神经网络.rar_DeltaSGD_appliedn3t_reachaci_简单神经网络

function [W1,W2] = BackPopXOR( W1, W2, X, D) %UNTITLED2 此处显示有关此函数的摘要 % 此处显示详细说明 alf = 0.9; N=4; for k=1:4 xx=X(k,:)'; dd=D(k,:); v1=W1*xx; y1=Sigmoid(v1); v2=W2*y1; y2=Sigmoid(v2); e2=dd-y2; delta2=y2.*(1-y2).*e2; dW2=delta2*alf*y1'; e1=W2'*delta2; delta1=y1.*(1-y1).*e1; dW1=delta1*alf*xx'; W2=W2+dW2; W1=W1+dW1; end end