智能控制第二版刘金琨思考题与习题7-1

网络训练程序clearall;closeall;xite=0.50;alfa=0.05;w2=rands(6,1);w2_1=w2;w2_2=w2;w1=rands(2,6);w1_1=w1;w1_2=w1;dw1=0*w1;I=[0,0,0,0,0,0]';Iout=[0,0,0,0,0,0]';FI=[0,0,0,0,0,0]';k=0;E=1.0;NS=3;whileE=1e-020k=k+1;times(k)=k;fors=1:1:NSxs=[1,0;0,0;0,1];ys=[1,0,-1]';x=xs(s,:);forj=1:1:6I(j)=x*w1(:,j);Iout(j)=1/(1+exp(-I(j)));endy1=w2'*Iout;el=0;y=ys(s,:);el=el+0.5*(y(1)-y1(1))^2;es(s)=el;E=0;ifs==NSfors=1:1:NSE=E+es(s);endendey=y-y1;w2=w2_1+xite*Iout*ey+alfa*(w2_1-w2_2);forj=1:1:6S=1/(1+exp(-I(j)));FI(j)=S*(1-S);endfori=1:1:2forj=1:1:6dw1(i,j)=xite*FI(j)*x(i)*ey(1)*w2(j,1)endendw1=w1_1+dw1+alfa*(w1_1-w1_2);w1_2=w1_1;w1_1=w1;w2_2=w2_1;w2_1=w2;end%EndofforEk(k)=E;end%Endofwhilefigure(1);plot(times,Ek,'r');xlabel('k');ylabel('E');savewfilew1w2;网络测试程序clearall;loadwfilew1w2;%NSamplesx=[1,0.1;0.5,0.5;0.1,1];fori=1:1:3forj=1:1:6I(i,j)=x(i,:)*w1(:,j);Iout(i,j)=1/(1+exp(-I(i,j)));endendy=w2'*Iout';y=y'