概述
【实例简介】近似熵、模糊熵和样本熵的MATLAB代码,可用于信号特征提取,比如轴承振动信号特征处理,脑电波信号等时间序列信号
【实例截图】
【核心代码】
function [apen] = approx_entropy_my(n,r,a)
%% Code for computing approximate entropy for a time series: Approximate
% Entropy is a measure of complexity. It quantifies the unpredictability of
% fluctuations in a time series
% To run this function- type: approx_entropy('window length','similarity measure','data set')
% i.e approx_entropy(5,0.5,a)
% window length= length of the window, which should be considered in each iteration
% similarity measure = measure of distance between the elements
% data set = data vector
% small values of apen (approx entropy)
最后
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