資源簡介
這個程序主要是利用遺傳算法優化BP神經網絡,以優化BP網絡的權值和閾值

代碼片段和文件信息
%讀取數據
data=xlsread(‘data.xls‘);
%訓練預測數據
data_train=data(1:113:);
data_test=data(118:123:);
input_train=data_train(:1:9)‘;
output_train=data_train(:10)‘;
input_test=data_test(:1:9)‘;
output_test=data_test(:10)‘;
%數據歸一化
[inputnmininputmaxinputoutputnminoutputmaxoutput]=premnmx(input_trainoutput_train);?%對p和t進行字標準化預處理?
net=newff(minmax(inputn)[101]{‘tansig‘‘purelin‘}‘trainlm‘);
net.trainParam.epochs=100;
net.trainParam.lr=0.1;
net.trainParam.goal=0.00001;
%net.trainParam.show=NaN
%網絡訓練
net=train(netinputnoutputn);
%數據歸一化
inputn_test?=?tramnmx(input_testmininputmaxinput);
an=sim(netinputn);
test_simu=postmnmx(anminoutputmaxoutput);
error=test_simu-output_train;
plot(error)
k=error./output_train
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????772??2009-08-31?23:41??BP.m
?????文件?????????420??2009-08-16?22:48??Code.m
?????文件????????1556??2009-08-31?23:41??Cross.m
?????文件???????46404??2009-09-18?14:23??data.mat
?????文件????????1158??2009-08-31?23:41??Decode.m
?????文件????????1049??2010-01-06?13:46??fun.m
?????文件????????4179??2010-05-26?00:38??Genetic.m
?????文件????????1602??2009-11-12?19:20??Mutation.m
?????文件?????????825??2010-05-26?00:10??Select.m
?????文件?????????291??2009-08-31?23:41??test.m
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