bp神经网络建模.txt

自己编的遗传算法同BP神经网络结合的代码！并且在神经网络模型上进行多目标寻优

tic,
net=newff(minmax(p),[8,2],{'logsig','purelin'},'traingdx');
net.trainParam.epochs=10000;
net.trainParam.goal=0.01;
rand('state',0);net=init(net);
net=train(net,p,t);
ptest=[1.11803;1.11803;-1.11803];
ttest=[1.6550;1.1973]
y=sim(net,ptest);erro=norm(y-ttest).*norm(y-ttest)/2
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