各位大蝦，我在網(wǎng)上看到的教程里的一個程序段，本來想要試試看的： 1V%'.l9  
net=newff([-1 2; 0 5],[3,1],{'tansig','purelin'},'traingd'); .7Kk2Y  
net.trainParam.show = 50; =nVmthGw  
net.trainParam.lr = 0.05; HFS
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net.trainParam.epochs = 300; g-@h>$< 1  
net.trainParam.goal = 1e-5; o6|-=FcvC  
p = [-1 -1 2 2;0 5 0 5]; @2e2^8X7f  
t = [-1 -1 1 1]; &1Fply7(Ay  
net=train(net,p,t); 2P5_zND  
TRAINGD, Epoch 0/300, MSE 1.59423/1e-05, Gradient 2.76799/1e-10 hI~SAd ,#A  
TRAINGD, Epoch 50/300, MSE 0.00236382/1e-05, Gradient 0.0495292/1e-10 8QF`,o
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TRAINGD, Epoch 100/300, MSE 0.000435947/1e-05, Gradient 0.0161202/1e-10 >o[|"oLO  
TRAINGD, Epoch 150/300, MSE 8.68462e-05/1e-05, Gradient 0.00769588/1e-10 6^YJ]