source: trunk/yat/regression/OneDimensionalWeighted.cc

// $Id: OneDimensionalWeighted.cc 4207 2022-08-26 04:36:28Z peter $

/*
  Copyright (C) 2007, 2008 Jari Häkkinen, Peter Johansson
  Copyright (C) 2012, 2022 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 <config.h>

#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