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BP_Algorithm.cpp in BP_Algorithm.rar

			
#include <stdio.h>
#include <stdlib.h>
#include <fstream.h>
#include <math.h>



#define input_Num 6
#define hidden_Num 4
#define output_Num 1
#define high 0.999
#define low 0.001


double f(double x)
{
	double d;
//	d=0.5*(1.0+tanh(x));
	d=1.0/(1.0+exp(-(x)));
	if(d>high)
		d=high;
	if(d<low)
		d=low;
	return d;
}
struct inputNeuro
{
	double input[6];
	double teacher[1];
}indata[64];
double output_IL[input_Num];
double output_HL[hidden_Num];
double output_OL[output_Num];
double input_HL[hidden_Num];
double input_OL[output_Num];
double weight_IH[input_Num][hidden_Num];
double weight_HO[hidden_Num][output_Num];
double var_weight_IH[input_Num][hidden_Num];
double var_weight_HO[hidden_Num][output_Num];

double error;
double errorlimit;
double error_HL[hidden_Num];
double error_OL[output_Num];
double yita;
double alpha;
double beta;
double threshold_HL[hidden_Num];
double threshold_OL[output_Num];

void main() 
{
	int i,j,k,loop;
	ofstream outError( "E:\\Downloads\\BP\\误差.txt", ios::out );
	void save();//函数声明

	/*网络初始化*/
	errorlimit=0.01;
	for(i=0;i<64;i++)
	{
		if(i<32)
			indata[i].input[5]=0;
		else
			indata[i].input[5]=1;
		if(i<16||(i<48&&i>31))
			indata[i].input[4]=0;
		else
			indata[i].input[4]=1;
		if(i<8||(i>15&&i<24)||(i<40&&i>31)||(i<56&&i>47))
			indata[i].input[3]=0;
		else
			indata[i].input[3]=1;
		if(i<4||(i<12&&i>7)||(i<20&&i>15)||(i<28&&i>23)||
			(i<36&&i>31)||(i<44&&i>39)||(i<52&&i>47)||(i<60&&i>55))
			indata[i].input[2]=0;
		else
			indata[i].input[2]=1;
		if(i<2||(i<6&&i>3)||(i<10&&i>7)||(i<14&&i>11)||
			(i<18&&i>15)||(i<22&&i>19)||(i<26&&i>23)||
			(i<30&&i>27)||(i<34&&i>31)||(i<38&&i>35)||(i<42&&i>39)||
			(i<46&&i>43)||(i<50&&i>47)||(i<54&&i>51)||(i<58&&i>55)||
			(i<62&&i>59))
			indata[i].input[1]=0;
		else
			indata[i].input[1]=1;
		if(!(i%2))
			indata[i].input[0]=0;
		else
			indata[i].input[0]=1;

		switch(i)
		{
			case 0:
			case 12:
			case 18:
			case 30:
			cas			

			...
			...
			... to be continued.

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