AUC.h

#ifndef _theplu_yat_statistics_auc_ 
#define _theplu_yat_statistics_auc_ 

// $Id: AUC.h 2597 2011-10-30 03:44:57Z peter $

/*
  Copyright (C) 2004 Peter Johansson
  Copyright (C) 2005, 2006, 2007, 2008 Jari Häkkinen, Peter Johansson
  Copyright (C) 2011 Peter Johansson

  This file is part of the yat library, http://dev.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 3 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 yat. If not, see <http://www.gnu.org/licenses/>.
*/

#include "Score.h"
#include "yat/utility/stl_utility.h"

#include <utility>
#include <map>

namespace theplu {
namespace yat {
namespace classifier {
  class Target;
}
namespace utility {
  class VectorBase;
}
namespace statistics {  

  class AUC : public Score
  {
  
  public:
    AUC(bool absolute=true);

    double score(const classifier::Target& target, 
                 const utility::VectorBase& value) const; 
    
    double score(const classifier::Target& target, 
                 const classifier::DataLookupWeighted1D& value) const; 

    double score(const classifier::Target& target, 
                 const utility::VectorBase& value, 
                 const utility::VectorBase& weight) const; 

  private:
    friend class ROC;

    typedef std::multimap<double, std::pair<bool, double> > MultiMap;
    double score(const MultiMap&) const;
  };

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

#endif