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Electrocardiogram (ECG) datasets tend to be highly imbalanced due to the scarcity of abnormal cases. Additionally, the use of real patients' ECGs is highly regulated due to privacy issues. Therefore, there is always a need for more ECG…

Machine Learning · Computer Science 2022-08-25 Edmond Adib , Fatemeh Afghah , John J. Prevost

Echocardiography (ECHO) video is widely used for cardiac examination. In clinical, this procedure heavily relies on operator experience, which needs years of training and maybe the assistance of deep learning-based systems for enhanced…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Xinrui Zhou , Yuhao Huang , Wufeng Xue , Haoran Dou , Jun Cheng , Han Zhou , Dong Ni

Obtaining per-beat information is a key task in the analysis of cardiac electrocardiograms (ECG), as many downstream diagnosis tasks are dependent on ECG-based measurements. Those measurements, however, are costly to produce, especially in…

Machine Learning · Computer Science 2022-06-14 Guillermo Jimenez-Perez , Juan Acosta , Alejandro Alcaine , Oscar Camara

Generating training examples for supervised tasks is a long sought after goal in AI. We study the problem of heart signal electrocardiogram (ECG) synthesis for improved heartbeat classification. ECG synthesis is challenging: the generation…

Signal Processing · Electrical Eng. & Systems 2020-06-30 Tomer Golany , Daniel Freedman , Kira Radinsky

Scenario-based probabilistic forecasts have become vital for decision-makers in handling intermittent renewable energies. This paper presents a recent promising deep learning generative approach called denoising diffusion probabilistic…

Machine Learning · Computer Science 2023-08-22 Esteban Hernandez Capel , Jonathan Dumas

Interpreting EEG signals linked to spoken language presents a complex challenge, given the data's intricate temporal and spatial attributes, as well as the various noise factors. Denoising diffusion probabilistic models (DDPMs), which have…

Computation and Language · Computer Science 2023-11-15 Soowon Kim , Seo-Hyun Lee , Young-Eun Lee , Ji-Won Lee , Ji-Ha Park , Seong-Whan Lee

Pulsative signals such as the electrocardiogram (ECG) are extensively collected as part of routine clinical care. However, noisy and poor-quality recordings are a major issue for signals collected using mobile health systems, decreasing the…

Machine Learning · Computer Science 2023-11-15 Alexander Jenkins , Zehua Chen , Fu Siong Ng , Danilo Mandic

The present study introduces an innovative approach to the synthesis of Electroencephalogram (EEG) signals by integrating diffusion models with reinforcement learning. This integration addresses key challenges associated with traditional…

Signal Processing · Electrical Eng. & Systems 2024-10-02 Yang An , Yuhao Tong , Weikai Wang , Steven W. Su

Denoising diffusion models, a class of generative models, have garnered immense interest lately in various deep-learning problems. A diffusion probabilistic model defines a forward diffusion stage where the input data is gradually perturbed…

Image and Video Processing · Electrical Eng. & Systems 2023-06-06 Amirhossein Kazerouni , Ehsan Khodapanah Aghdam , Moein Heidari , Reza Azad , Mohsen Fayyaz , Ilker Hacihaliloglu , Dorit Merhof

Early recognition of abnormal rhythms in ECG signals is crucial for monitoring and diagnosing patients' cardiac conditions, increasing the success rate of the treatment. Classifying abnormal rhythms into exact categories is very challenging…

Machine Learning · Computer Science 2019-12-18 Jing Zhang , Jing Tian , Yang Cao , Yuxiang Yang , Xiaobin Xu

Denoising Diffusion Probabilistic Models (DDPMs) have demonstrated significant achievements in various image and video generation tasks, including the domain of medical imaging. However, generating echocardiography videos based on semantic…

Image and Video Processing · Electrical Eng. & Systems 2023-10-12 Phi Nguyen Van , Duc Tran Minh , Hieu Pham Huy , Long Tran Quoc

Speech enhancement is a critical component of many user-oriented audio applications, yet current systems still suffer from distorted and unnatural outputs. While generative models have shown strong potential in speech synthesis, they are…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-11 Yen-Ju Lu , Zhong-Qiu Wang , Shinji Watanabe , Alexander Richard , Cheng Yu , Yu Tsao

Probabilistic regression models the entire predictive distribution of a response variable, offering richer insights than classical point estimates and directly allowing for uncertainty quantification. While diffusion-based generative models…

Machine Learning · Computer Science 2025-10-07 Carlo Kneissl , Christopher Bülte , Philipp Scholl , Gitta Kutyniok

We present CardiacGen, a Deep Learning framework for generating synthetic but physiologically plausible cardiac signals like ECG. Based on the physiology of cardiovascular system function, we propose a modular hierarchical generative model…

Machine Learning · Computer Science 2022-11-16 Tushar Agarwal , Emre Ertin

Accurately interpreting cardiac auscultation signals plays a crucial role in diagnosing and managing cardiovascular diseases. However, the paucity of labelled data inhibits classification models' training. Researchers have turned to…

Sound · Computer Science 2025-06-18 Leigh Abbott , Milan Marocchi , Matthew Fynn , Yue Rong , Sven Nordholm

Machine learning tasks involving biomedical signals frequently grapple with issues such as limited data availability, imbalanced datasets, labeling complexities, and the interference of measurement noise. These challenges often hinder the…

Signal Processing · Electrical Eng. & Systems 2024-01-30 Xiaomin Li , Mykhailo Sakevych , Gentry Atkinson , Vangelis Metsis

Reliable seizure detection from electroencephalography (EEG) time series is a high-priority clinical goal, yet the acquisition cost and scarcity of labeled EEG data limit the performance of machine learning methods. This challenge is…

Methodology · Statistics 2026-01-30 Nina Moutonnet , Joshua Corneck , Felipe Tobar , Danilo Mandic

Decoding EEG signals for imagined speech is a challenging task due to the high-dimensional nature of the data and low signal-to-noise ratio. In recent years, denoising diffusion probabilistic models (DDPMs) have emerged as promising…

Audio and Speech Processing · Electrical Eng. & Systems 2023-07-28 Soowon Kim , Young-Eun Lee , Seo-Hyun Lee , Seong-Whan Lee

Electrical waves in the heart form rotating spiral or scroll waves during life-threatening arrhythmias such as atrial or ventricular fibrillation. The wave dynamics are typically modeled using coupled partial differential equations, which…

Medical Physics · Physics 2024-10-07 Tanish Baranwal , Jan Lebert , Jan Christoph

Cardiovascular disease is a major life-threatening condition that is commonly monitored using electrocardiogram (ECG) signals. However, these signals are often contaminated by various types of noise at different intensities, significantly…

Signal Processing · Electrical Eng. & Systems 2024-07-17 Ding Zhu , Vishnu Kabir Chhabra , Mohammad Mahdi Khalili