Results 71 to 80 of about 456,367 (154)

A Comprehensive Assessment of EEG Entropy Measures for Bipolar Disorder Diagnosis Using Machine Learning

IEEE Access
Bipolar disorder (BD) is a common psychiatric condition with varying severity, characterized by alternating episodes of mania or hypomania and depression, making accurate and timely diagnosis challenging.
Hamed Bagheri, Seyed Rabi Mahdavi, Nazila Eyvazzadeh, Ali Neshaseh-Riz, Masoumeh Sajadi Rad, Shahryar Sadeghi, Reza Gerami, Mohammadreza Azimi Aval   +7 more
doaj   +1 more source

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

Entropy (Basel), 2020
Li H, Huang J, Yang X, Luo J, Zhang L, Pang Y.   +5 more
europepmc   +1 more source

基于MWPE和DBO‑SVM的齿轮故障诊断

Zhendong Ceshi yu Zhenduan
针对齿轮故障领域识别率低和识别时间长的问题，基于多尺度加权排列熵（multiscale weighted permutation entropy，简称MWPE）、蜣螂算法（dung beetle optimizer，简称DBO）与支持向量机（support vector machine，简称SVM）的原理，提出基于MWPE和DBO结合SVM的故障识别方法。首先，由于MWPE的嵌入维数难以确定且对结果影响较大，通过MWPE熵值分析引入变异系数（coefficient of variation，简称CV ...
doaj   +1 more source

Improved Multivariate Multiscale Permutation Entropy for Two-Modality Signal Analysis: ECG and EEG

Accurate analysis of multimodal physiological signals is crucial for early abnormality detection. Although multivariate permutation entropy (mvPE) provides an efficient framework for multichannel complexity analysis, its neglect of inter-channel ...
Jiani Guo, Jie Xiang, Mengni Zhou, Runan Ding, Hui Shang, Yan Niu   +5 more
core   +1 more source

Permutation Entropy: New Ideas and Challenges

, 2017
Over recent years, some new variants of Permutation entropy have been introduced and applied to EEG analysis, including a conditional variant and variants using some additional metric information or being based on entropies that are different from the ...
Karsten Keller, Inga Stolz, Teresa Mangold, Jenna Werner   +3 more
core   +1 more source

A New Fuzzy Logic Classifier Based on Multiscale Permutation Entropy and Its Application in Bearing Fault Diagnosis. [PDF]

Entropy (Basel), 2019
Du W, Guo X, Wang Z, Wang J, Yu M, Li C, Wang G, Wang L, Guo H, Zhou J, Shao Y, Xue H, Yao X.   +12 more
europepmc   +1 more source

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

Entropy (Basel), 2018
Dang Z, Lv Y, Li Y, Yi C.
europepmc   +1 more source

Multiscale Permutation Entropy and Forbidden Patterns for Stock Market Volatility Analysis

Volatility forecasting is essential for risk management in financial markets. We present a multiscale framework combining permutation entropy and forbidden pattern analysis to detect nonlinear structures in high-frequency stock returns. By applying the method to S&P 500 and CSI 300 indices, we observed a 34% increase in detection sensitivity ...
James R. Whitmore, Olivia K. Bennett, Daniel P. Hughes, Charlotte L. Fraser, Thomas J. Middleton   +4 more
openaire   +1 more source

Load state identification of rock bolts based on energy and multiscale permutation entropy of ultrasonic signals. [PDF]

Sci Prog
Zhang H, Wang L, Zhang L, Mo D, Chen Z.
europepmc   +1 more source

Improved complete ensemble empirical mode decomposition with adaptive noise and composite multiscale permutation entropy for denoising blast vibration signal. [PDF]

Heliyon
Kang YZ, Yao YK, Dong RL, Jia YS, Xie QM, Wang JN.   +5 more
europepmc   +1 more source