資源簡介
排列熵、樣本熵、近似熵、模糊熵適用于信號處理,機械故障診斷,信號特征提取。可以直接調(diào)用函數(shù)。代碼有詳細注解。
代碼片段和文件信息
function?msen=MsEn(mrXnt)
%本函數(shù)計算時間序列的多尺度熵
%input
%??m:維數(shù)??一般取2
%??r:閾值?一般?。?.1~0.25)SD
%??Xn:時間序列
%??t:尺度因子?一般取2
%output
%??msen:計算所得的樣本熵值
%2013.6.9??趙冰心
M=fix(length(Xn)/t);
for?i=1:M
???????Yn(i)=?sum?(?Xn((((i-1)*t)+1)?:(i*t)?)?)/?t?;?
end
for?j=1:(length(Yn)-m+1)
????Ym(:j)=Yn(((j-1)+1):(j-1+m));
end
for?k=1:(length(Yn)-m)
????for?g=(k+1):(length(Yn)-m+1)
????????mm=abs(Ym(:k)-Ym(:g));
????????d(gk)=max(mm);
????end
end
Bm=0;
for?k=1:(length(Yn)-m)
????i=0;
????for?g=(k+1):(length(Yn)-m+1)
????????if?d(gk) ???????????i=i+1;?
???????????Bm(k)=i;
????????end
????end
end
Cmr=Bm/(M-m);
meanCmr=mean(Cmr);
for?j=1:(length(Yn)-m)
????Ym1(:j)=Yn(((j-1)+1):(j+m));
end
for?k=1:(length(Yn)-m-1)
????for?g=(k+1):(length(Yn)-m)
????????d1(gk)
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????1138??2020-05-06?19:11??多尺度熵\MsEn.m
?????文件???????1798??2016-06-22?17:08??多尺度熵\MultiscaleFuzzyEntropy.m
?????文件???????2493??2019-07-20?16:56??多尺度熵\MultiscalePermutationEntropy.m
?????文件???????1951??2016-07-05?12:00??多尺度熵\MultiscaleSampleEntropy.m
?????文件???????2478??2017-07-03?13:42??多尺度熵\MultiscaleWeightPermutationEntropy.m
?????文件???????1499??2019-07-22?18:44??熵\ApEntropy.m
?????文件???????1951??2019-09-02?10:45??熵\Fuzzy_Entropy.m
?????文件???????1131??2017-07-03?09:07??熵\PermutationEntropy.m
?????文件???????1678??2019-06-28?14:58??熵\SampEntropy.m
?????文件???????1110??2016-07-02?17:14??熵\SampleEntropy.m
?????文件????????705??2019-06-28?15:00??熵\SE.m
?????文件???????1166??2017-07-03?09:25??熵\WeightPermutationEntropy.m
?????文件???????2452??2019-09-02?09:34??層次熵\HierarchicalEntropy.m
?????文件???????2475??2020-05-06?18:54??層次熵\HierFE.m
?????文件???????2487??2016-06-22?18:16??層次熵\HierPE.m
?????文件???????2441??2016-06-22?17:01??層次熵\HierSE.m
?????目錄??????????0??2020-05-06?19:34??多尺度熵
?????目錄??????????0??2020-05-06?18:35??熵
?????目錄??????????0??2020-05-06?18:31??層次熵
-----------?---------??----------?-----??----
????????????????28953????????????????????19
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