source: trunk/yat/regression/OneDimensionalWeighted.cc @ 1437

// $Id: OneDimensionalWeighted.cc 1437 2008-08-25 17:55:00Z peter $

/*
  Copyright (C) 2007 Jari Häkkinen, 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 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 "OneDimensionalWeighted.h"

namespace theplu {
namespace yat {
namespace regression {

  OneDimensionalWeighted::OneDimensionalWeighted(void)
    : chisq_(0)
  {
  }

  OneDimensionalWeighted::~OneDimensionalWeighted(void)
  {
  }


  double OneDimensionalWeighted::prediction_error2(const double x, 
                                                   const double w) const 
  { 
    return s2(w)+standard_error2(x);
  }


  double OneDimensionalWeighted::r2(void) const 
  { 
    return 1-chisq_/ap_.y_averager().sum_xx_centered();
  }

}}} // of namespaces regression, yat, and theplu