptation (TTA) allows a model to be adapted to an unseen domain without accessing the source data. Due to the nature of practical environments, TTA has a limited amount of data for adaptation. Recent TTA methods further restrict…

计算机视觉与模式识别 · 计算机科学 2024-10-21 Younggeol Cho , Youngrae Kim , Junho Yoon , Seunghoon Hong , Dongman Lee

Atrial fibrillation is a clinical arrhythmia with multifactorial mechanisms still unresolved. Time-frequency analysis of epicardial electrograms has been investigated to study atrial fibrillation. However, deeper understanding of atrial…

信号处理 · 电气工程与系统科学 2019-10-15 Miao Sun , Elvin Isufi , Natasja M. S. de Groot , Richard C. Hendriks

Purpose: Applying pre-trained medical deep learning segmentation models on out-of-domain images often yields predictions of insufficient quality. In this study, we propose to use a powerful generalizing descriptor along with augmentation to…

计算机视觉与模式识别 · 计算机科学 2025-04-02 Christian Weihsbach , Christian N. Kruse , Alexander Bigalke , Mattias P. Heinrich

Despite domain generalization (DG) has significantly addressed the performance degradation of pre-trained models caused by domain shifts, it often falls short in real-world deployment. Test-time adaptation (TTA), which adjusts a learned…

计算机视觉与模式识别 · 计算机科学 2025-03-18 Xingguo Lv , Xingbo Dong , Liwen Wang , Jiewen Yang , Lei Zhao , Bin Pu , Zhe Jin , Xuejun Li

Deep neural networks (DNN) are a promising tool in medical applications. However, the implementation of complex DNNs on battery-powered devices is challenging due to high energy costs for communication. In this work, a convolutional neural…

信号处理 · 电气工程与系统科学 2022-06-16 Xiu Qi Chang , Ann Feng Chew , Benjamin Chen Ming Choong , Shuhui Wang , Rui Han , Wang He , Li Xiaolin , Rajesh C. Panicker , Deepu John

Prior to the deployment of robotic systems, pre-training the deep-recognition models on all potential visual cases is infeasible in practice. Hence, test-time adaptation (TTA) allows the model to adapt itself to novel environments and…

计算机视觉与模式识别 · 计算机科学 2023-04-18 Junha Song , Kwanyong Park , InKyu Shin , Sanghyun Woo , Chaoning Zhang , In So Kweon

Domain adaptation (DA) techniques help deep learning models generalize across data shifts for point cloud semantic segmentation (PCSS). Test-time adaptation (TTA) allows direct adaptation of a pre-trained model to unlabeled data during…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Puzuo Wang , Wei Yao , Jie Shao , Zhiyi He

Deep classifiers may encounter significant performance degradation when processing unseen testing data from varying centers, vendors, and protocols. Ensuring the robustness of deep models against these domain shifts is crucial for their…

计算机视觉与模式识别 · 计算机科学 2023-06-06 Yuhao Huang , Xin Yang , Xiaoqiong Huang , Xinrui Zhou , Haozhe Chi , Haoran Dou , Xindi Hu , Jian Wang , Xuedong Deng , Dong Ni

Atrial fibrillation (AF) is the most common cardiac arrhythmia, which is clinically identified with irregular and rapid heartbeat rhythm. AF puts a patient at risk of forming blood clots, which can eventually lead to heart failure, stroke,…

信号处理 · 电气工程与系统科学 2023-06-28 Jianxin Xie , Stavros Stavrakis , Bing Yao

In this paper, we focus on a new method of data augmentation to solve the data imbalance problem within imbalanced ECG datasets to improve the robustness and accuracy of heart disease detection. By using Optimal Transport, we augment the…

信号处理 · 电气工程与系统科学 2023-02-20 Jielin Qiu , Jiacheng Zhu , Mengdi Xu , Peide Huang , Michael Rosenberg , Douglas Weber , Emerson Liu , Ding Zhao

Atrial Fibrillation is a heart condition characterized by erratic heart rhythms caused by chaotic propagation of electrical impulses in the atria, leading to numerous health complications. State-of-the-art models employ complex algorithms…

定量方法 · 定量生物学 2019-12-02 Paul Samuel Ignacio , David Uminsky , Christopher Dunstan , Esteban Escobar , Luke Trujillo

Deep learning models have demonstrated exceptional performance across a wide range of computer vision tasks. However, their performance often degrades significantly when faced with distribution shifts, such as domain or dataset changes.…

计算机视觉与模式识别 · 计算机科学 2025-07-09 Samuel Barbeau , Pedram Fekri , David Osowiechi , Ali Bahri , Moslem Yazdanpanah , Masih Aminbeidokhti , Christian Desrosiers

Introduction: Deep learning models for detecting episodes of atrial fibrillation (AF) using rhythm information in long-term, ambulatory ECG recordings have shown high performance. However, the rhythm-based approach does not take advantage…

信号处理 · 电气工程与系统科学 2024-01-12 Noam Ben-Moshe , Kenta Tsutsui , Shany Biton , Leif Sörnmo , Joachim A. Behar

Heart auscultations are a low-cost and effective way of detecting valvular heart diseases early, which can save lives. Nevertheless, it has been difficult to scale this screening method since the effectiveness of auscultations is dependent…

音频与语音处理 · 电气工程与系统科学 2023-09-15 Ansh Mishra , Jia Qi Yip , Eng Siong Chng

Test-time adaptation (TTA) refers to adjusting the model during the testing phase to cope with changes in sample distribution and enhance the model's adaptability to new environments. In real-world scenarios, models often encounter samples…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Ziqiong Liu , Yushun Tang , Junyang Ji , Zhihai He

Except for a few specific types, cardiac arrhythmias are not immediately life-threatening. However, if not treated appropriately, they can cause serious complications. In particular, atrial fibrillation, which is characterized by fast and…

机器学习 · 计算机科学 2020-10-08 Jérôme Van Zaen , Ricard Delgado-Gonzalo , Damien Ferrario Mathieu Lemay

Deploying deep models in real-world scenarios remains challenging due to significant performance drops under distribution shifts between training and deployment environments. Test-Time Adaptation (TTA) has recently emerged as a promising…

机器学习 · 计算机科学 2025-12-01 Zixian Su , Jingwei Guo , Xi Yang , Qiufeng Wang , Kaizhu Huang