Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- clear all
- nntwarn off
- format compact
- P=-1:.1:-.5;
- T=[-.9602 -.5770 -.0729 .3771 .6405 .6600 ];
- [R,Q] = size(P);
- S1 =13;
- S2 =13;
- [S3,Q] = size(T);
- [W1, B1]=nwtan(S1, R);
- [W2, B2]=rands(S2, S1);
- [W3, B3]=rands(S3, S2);
- disp_freq = 100;
- max_epoch = 25000;
- err_goal = 1e-20;
- lr=0.02;
- error=[];
- A1 = tansig(W1*P,B1);
- A2 = tansig(W2*A1,B2);
- A3 = purelin(W3*A2,B3);
- E = T-A3;
- SSE = sumsqr(E);
- for epoch=1:max_epoch
- if SSE<err_goal
- epoch=epoch-1;
- break;
- end
- D3 = deltalin(A3,E);
- D2 = deltatan(A2,D3, W3);
- D1 = deltatan(A1,D2, W2);
- [dW1,dB1] = learnbp(P,D1,lr);
- [dW2,dB2] = learnbp(A1,D2,lr);
- [dW3,dB3] = learnbp(A2,D3,lr);
- W1 = W1+dW1;
- B1 = B1+dB1;
- W2 = W2+dW2;
- B2 = B2+dB2;
- W3 = W3+dW3;
- B3 = B3+dB3;
- A1 = tansig(W1*P,B1);
- A2 = tansig(W2*A1,B2);
- A3 = purelin(W3*A2,B3);
- E = T-A3;
- SSE = sumsqr(E);
- error=[error SSE];
- if(rem(epoch,disp_freq)==0)
- epoch
- SSE
- plot(P,T,'r',P,A3,'g')
- pause(1e-5)
- end
- end
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement