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Deep learning models for atrial fibrillation (AF) detection are increasingly trained on heterogeneous electrocardiogram (ECG) datasets with varying sampling frequencies, yet the specific consequences of these discrepancies on model…

In this study, we focus on the training process and inference improvements of deep neural networks (DNNs), specifically Autoencoders (AEs) and Variational Autoencoders (VAEs), using Random Fourier Transformation (RFT). We further explore…

Machine Learning · Computer Science 2026-02-26 Ata Akbari Asanjan , Milad Memarzadeh , Bryan Matthews , Nikunj Oza

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…

Signal Processing · Electrical Eng. & Systems 2024-01-12 Noam Ben-Moshe , Kenta Tsutsui , Shany Biton , Leif Sörnmo , Joachim A. Behar

Traditional sleep staging categorizes sleep and wakefulness into five coarse-grained classes, overlooking subtle variations within each stage. It provides limited information about the duration of arousal and may hinder research on sleep…

Machine Learning · Computer Science 2024-12-10 Songchi Zhou , Ge Song , Haoqi Sun , Yue Leng , M. Brandon Westover , Shenda Hong

The electrocardiogram (ECG) monitoring device is an expensive albeit essential device for the treatment and diagnosis of cardiovascular diseases (CVD). The cost of this device typically ranges from $2000 to $10000. Several studies have…

Machine Learning · Computer Science 2025-04-07 Md Abu Obaida Zishan , H M Shihab , Sabik Sadman Islam , Maliha Alam Riya , Gazi Mashrur Rahman , Jannatun Noor

In this paper, we propose a frequency-time division network (FreqTimeNet) to improve the performance of deep learning (DL) based OFDM channel estimation. This FreqTimeNet is designed based on the orthogonality between the frequency domain…

Information Theory · Computer Science 2021-10-01 Ang Yang , Peng Sun , Tamrakar Rakesh , Bule Sun , Fei Qin

Aortic stenosis (AS) is a common heart valve disease that requires accurate and timely diagnosis for appropriate treatment. Most current automatic AS severity detection methods rely on black-box models with a low level of trustworthiness,…

Computer Vision and Pattern Recognition · Computer Science 2023-07-28 Hooman Vaseli , Ang Nan Gu , S. Neda Ahmadi Amiri , Michael Y. Tsang , Andrea Fung , Nima Kondori , Armin Saadat , Purang Abolmaesumi , Teresa S. M. Tsang

Deep learning provides an excellent avenue for optimizing diagnosis and patient monitoring for clinical-based applications, which can critically enhance the response time to the onset of various conditions. For cardiovascular disease, one…

Machine Learning · Computer Science 2023-02-23 Ankur Samanta , Mark Karlov , Meghna Ravikumar , Christian McIntosh Clarke , Jayakumar Rajadas , Kaveh Hassani

Atrial Fibrillation (AF) is a common cardiac arrhythmia. Many AF patients experience complications such as stroke and other cardiovascular issues. Early detection of AF is crucial. Existing algorithms can only distinguish ``AF rhythm in AF…

Signal Processing · Electrical Eng. & Systems 2024-10-03 Jun Lei , Yuxi Zhou , Xue Tian , Qinghao Zhao , Qi Zhang , Shijia Geng , Qingbo Wu , Shenda Hong

Segmenting of clinically important retinal blood vessels into arteries and veins is a prerequisite for retinal vessel analysis. Such analysis can provide potential insights and bio-markers for identifying and diagnosing various retinal eye…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Sharan SK , Subin Sahayam , Umarani Jayaraman , Lakshmi Priya A

Electrocardiogram (ECG) is a simple non-invasive measure to identify heart-related issues such as irregular heartbeats known as arrhythmias. While artificial intelligence and machine learning is being utilized in a wide range of healthcare…

Machine Learning · Computer Science 2022-07-11 Minh Cao , Tianqi Zhao , Yanxun Li , Wenhao Zhang , Peyman Benharash , Ramin Ramezani

A network-based approach is presented to investigate the cerebrovascular flow patterns during atrial fibrillation (AF) with respect to normal sinus rhythm (NSR). AF, the most common cardiac arrhythmia with faster and irregular beating, has…

Data Analysis, Statistics and Probability · Physics 2017-09-27 Stefania Scarsoglio , Fabio Cazzato , Luca Ridolfi

We propose learning deep models that are monotonic with respect to a user-specified set of inputs by alternating layers of linear embeddings, ensembles of lattices, and calibrators (piecewise linear functions), with appropriate constraints…

Machine Learning · Statistics 2017-09-21 Seungil You , David Ding , Kevin Canini , Jan Pfeifer , Maya Gupta

This paper studies the emotion recognition from musical tracks in the 2-dimensional valence-arousal (V-A) emotional space. We propose a method based on convolutional (CNN) and recurrent neural networks (RNN), having significantly fewer…

Automatic segmentation of vestibular schwannoma (VS) tumors from magnetic resonance imaging (MRI) would facilitate efficient and accurate volume measurement to guide patient management and improve clinical workflow. The accuracy and…

Image and Video Processing · Electrical Eng. & Systems 2019-10-22 Guotai Wang , Jonathan Shapey , Wenqi Li , Reuben Dorent , Alex Demitriadis , Sotirios Bisdas , Ian Paddick , Robert Bradford , Sebastien Ourselin , Tom Vercauteren

Left atrium shape has been shown to be an independent predictor of recurrence after atrial fibrillation (AF) ablation. Shape-based representation is imperative to such an estimation process, where correspondence-based representation offers…

In this work we propose a new method for the rhythm classification of short single-lead ECG records, using a set of high-level and clinically meaningful features provided by the abductive interpretation of the records. These features…

Artificial Intelligence · Computer Science 2021-12-09 Tomás Teijeiro , Constantino A. García , Daniel Castro , Paulo Félix

In this work, we propose a deep learning approach for parallel magnetic resonance imaging (MRI) reconstruction, termed a variable splitting network (VS-Net), for an efficient, high-quality reconstruction of undersampled multi-coil MR data.…

Image and Video Processing · Electrical Eng. & Systems 2019-07-24 Jinming Duan , Jo Schlemper , Chen Qin , Cheng Ouyang , Wenjia Bai , Carlo Biffi , Ghalib Bello , Ben Statton , Declan P O'Regan , Daniel Rueckert

The complexity of the patterns associated with Atrial Fibrillation (AF) and the high level of noise affecting these patterns have significantly limited the current signal processing and shallow machine learning approaches to get accurate AF…

Quantitative Methods · Quantitative Biology 2019-02-18 Sajad Mousavi , Fatemeh Afghah , Abolfazl Razi , U. Rajendra Acharya

Ischemic heart disease (IHD), particularly in its chronic stable form, is a subtle pathology due to its silent behavior before developing in unstable angina, myocardial infarction or sudden cardiac death. Machine learning techniques applied…

Signal Processing · Electrical Eng. & Systems 2020-11-20 Giulia Silveri , Marco Merlo , Luca Restivo , Gianfranco Sinagra , Agostino Accardo
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