description.cpp

关联分类算法采用贪心算法发现高质量分类规则

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

#include "StdAfx.h"
#include "memory.h"
#include "stdio.h"
#include "DESCRIPTION.h"

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

DESCRIPTION::DESCRIPTION()
{
	num_attr=0;
	num_values=0;
	type=0;
	num_classes=0;
}

DESCRIPTION::DESCRIPTION(const DESCRIPTION& descript)
{
	num_attr=descript.num_attr;
	num_classes=descript.num_classes;
	num_values=new int[num_attr];
	type=new int[num_attr];
	memcpy(type,descript.type,sizeof(int)*num_attr);
	memcpy(num_values,descript.num_values,sizeof(int)*num_attr);
}

DESCRIPTION::~DESCRIPTION()
{
	if(num_values) delete num_values;
	if(type) delete type;
}

void DESCRIPTION::operator =(const DESCRIPTION& descript)
{
	if(num_values) delete num_values;
	if(type) delete type;
	num_attr=descript.num_attr;
	num_classes=descript.num_classes;
	num_values=new int[num_attr];
	type=new int[num_attr];
	memcpy(type,descript.type,sizeof(int)*num_attr);
	memcpy(num_values,descript.num_values,sizeof(int)*num_attr);
}

void DESCRIPTION::SetNumAttr(int n)
{
	num_attr=n;
	num_values=new int[n];
	type=new int[n];
	for(int i=0;i<n;i++)
	{
		num_values[i]=0;
		type[i]=1;
	}
}

int	DESCRIPTION::GetNumAttr() const
{
	return num_attr;
}
	
void DESCRIPTION::SetType(int i,int t)
{
	type[i]=t;
}

int	DESCRIPTION::GetType(int i) const
{
	return type[i];
}

void DESCRIPTION::SetNumValues(int i,int n)
{
	num_values[i]=n;
}

int	DESCRIPTION::GetNumValues(int i) const
{
	return num_values[i];
}

void DESCRIPTION::SetNumClasses(int n)
{
	num_classes=n;
}

int	DESCRIPTION::GetNumClasses() const
{
	return num_classes;
}

void DESCRIPTION::WriteTo(FILE* stream) const
{
	fprintf(stream,"%d ",num_classes);
	for(int i=0;i<num_classes;i++)
	{
		fprintf(stream,"0 ");
	}

	fprintf(stream,"\n");
	fprintf(stream,"%d\n",num_attr);

	for(int i=0;i<num_attr;i++)
	{
		fprintf(stream,"%d %d\n",type[i],num_values[i]);
	}
}

bool DESCRIPTION::ReadFrom(FILE* stream)
{
	int nAttr=0,temp;

	if(fscanf(stream,"%d ",&num_classes)!=1) return false;
	for(int i=0;i<num_classes;i++)
	{
		if(fscanf(stream,"%d ",&temp)!=1) return false;
	}
	fscanf(stream,"\n");

	if(fscanf(stream,"%d\n",&nAttr)!=1) return false;
	SetNumAttr(nAttr);

	for(int i=0;i<num_attr;i++)
	{
		if(fscanf(stream,"%d %d\n",&(type[i]),&(num_values[i]))!=2)
			return false;
	}

	return true;
}