source: trunk/yat/statistics/tTest.cc @ 779

// $Id: tTest.cc 779 2007-03-05 18:58:30Z peter $

/*
  Copyright (C) The authors contributing to this file.

  This file is part of the yat library, http://lev.thep.lu.se/trac/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 "tTest.h"
#include "tScore.h"
//#include "Averager.h"
//#include "AveragerWeighted.h"
//#include "yat/classifier/DataLookupWeighted1D.h"
//#include "yat/classifier/Target.h"
//#include "yat/utility/vector.h"

#include <cassert>
#include <cmath>

namespace theplu {
namespace yat {
namespace statistics {  

  tTest::tTest(bool b) 
    : t_(0)
  {
  }

  double tTest::score(const classifier::Target& target, 
                      const utility::vector& value)
  {
    tScore score;
    t_ = score.score(target, value, &dof_);
    return t_;
  }


  double tTest::score(const classifier::Target& target, 
                      const classifier::DataLookupWeighted1D& value)
  {
    tScore score;
    t_ = score.score(target, value, &dof_);
    return t_;
  }


  double tTest::score(const classifier::Target& target, 
                      const utility::vector& value,
                      const utility::vector& weight)
  {
    tScore score;
    t_ = score.score(target, value, weight, &dof_);
    return t_;
  }

  double tTest::p_value(void) const
  {
    if (!dof_)
      return 1.0;
    return gsl_cdf_tdist_Q(t_, dof_);
  }

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