bp1.asv

一些MATLAB的程序,,其中有BP神经网络集成的程序,在数据处理时采用归一化函数

p=-1:0.1:1;
t=[-0.9602 -0.5770 -0.0729 0.3771 0.6405 0.6600 0.4609 0.1336 -0.2013 -0.4344 -0.5000 -0.3930 -0.1647 0.0988 0.3072 0.3960 0.3449 0.1816 -0.0312 -0.2189 -0.3201];
s=5;
net1=newff(minmax(p),[8 ,1],{'tansig','logsig'},'traingdx');
net1=init(net1);
net1.trainParam.epochs=2000;
net1.trainParam.goal=0.001;
net1=train(net1,p,t);
y1=sim(net1,p);
error=y1-t;
res1=norm(error);
figure
plot(p,t,'r+');
hold on
plot(p,y1,'.');
figure;
plot(1:21,y1-t);