Results 21 to 30 of about 2,043,515 (147)

Quantifying sediment complexity and its implications in the Yanhe watershed using refined composite multiscale fuzzy entropy

open access: yes, 2023
Abstract The Yanhe watershed, located in the Loess Plateau of China, is a representative loess hilly-gully and ecologically fragile region, posing a critical challenge for sustainable sediment management. Regarding the watershed as a vibrant complex system, this study investigated sediment concentration dynamics in the Yanhe watershed from the ...
Xintong Liu, Hongrui Zhao
openaire   +1 more source

Separation of magnetotelluric signals based on refined composite multiscale dispersion entropy and orthogonal matching pursuit

open access: yesEarth, Planets and Space, 2021
Magnetotelluric (MT) data processing can increase the reliability of measured data. Traditional MT data denoising methods are usually applied to entire MT time-series, which results in the loss of useful MT signals and a decrease of imaging accuracy of ...
Xian Zhang   +5 more
doaj   +1 more source

Multivariate refined composite multiscale entropy analysis [PDF]

open access: yes, 2016
Multiscale entropy (MSE) has become a prevailing method to quantify signals complexity. MSE relies on sample entropy. However, MSE may yield imprecise complexity estimation at large scales, because sample entropy does not give precise estimation of ...
A. Humeau-Heurtier   +1 more
core   +1 more source

Refined Composite Multiscale Dispersion Entropy and its Application to Biomedical Signals [PDF]

open access: yes, 2017
Objective: We propose a novel complexity measure to overcome the deficiencies of the widespread and powerful multiscale entropy (MSE), including, MSE values may be undefined for short signals, and MSE is slow for real-time applications.Methods: We ...
Abasolo, Daniel Emilio   +7 more
core   +3 more sources

Matlab codes for "Refined Composite Multivariate Generalized Multiscale Fuzzy Entropy: A Tool for Complexity Analysis of Multichannel Signals"

open access: yes, 2016
Multiscale entropy (MSE) is an appealing tool to characterize the complexity of time series over multiple temporal scales. Recent developments in the field have tried to extend the MSE technique in different ways. Building on these trends, we propose the
Azami, Hamed, Escudero, Javier
core   +2 more sources

An Improved Refined Composite Multivariate Multiscale Fuzzy Entropy Method for MI-EEG Feature Extraction

open access: yesComputational Intelligence and Neuroscience, 2019
Feature extraction of motor imagery electroencephalogram (MI-EEG) has shown good application prospects in the field of medical health. Also, multivariate entropy-based feature extraction methods have been gradually applied to analyze complex multichannel biomedical signals, such as EEG and electromyography.
Mingai Li   +3 more
openaire   +2 more sources

Fault line selection method for coal mine power grid based on RCMDE and KFCM

open access: yesGong-kuang zidonghua, 2022
It is difficult to accurately select the fault line when the single-phase ground fault occurs in the coal mine power grid with the widely used resonant grounding system.
HAN Guoguo   +4 more
doaj   +1 more source

Analyzing the Dynamics of Lung Cancer Imaging Data Using Refined Fuzzy Entropy Methods by Extracting Different Features

open access: yesIEEE Access, 2019
Lung cancer is the major cause of cancer-related deaths worldwide with poor survival due to the poor diagnostic system at the advanced cancer stage. In the past, researchers developed computer-aided diagnosis (CAD) systems, which were greatly used by the
Lal Hussain   +5 more
doaj   +1 more source

Multiscale Fluctuation-Based Dispersion Entropy and Its Applications to Neurological Diseases

open access: yesIEEE Access, 2019
Fluctuation-based dispersion entropy (FDispEn) is a new approach to estimate the dynamical variability of the fluctuations of signals. It is based on Shannon entropy and fluctuation-based dispersion patterns.
Hamed Azami   +6 more
doaj   +1 more source

Use of Composite Multivariate Multiscale Permutation Fuzzy Entropy to Diagnose the Faults of Rolling Bearing

open access: yes, 2023
The study focuses on the fault signals of rolling bearings, which are characterized by nonlinearity, periodic impact, and low signal-to-noise ratio.
Hong Liu   +5 more
core   +1 more source

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