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- clear
- format compact
- nntwarn off
- P=-1:.1:-.5;
- T=[-.9602 -.5770 -.0729 .3771 .6405 .6600];
- [R,Q]=size(P);
- [S1,Q]=size(T);
- [W1,B1]=nwtan(S1,R);
- disp_freq = 500;
- max_epoch = 150000;
- err_goal = 0.1;
- lr = 0.01;
- error = zeros(1,max_epoch);
- A1=tansig(W1*P,B1);
- E=T-A1;
- SSE=sumsqr(E);
- for epoch=1:max_epoch;
- if SSE < err_goal, epoch = epoch - 1; break, end,
- D1=deltatan(A1,E);
- [dW1,dB1] = learnbp(P,D1,lr);
- W1=W1 + dW1;
- B1 = B1 + dB1;
- A1=tansig(W1*P,B1);
- E=T-A1;
- SSE=sumsqr(E);
- error = [error SSE];
- if(rem(epoch,disp_freq) == 0)
- epoch
- SSE
- plot(P,T,'r',P,A1,'g')
- pause(exp(-10))
- end
- end
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