TextClassificationSerial/LabelFactory.cpp at master · mremad/TextClassificationSerial · GitHub

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//
// LabelFactory.cpp
// TextClassificationSerial
//
// Created by Mohamed Emad on 6/11/14.
// Copyright (c) 2014 Mohamed Emad. All rights reserved.
//

#include"LabelFactory.h"

LabelFactory::LabelFactory()
{

}

voidLabelFactory::initialize(int** feature_vectors,int total_number_documents,int desired_labeled_documents,int num_labels)
{
	labeled_fv = (int**)malloc(sizeof(int*)*desired_labeled_documents);
 unlabeled_fv = (int**)malloc(sizeof(int*)*(total_number_documents - desired_labeled_documents));
	processed_vectors=(int*)malloc(sizeof(int)*total_number_documents);
	label_frequency=(int*)malloc(sizeof(int)*desired_labeled_documents);
	label_index_in_FV=(int*)malloc(sizeof(int)*desired_labeled_documents);
for(int i=0;i<desired_labeled_documents;i++)
	{
 label_frequency[i]=0;
	}
for(int i=0;i<total_number_documents;i++)
	{
 processed_vectors[i]=0;
	}
this->feature_vectors=feature_vectors;
this->total_number_documents=total_number_documents;
this->desired_labeled_documents=desired_labeled_documents;
this->num_labels=num_labels;
/*for(int i=0;i<total_number_documents;i++)
	{
 printf("\nTotal FV={%i,%i,%i}",feature_vectors[i][0],feature_vectors[i][1],feature_vectors[i][2]);
	}
	for(int i=0;i<desired_labeled_documents;i++)
	{
 printf("\nLabeled FV={%i,%i,%i}",labeled_fv[i][0],labeled_fv[i][1],labeled_fv[i][2]);
	}
	for(int i=0;i<total_number_documents-desired_labeled_documents;i++)
	{
 printf("\nunLabeled FV={%i,%i,%i}",unlabeled_fv[i][0],unlabeled_fv[i][1],unlabeled_fv[i][2]);
	}*/
}

voidLabelFactory::select_labeled_docs(int** feature_vectors,int total_number_documents,int desired_labeled_documents,int num_labels)
{
printf("Began selecting labeled\n");
initialize(feature_vectors,total_number_documents,desired_labeled_documents,num_labels);
create_labeled_fv();
check_labeled_count();
create_unlabeled_fv();
printf("Ended selecting labeled\n");
}

voidLabelFactory::create_unlabeled_fv()
{
int index_in_unlabeled_fv=0;
for(int i=0;i<total_number_documents;i++)
	{
if(processed_vectors[i]==0)
 {
 unlabeled_fv[index_in_unlabeled_fv]=feature_vectors[i];
 processed_vectors[i]=1;
 index_in_unlabeled_fv++;
 }
	}
}

voidLabelFactory::create_labeled_fv()
{
int index_in_fv;
srand((unsignedint)time( 0 ));

for(int i=0;i<desired_labeled_documents;i++)
	{
do
 {
 index_in_fv=(rand() % total_number_documents);
 } while(processed_vectors[index_in_fv]==1);

 labeled_fv[i]=feature_vectors[index_in_fv];
 processed_vectors[index_in_fv]=1;
 label_index_in_FV[i]=index_in_fv;
 label_frequency[labeled_fv[i][0]]++;
	}

}

voidLabelFactory::check_labeled_count()
{
for(int i=0;i<num_labels;i++)
for(int j=0;j<desired_labeled_documents;j++)
 {
if(labeled_fv[j][0]==i)
 {
break;
 }
if(j==desired_labeled_documents-1)
 {
bool done=false;
printf("\nMissing label %i \n",i);
for(int k=0;k<total_number_documents;k++)
 {
if(feature_vectors[k][0]==i && processed_vectors[k]==0)
 {
 processed_vectors[k]=1;
for(int x=0;x<desired_labeled_documents;x++)
 {
if(label_frequency[x]>1)
 {
for(int y=0;y<desired_labeled_documents;y++)
 {
if(labeled_fv[y][0]==x)
 {
 labeled_fv[y]=feature_vectors[k];
 processed_vectors[label_index_in_FV[y]]=0;
 label_index_in_FV[y]=k;
 done=true;
break;
 }
 }
 }
if(done)
break;
 }
 }
if (done)
break;
 }
 }
 }

}