資源簡介
核主元分析(Kernel principal component analysis ,KPCA)是一種非線性數據處理方法。
該代碼的主要功能為:
1. 利用KPCA實現數據降維(特征提取)
2. 利用KPCA實現故障檢測
3. 利用KPCA實現故障診斷
4. 提供動態KPCA(DKPCA)擴展
代碼片段和文件信息
%?Demo1:?Dimensionality?reduction?or?feature?extraction?using?KPCA
%?X:?training?samples
%
%%%%%%%%%%%%%%%%%%%%%%%%%%?????KPCA???????%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%?Improve?the?performance?by?adjusting?the?following?parameters:
%?1.?sigma??%?kernel?width
%?2.?dims???%?Dimensionality
%?---------------------------------------------------------------------%
clc
clear?all
close?all
addpath(genpath(pwd))
%?4?circles
load?circledata
X?=?circledata;
figure
for?i?=?1:4
????scatter(X(1+250*(i-1):250*i1)X(1+250*(i-1):250*i2))
????hold?on
end
%?Train?KPCA?model
model?=?kpca_train(X‘type‘0‘sigma‘5‘dims‘2);
%?Visualize?the?result?of?dimensionality?reduction
figure
for?i?=?1:4
????scatter(model.mappedX(1+250*(i-1):250*i1)?...?
????????model.mappedX(1+250*(i
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-10-16?13:05??data\
?????文件???????15737??2018-11-09?12:55??data\circledata.mat
?????文件??????153319??2019-04-10?16:30??data\test.mat
?????文件???????81003??2019-04-10?16:30??data\train.mat
?????文件?????????833??2019-04-18?23:13??demo1.m
?????文件?????????818??2019-04-18?23:13??demo2.m
?????文件????????1019??2019-04-18?23:22??demo3.m
?????文件????????1051??2019-04-18?23:17??demo4.m
?????目錄???????????0??2019-10-16?13:05??func\
?????文件????????2423??2019-04-18?23:14??func\computeCPs.m
?????文件?????????486??2019-04-18?23:14??func\computeKM.m
?????文件????????1064??2019-04-18?23:14??func\comtupeLimit.m
?????文件?????????749??2019-04-18?23:25??func\constructAM.m
?????文件????????2550??2019-04-18?23:14??func\CPsKPCA.m
?????文件????????1415??2019-04-18?23:15??func\kpca_test.m
?????文件????????3601??2019-04-18?23:21??func\kpca_train.m
?????文件????????1079??2019-04-18?23:15??func\normalize.m
?????文件?????????879??2019-04-18?23:15??func\plotCPs.m
?????文件????????1019??2019-04-18?23:15??func\plotResult.m
?????目錄???????????0??2019-10-16?13:05??refs\
?????文件??????125900??2019-04-11?15:44??refs\Deng_Tian_2011_A?new?fault?isolation?method?ba
?????文件??????430466??2018-11-07?13:53??refs\Lee?et?al_2004_Nonlinear?process?monitoring?using?kernel?principal?component?analysis.pdf
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