and.cpp

文件中包含多种模式识别常用的算法

#include<iostream.h>
#include<stdlib.h>
#include<math.h>

typedef struct sample
{
	float a;
	float b;
} SAMPLE;

void main()
{
	SAMPLE w={0.058,0.065};
	SAMPLE x[4]={{0,0},{0,1},{1,0},{1,1}};
	int T[4]={0,0,0,1};
	int y[4],e[4];
	float s[4];
	float th=0.05;
	float m=0.02;
	int i;
	int flag=0;

	while(1)
	{
		for(i=0;i<4;i++)
		{
			s[i]=w.a*x[i].a+w.b*x[i].b-th;
			if(s[i]>0) y[i]=1;
			else y[i]=0;
			e[i]=T[i]-y[i];
			w.a=w.a+m*e[i]*x[i].a;
			w.b=w.b+m*e[i]*x[i].b;
			if(e[i]==0) flag++;
		}
		if(flag==4) break;
		flag=0;
	}

	cout<<"w=("<<w.a<<","<<w.b<<")"<<endl;
}