Results 1 to 10 of about 1,261 (252)

A Comparison of Multiscale Permutation Entropy Measures in On-Line Depth of Anesthesia Monitoring. [PDF]

open access: yesPLoS ONE, 2016
OBJECTIVE:Multiscale permutation entropy (MSPE) is becoming an interesting tool to explore neurophysiological mechanisms in recent years. In this study, six MSPE measures were proposed for on-line depth of anesthesia (DoA) monitoring to quantify the ...
Cui Su   +5 more
doaj   +6 more sources

Fault Diagnosis for Rolling Element Bearings Based on Feature Space Reconstruction and Multiscale Permutation Entropy [PDF]

open access: yesEntropy, 2019
Aimed at distinguishing different fault categories of severity of rolling bearings, a novel method based on feature space reconstruction and multiscale permutation entropy is proposed in the study.
Weibo Zhang, Jianzhong Zhou
doaj   +2 more sources

Multiscale Weighted Permutation Entropy Analysis of Schizophrenia Magnetoencephalograms [PDF]

open access: yesEntropy, 2022
Schizophrenia is a neuropsychiatric disease that affects the nonlinear dynamics of brain activity. The primary objective of this study was to explore the complexity of magnetoencephalograms (MEG) in patients with schizophrenia.
Dengxuan Bai   +3 more
doaj   +3 more sources

Composite Multiscale Transition Permutation Entropy-Based Fault Diagnosis of Bearings

open access: yesSensors, 2022
When considering the transition probability matrix of ordinal patterns, transition permutation entropy (TPE) can effectively extract fault features by quantifying the irregularity and complexity of signals.
Jing Guo   +4 more
doaj   +3 more sources

Multiscale permutation Rényi entropy and its application for EEG signals. [PDF]

open access: yesPLoS ONE, 2018
There is considerable interest in analyzing the complexity of electroencephalography (EEG) signals. However, some traditional complexity measure algorithms only quantify the complexities of signals, but cannot discriminate different signals very well. To
Yinghuang Yin, Kehui Sun, Shaobo He
doaj   +4 more sources

Multiscale Permutation Entropy Based Rolling Bearing Fault Diagnosis [PDF]

open access: yesShock and Vibration, 2014
A new rolling bearing fault diagnosis approach based on multiscale permutation entropy (MPE), Laplacian score (LS), and support vector machines (SVMs) is proposed in this paper.
Jinde Zheng, Junsheng Cheng, Yu Yang
doaj   +2 more sources

Fault Diagnosis for Rotating Machinery Using Multiscale Permutation Entropy and Convolutional Neural Networks. [PDF]

open access: yesEntropy (Basel), 2020
In view of the limitations of existing rotating machine fault diagnosis methods in single-scale signal analysis, a fault diagnosis method based on multi-scale permutation entropy (MPE) and multi-channel fusion convolutional neural networks (MCFCNN) is proposed.
Li H   +5 more
europepmc   +5 more sources

Optimized Dynamic Mode Decomposition via Non-Convex Regularization and Multiscale Permutation Entropy. [PDF]

open access: yesEntropy (Basel), 2018
Dynamic mode decomposition (DMD) is essentially a hybrid algorithm based on mode decomposition and singular value decomposition, and it inevitably inherits the drawbacks of these two algorithms, including the selection strategy of truncated rank order and wanted mode components.
Dang Z, Lv Y, Li Y, Yi C.
europepmc   +5 more sources

On the Statistical Properties of Multiscale Permutation Entropy: Characterization of the Estimator's Variance. [PDF]

open access: yesEntropy (Basel), 2019
Permutation Entropy (PE) and Multiscale Permutation Entropy (MPE) have been extensively used in the analysis of time series searching for regularities. Although PE has been explored and characterized, there is still a lack of theoretical background regarding MPE. Therefore, we expand the available MPE theory by developing an explicit expression for the
Dávalos A   +3 more
europepmc   +5 more sources

Improvement of Statistical Performance of Ordinal Multiscale Entropy Techniques Using Refined Composite Downsampling Permutation Entropy [PDF]

open access: yesEntropy, 2020
Multiscale Permutation Entropy (MPE) analysis is a powerful ordinal tool in the measurement of information content of time series. MPE refinements, such as Composite MPE (cMPE) and Refined Composite MPE (rcMPE), greatly increase the precision of the ...
Antonio Dávalos   +3 more
doaj   +3 more sources

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