a.cpp

单层感知器人工神经网络

#include<iostream.h>
void main()
{
	double p[2][3]={{-0.4,-0.5,0.6},{0.9,0,0.1}};
    int t[3]={1,1,0};
	int y[3]={-1,-1,-1};
	int count=20;
	double w[2]={0.01,0.01};
	double b=0.01;
	int i=0;
	double e=0;
	for( i=0;i<count;i++)
	{
		int x=i%3;
		double v=b+p[0][x]*w[0]+p[1][x]*w[1];
		if(v>=0)
			y[x]=1;
		else y[x]=0;
		if((y[0]==t[0])&(y[1]==t[1])&(y[2]==t[2]))break;
		/*int n=0;
		for(int m=0;m<3;m++)
		{
			n=n+(t[m]-y[m])*(t[m]-y[m]);
		}
		e=n/3;
		if(e=0)
			break;*/
		else
		{
			w[0]=w[0]+(t[x]-y[x])*p[0][x];
			w[1]=w[1]+(t[x]-y[x])*p[1][x];
			b=b+(t[x]-y[x])*b;
		}
	}
	cout<<i<<endl;
	cout<<"y="<<endl;
	for(int j=0;j<3;j++)
		cout<<y[j]<<" ";
	cout<<endl;
	cout<<"e="<<e<<endl;
    //使用测试数据检测
	double q[2][3]={{0.6,0.9,-0.1},{-0.1,-0.5,0.5}};
    int y1[3]={0,0,0};
	double e1=0;
	for(int k=0;k<3;k++)
	{
		double v=b+q[0][k]*w[0]+q[1][k]*w[1];
		if(v>=0)
			y1[k]=1;
		else y1[k]=0;
	}
	cout<<"y1="<<endl;
	for( j=0;j<3;j++)
		cout<<y1[j]<<" ";
	cout<<endl;
	

}