literal.cpp

关联分类算法采用贪心算法发现高质量分类规则

// LITERAL.cpp: implementation of the LITERAL class.
//
//////////////////////////////////////////////////////////////////////

#include "StdAfx.h"
#include "DESCRIPTION.h"
#include "TUPLE.h"
#include "LITERAL.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

LITERAL::LITERAL()
{
	m_Var=-1;
}

LITERAL::~LITERAL()
{

}

void LITERAL::Set(int var,int val)
{
	m_Var=var;
	m_Value=val;
}

bool LITERAL::Satisfy(const TUPLE& tuple) const
{
	if(tuple.attr[m_Var]==m_Value) return true;
	else return false;
}

bool LITERAL::operator==(const LITERAL& lit) const
{
	return (m_Var==lit.m_Var&&m_Value==lit.m_Value);
}

void LITERAL::WriteTo(FILE* stream) const
{
	fprintf(stream,"%d=%d",m_Var,m_Value);
}

bool LITERAL::ReadFrom(FILE* stream)
{
	int value;
	if(fscanf(stream,"%d=%d",&m_Var,&value)==2)
	{
		m_Value=value;
		return true;
	}
	else return false;
}