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It is a difficult task to classify images with multiple class labels using only a small number of labeled examples, especially when the label (class) distribution is imbalanced. Emotion classification is such an example of imbalanced label…

Computer Vision and Pattern Recognition · Computer Science 2017-12-15 Xinyue Zhu , Yifan Liu , Zengchang Qin , Jiahong Li

In recent years, deep learning has been successfully adopted in a wide range of applications related to electronic health records (EHRs) such as representation learning and clinical event prediction. However, due to privacy constraints,…

Machine Learning · Computer Science 2023-09-04 Chang Lu , Chandan K. Reddy , Ping Wang , Dong Nie , Yue Ning

Pathological gait analysis is constrained by limited and variable clinical datasets, which restrict the modeling of diverse gait impairments. To address this challenge, we propose a Pathological Gait-conditioned Generative Adversarial…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Mritula Chandrasekaran , Sanket Kachole , Jarek Francik , Dimitrios Makris

Class imbalance can often degrade predictive performance of supervised learning algorithms. Balanced classes can be obtained by oversampling exact copies, with noise, or interpolation between nearest neighbours (as in traditional SMOTE…

Machine Learning · Computer Science 2022-01-17 Emily Muller , Xu Zheng , Jer Hayes

Electrocardiogram (ECG) is the most frequent and routine diagnostic tool used for monitoring heart electrical signals and evaluating its functionality. The human heart can suffer from a variety of diseases, including cardiac arrhythmias.…

Signal Processing · Electrical Eng. & Systems 2022-09-05 Negin Alamatsaz , Leyla s Tabatabaei , Mohammadreza Yazdchi , Hamidreza Payan , Nima Alamatsaz , Fahimeh Nasimi

In the sea-land clutter classification of sky-wave over-the-horizon-radar (OTHR), the imbalanced and scarce data leads to a poor performance of the deep learning-based classification model. To solve this problem, this paper proposes an…

Systems and Control · Electrical Eng. & Systems 2023-07-19 Xiaoxuan Zhang , Zengfu Wang , Kun Lu , Quan Pan

Beat-level Electrocardiography (ECG) arrhythmia detection aims to assign an arrhythmia class to each beat in a recording, yet many existing systems treat beats as isolated local instances. This is limiting because beat labels often depend…

Machine Learning · Computer Science 2026-05-19 Jiahui Li , Ruili Fang , Zishuai Liu , WenZhan Song , Jin Lu , Fei Dou

Generative Adversarial Networks (GAN) are known to produce synthetic data that are difficult to discern from real ones by humans. In this paper we present an approach to use GAN to produce realistically looking ECG signals. We utilize them…

Machine Learning · Computer Science 2020-09-08 Karol Antczak

Since the introduction of deep learning, researchers have proposed content generation systems using deep learning and proved that they are competent to generate convincing content and artistic output, including music. However, one can argue…

Sound · Computer Science 2020-11-30 Nao Tokui

Cardiologists use electrocardiograms (ECG) for the detection of arrhythmias. However, continuous monitoring of ECG signals to detect cardiac abnormal-ities requires significant time and human resources. As a result, several deep learning…

Signal Processing · Electrical Eng. & Systems 2024-04-25 JuneYoung Park , Da Young Kim , Yunsoo Kim , Jisu Yoo , Tae Joon Kim

Cardiac arrhythmias are a leading cause of life-threatening cardiac events, highlighting the urgent need for accurate and timely detection. Electrocardiography (ECG) remains the clinical gold standard for arrhythmia diagnosis; however,…

Machine Learning · Computer Science 2025-05-09 Zuraiz Baig , Sidra Nasir , Rizwan Ahmed Khan , Muhammad Zeeshan Ul Haque

A common problem in computer vision -- particularly in medical applications -- is a lack of sufficiently diverse, large sets of training data. These datasets often suffer from severe class imbalance. As a result, networks often overfit and…

Image and Video Processing · Electrical Eng. & Systems 2021-07-08 Shobhita Sundaram , Neha Hulkund

Cardiovascular diseases are a pervasive global health concern, contributing significantly to morbidity and mortality rates worldwide. Among these conditions, arrhythmia, characterized by irregular heart rhythms, presents formidable…

Signal Processing · Electrical Eng. & Systems 2024-04-25 Bhavith Chandra Challagundla

Deep neural networks have played an important role in automatic sleep stage classification because of their strong representation and in-model feature transformation abilities. However, class imbalance and individual heterogeneity which…

Signal Processing · Electrical Eng. & Systems 2023-07-12 Xuewei Cheng , Ke Huang , Yi Zou , Shujie Ma

Generative Adversarial Networks (GANs) have shown remarkable success as a framework for training models to produce realistic-looking data. In this work, we propose a Recurrent GAN (RGAN) and Recurrent Conditional GAN (RCGAN) to produce…

Machine Learning · Statistics 2017-12-05 Cristóbal Esteban , Stephanie L. Hyland , Gunnar Rätsch

The tabular form constitutes the standard way of representing data in relational database systems and spreadsheets. But, similarly to other forms, tabular data suffers from class imbalance, a problem that causes serious performance…

Machine Learning · Computer Science 2025-08-04 Leonidas Akritidis , Panayiotis Bozanis

A substantial amount of variability in ECG manifested due to patient characteristics hinders the adoption of automated analysis algorithms in clinical practice. None of the ECG annotators developed till date consider the characteristics of…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Shreya Srivastava , Durgesh Kumar , Jatin Bedi , Sandeep Seth , Deepak Sharma

The classification of the electrocardiogram (ECG) signal has a vital impact on identifying heart-related diseases. This can ensure the premature finding of heart disease and the proper selection of the patient's customized treatment.…

Conditional Generative Adversarial Networks (cGANs) have been used in many image processing tasks. However, they still have serious problems maintaining the balance between conditioning the output on the input and creating the output with…

Computer Vision and Pattern Recognition · Computer Science 2021-09-14 Mohammadreza Naderi , Zahra Nabizadeh , Nader Karimi , Shahram Shirani , Shadrokh Samavi

Generative adversarial nets (GANs) have been remarkably successful at learning to sample from distributions specified by a given dataset, particularly if the given dataset is reasonably large compared to its dimensionality. However, given…

Machine Learning · Computer Science 2022-11-29 Tiantian Fang , Ruoyu Sun , Alex Schwing