guiyi.m

具有反馈的BP神经网络Matlab实现

function [inputs,targets]=guiyi(a,b)
[samples,inum]=size(a);
for i=1:inum                         %找出最大最小值
    max(1,i)=a(1,i);
    min(1,i)=a(1,i);
end
for i=1:inum
    for j=1:samples
        if max(1,i)<a(j,i) 
           max(1,i)=a(j,i);
        end
        if min(1,i)>a(j,i)
           min(1,i)=a(j,i);
        end
    end
end
for i=1:inum                                 %inputs归一化(0,1)
    for j=1:samples
        a(j,i)=(a(j,i)-min(1,i))/(max(1,i)-min(1,i));
    end
end
mmax=b(1,1);     %找出最大最小值
mmin=b(1,1);  
for i=1:samples
    if mmax<b(i,1) 
       mmax=b(i,1);
    end
    if mmin>b(i,1)
       mmin=b(i,1);
    end
end
for i=1:samples                                 %targets归一化(0,1)
    b(i,1)=(b(i,1)-mmin)/(mmax-mmin);
end
inputs=a;
targets=b;