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The Grey Wolf Optimizer (GWO) is recognized as a novel meta-heuristic algorithm inspired by the social leadership hierarchy and hunting mechanism of grey wolves. It is well-known for its simple parameter setting, fast convergence speed, and…

神经与进化计算 · 计算机科学 2024-04-11 Jianhua Jiang , Ziying Zhao , Weihua Li , Keqin Li

Bayesian optimization (BO) is an effective paradigm for the optimization of expensive-to-sample systems. Standard BO learns the performance of a system $f(x)$ by using a Gaussian Process (GP) model; this treats the system as a black-box and…

机器学习 · 统计学 2025-01-03 Leonardo D. González , Victor M. Zavala

Nearly 30% of the people in the rural areas of Bangladesh are below the poverty level. Moreover, due to the unavailability of modernized healthcare-related technology, nursing and diagnosis facilities are limited for rural people.…

The rapid growth of digital data has heightened the demand for efficient lossless compression methods. However, existing algorithms exhibit trade-offs: some achieve high compression ratios, others excel in encoding or decoding speed, and…

信息论 · 计算机科学 2025-10-01 Md. Atiqur Rahman , MM Fazle Rabbi

Bayesian optimization (BO) has proven to be an effective paradigm for the global optimization of expensive-to-sample systems. One of the main advantages of BO is its use of Gaussian processes (GPs) to characterize model uncertainty which…

机器学习 · 统计学 2023-11-30 Leonardo D. González , Victor M. Zavala

The majority of machine learning methods and algorithms give high priority to prediction performance which may not always correspond to the priority of the users. In many cases, practitioners and researchers in different fields, going from…

ECG databases are usually highly imbalanced due to the abundance of Normal ECG and scarcity of abnormal cases. As such, deep learning classifiers trained on imbalanced datasets usually perform poorly, especially on minor classes. One…

信号处理 · 电气工程与系统科学 2022-11-21 Edmond Adib , Fatemeh Afghah , John J. Prevost

Previous text-based depression detection is commonly based on large user-generated data. Sparse scenarios like clinical conversations are less investigated. This work proposes a text-based multi-task BGRU network with pretrained word…

机器学习 · 计算机科学 2020-07-09 Heinrich Dinkel , Mengyue Wu , Kai Yu

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.…

Deep learning applied to electrocardiogram (ECG) data can be used to achieve personal authentication in biometric security applications, but it has not been widely used to diagnose cardiovascular disorders. We developed a deep learning…

机器学习 · 计算机科学 2020-12-02 Song-Kyoo Kim , Chan Yeob Yeun , Paul D. Yoo , Nai-Wei Lo , Ernesto Damiani

Objective. Wearable devices with embedded photoplethysmography (PPG) enable continuous non-invasive monitoring of cardiac activity, offering a promising strategy to reduce the global burden of cardiovascular diseases. However, monitoring…

信号处理 · 电气工程与系统科学 2025-08-15 Giulio Basso , Xi Long , Reinder Haakma , Rik Vullings

Considering the variability of amplitude and phase patterns in electrocardiogram (ECG) signals due to cardiac activity and individual differences, existing entropy-based studies have not fully utilized these two patterns and lack…

信号处理 · 电气工程与系统科学 2024-04-16 Shuaicong Hu , Yanan Wang , Jian Liu , Jingyu Lin , Shengmei Qin , Zhenning Nie , Zhifeng Yao , Wenjie Cai , Cuiwei Yang

According to the World Health Organization, around 36% of the annual deaths are associated with cardiovascular diseases and 90% of heart attacks are preventable. Electrocardiogram signal analysis in ambulatory electrocardiography, during an…

信号处理 · 电气工程与系统科学 2021-01-13 Francisco Perdigon Romero , David Castro Piñol , Carlos Román Vázquez Seisdedos

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…

机器学习 · 计算机科学 2022-06-14 Guillermo Jimenez-Perez , Juan Acosta , Alejandro Alcaine , Oscar Camara

An electrocardiogram (ECG) is a time-series signal that is represented by one-dimensional (1-D) data. Higher dimensional representation contains more information that is accessible for feature extraction. Hidden variables such as frequency…

机器学习 · 统计学 2019-04-12 K. S. Rajput , S. Wibowo , C. Hao , M. Majmudar

Head-based signals such as EEG, EMG, EOG, and ECG collected by wearable systems will play a pivotal role in clinical diagnosis, monitoring, and treatment of important brain disorder diseases. However, the real-time transmission of the…

This paper proposes a novel adaptive feature extraction algorithm for seismocardiographic (SCG) signals. The proposed algorithm divides the SCG signal into a number of bins, where the length of each bin is determined based on the signal…

信号处理 · 电气工程与系统科学 2019-02-04 Amirtaha Taebi , Brian E Solar , Hansen A Mansy

With the rapid development of Machine Learning technology applied in electroencephalography (EEG) signals, Brain-Computer Interface (BCI) has emerged as a novel and convenient human-computer interaction for smart home, intelligent medical…

机器学习 · 计算机科学 2020-06-16 Yongshuang Liu , Haiping Huang , Fu Xiao , Reza Malekian , Wenming Wang

The classification of electrocardiogram (ECG) signals, which takes much time and suffers from a high rate of misjudgment, is recognized as an extremely challenging task for cardiologists. The major difficulty of the ECG signals…

机器学习 · 计算机科学 2020-12-11 Haozhen Zhang , Wei Zhao , Shuang Liu

Electrocardiogram (ECG) analysis is crucial for diagnosing heart disease, but most self-supervised learning methods treat ECG as a generic time series, overlooking physiologic semantics and rhythm-level structure. Existing contrastive…

机器学习 · 计算机科学 2026-02-27 Xin Wang , Burcu Ozek , Aruna Mohan , Amirhossein Ravari , Or Zilbershot , Fatemeh Afghah