C++ 神经网络 实现 AND 操作符

//dnn dense nero network sample for AND operation//2017/06/27#ifndef DNN_EXAMPLE#define DNN_EXAMPLE#include <stdio.h>float input[4][2] = {{0,0},{0,1},{1,0},{1,1}};float output[4][1] = {{0},{0},{0},{1}};float* weight;//one layer to construct netvoid load_weight(){weight = new float[2];weight[0] = 0.1;weight[1] = 0.2;}float threshhold(float x){if(x>=0.9)return 1.0;else return 0;}//floatvoid show(){printf("%f  %f\n",weight[0],weight[1]);for(int i = 0;i<4;i++){float sum = 0.0;sum = input[i][0]*weight[0]+input[i][1]*weight[1];float value = threshhold(sum);printf("%f %f\t %f\n",input[i][0],input[i][1],value);}//for}//voidvoid train(){for(int i = 0;i<4;i++){float error = 0.0;float sum = 0.0;sum = input[i][0]*weight[0]+input[i][1]*weight[1];float value = threshhold(sum);error = output[i][0] - value;weight[0] = weight[0] + error*0.01;weight[1] = weight[1] + error*0.01;}}void main(int argc, char **argv){load_weight();int iterations = 40;for(int i=0;i<iterations;i++)train();show();getchar();}#endif