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// Copyright (C) 2002 Ronan Collobert (collober@iro.umontreal.ca)
//
//
// This file is part of Torch. Release II.
// [The Ultimate Machine Learning Library]
//
// Torch is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Torch is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Torch; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include "DataSet.h"
namespace Torch {
DataSet::DataSet()
{
n_targets = 0;
targets = NULL;
n_inputs = 0;
inputs = NULL;
n_examples = 0;
n_real_examples = 0;
select_examples = false;
selected_examples = NULL;
subsets = NULL;
n_examples_subsets = NULL;
n_subsets = 0;
}
void DataSet::init()
{
Object::init();
n_examples = n_real_examples;
selected_examples = (int *)xalloc(sizeof(int)*n_examples);
for(int i = 0; i < n_examples; i++)
selected_examples[i] = i;
}
void DataSet::pushSubset(int *subset_, int n_examples_)
{
subsets = (int **)xrealloc(subsets, sizeof(int *)*(n_subsets+1));
n_examples_subsets = (int *)xrealloc(n_examples_subsets, sizeof(int)*(n_subsets+1));
subsets[n_subsets] = subset_;
n_examples_subsets[n_subsets] = n_examples_;
n_subsets++;
selected_examples = (int *)xrealloc(selected_examples, sizeof(int)*n_examples_);
for(int t = 0; t < n_examples_; t++)
{
int index = subset_[t];
for(int s = n_subsets-2; s >= 0; s--)
index = subsets[s][index];
selected_examples[t] = index;
}
select_examples = true;
n_examples = n_examples_;
}
void DataSet::popSubset()
{
//Rq: xrealloc renvoie NULL si freed
subsets = (int **)xrealloc(subsets, sizeof(int *)*(n_subsets-1));
n_examples_subsets = (int *)xrealloc(n_examples_subsets, sizeof(int)*(n_subsets-1));
n_subsets--;
if(n_subsets == 0)
{
select_examples = false;
n_examples = n_real_examples;
selected_examples = (int *)xrealloc(selected_examples, sizeof(int)*n_examples);
for(int i = 0; i < n_examples; i++)
selected_examples[i] = i;
}
else
{
int n_examples_ = n_examples_subsets[n_subsets-1];
int *subset_ = subsets[n_subsets-1];
selected_examples = (int *)xrealloc(selected_examples, sizeof(int)*n_examples_);
for(int t = 0; t < n_examples_; t++)
{
int index = subset_[t];
for(int s = n_subsets-2; s >= 0; s--)
index = subsets[s][index];
selected_examples[t] = index;
}
n_examples = n_examples_;
}
}
void DataSet::setExample(int t)
{
if(select_examples)
setRealExample(selected_examples[t]);
else
setRealExample(t);
}
//=== Definitions juste la si ca vous gonfle
//=== de ne pas les definir
void DataSet::reset()
{
}
DataSet::~DataSet()
{
free(subsets);
free(n_examples_subsets);
free(selected_examples);
}
}
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