how to calculate the error in Neural Network Back Propagation Network

Question

ajith 2013-7-18

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/82428-how-to-calculate-the-error-in-neural-network-back-propagation-network

sir,

My doubt regards how to make the minum error rate =0.001

net = newff(input,target,10,{'tansig' 'purelin'},'trainlm');
nsch.trainparam.show=3;
nsch.trainparam.lr=0.1;
nsch.trainparam.mc=0.9;
nsch.trainparam.epochs=100;
nsch.trainparam.goal=1e-30;
net = train(net,input,target);
res=sim(net,input);

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Answer 1

Greg Heath 2013-7-22

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/82428-how-to-calculate-the-error-in-neural-network-back-propagation-network#answer_92389

在 MATLAB Online 中打开

Use as many defaults as possible

 MSEgoal = 0.01*mean(var(target',1))
 MinGrad = MSEgoal/100
 net = newff(input,target);
 net.trainParam.goal     = MSEgoal;
 net.trainParam.min_grad = MinGrad;
 [ net tr output error ] = train(net, input, target);

For details, search ANSWERS using the search word msegoal

Hope this helps.

Greg

Thank you for formally accepting my answer

Greg