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clf format compact nntwarn off P=-1:0.1:-0.5; T=[-0.9602 -0.5770 -0.0729 0.3771 0.6405 0.6600]; [R,Q] = size(P); [S2,Q]=size(T); S1=7; [W1, B1]=nwtan(S1,R); [W2, B2]=rands(S2,S1); disp_freq=100; max_epoch=20000; err_goal=1e-40; % zmniejszony błąd lr=0.01; error=[]; A1=tansig(W1*P,B1); % funkcja aktywacji warstwy pierwszej A2=purelin(W2*A1,B2); % funkcja aktywacji warstwy drugiej E=T-A2; SSE=sumsqr(E); for epoch=1:max_epoch if SSE < err_goal, epoch=epoch-1; break, end, D2=deltalin(A2,E); [dW2,dB2]=learnbp(A1,D2,lr); D1=deltatan(A1,D2,W2); [dW1,dB1]=learnbp(P,D1,lr); W1=W1+dW1; B1=B1+dB1; A1=tansig(W1*P,B1); W2=W2+dW2; B2=B2+dB2; A2=purelin(W2*A1,B2); E=T-A2; SSE=sumsqr(E); error=[error SSE]; if(rem(epoch,disp_freq)==0) epoch SSE plot(P,T,'r',P,A2,'g') pause(1e-10) end end error(length(error))
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