source: trunk/yat/classifier/FeatureSelector.cc @ 1090

// $Id$

/*
  Copyright (C) 2006 Jari Häkkinen, Peter Johansson

  This file is part of the yat library, http://trac.thep.lu.se/yat

  The yat library 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.

  The yat library 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 this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  02111-1307, USA.
*/

#include "FeatureSelector.h"
#include "MatrixLookup.h"
#include "MatrixLookupWeighted.h"

#include <list>

namespace theplu {
namespace yat {
namespace classifier {


  FeatureSelector::FeatureSelector(size_t N, size_t first)
    : first_(first), N_(N)
  {
  }


  FeatureSelector::~FeatureSelector()
  {
    for (std::list<const MatrixLookup*>::iterator i=garbage_.begin(); 
         i!=garbage_.end(); ++i)
      delete *i;
    for (std::list<const MatrixLookupWeighted*>::iterator i=
           garbage_weighted_.begin(); i!=garbage_weighted_.end(); ++i)
      delete *i;
  }


  const std::vector<size_t> FeatureSelector::features(void) const
  {
    return features_;
  }


  const MatrixLookup& FeatureSelector::get(const MatrixLookup& matrix)
  {
    garbage_.push_back(new MatrixLookup(matrix,features_,true));
    return *garbage_.back();
  }


  const MatrixLookupWeighted& 
  FeatureSelector::get(const MatrixLookupWeighted& matrix)
  {
    garbage_weighted_.push_back(new MatrixLookupWeighted(matrix,features_,
                                                         true));
    return *garbage_weighted_.back();
  }

}}} // of namespace classifier, yat, and theplu