STK_AAModelFactory.cpp

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/*--------------------------------------------------------------------*/
/*     Copyright (C) 2004  Serge Iovleff

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.

    This program 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser 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

    Contact : Serge.Iovleff@stkpp.org
*/

/*
 * Project:  stkpp::AAModels
 * Purpose:  Interface base class for AA models.
 * Author:   Serge Iovleff, serge.iovleff@stkpp.org
 *
 **/

#include "../include/STK_AAModelFactory.h"
#include "../../Reduct/include/STK_IReduct.h"

#include "../../STatistiK/include/STK_Stat_Transform.h"

#ifdef STK_VERBOSE
#include "../../Arrays/include/STK_Display2D.h"
#endif

namespace STK
{

// constructor
AAModelFactory::AAModelFactory( Matrix const* p_data)
                              : IAAModel(p_data)
                              , mean_()
                              , std_()
                              , isCentered_(false)
                              , isStandardized_(false)
{ }

// destructor
AAModelFactory::~AAModelFactory()
{ }



bool AAModelFactory::run(const Integer & dim)
{
  // set data to reductor
  p_reductor_->setData(p_workData_);
  // compute AAM
  if (!IAAModel::run(dim))
  {
    return false;
  }
  try
  {
    // check if data have been standardized or centered
    if (isStandardized_) Stat::destandardize(*p_reduced_, mean_, std_);
    else
      if (isCentered_)  Stat::decenter(*p_reduced_, mean_);
  }
  catch (std::exception error)
  {
    msg_error_ = error.what();
    return false;
  }
  return true;
}



bool AAModelFactory::run( Vector const& weights, const Integer & dim)
{
  // set data to reductor
  p_reductor_->setData(p_workData_);
  // compute AAM
  if (!IAAModel::run(weights, dim)) { return false;}
  try
  {
  // check if data have been standardized or centered
  if (isStandardized_) Stat::destandardize(*p_reduced_, mean_, std_);
  else
    if (isCentered_)  Stat::decenter(*p_reduced_, mean_);
  }
  catch (std::exception error)
  {
    msg_error_ = error.what();
    return false;
  }
  return true;
}

/* standardize the local data set */
void AAModelFactory::center()
{
  if (isCentered_)
  {
    Stat::decenter(*p_workData_, mean_);
    isCentered_ = false;
  }
  Stat::center(*p_workData_, mean_);
  isCentered_ = true;
}

/* standardize the local data set */
void AAModelFactory::standardize()
{
  if (isStandardized_)
  {
    Stat::destandardize(*p_workData_, mean_, std_);
    isStandardized_ = false;
  }
  Stat::standardize(*p_workData_, mean_, std_);
  isStandardized_ = true;
}

/* standardize the local data set */
void AAModelFactory::center(Vector const& weights)
{
  if (isCentered_)
  {
    Stat::decenter(*p_workData_, mean_);
    isCentered_ = false;
  }
  Stat::center(*p_workData_, weights, mean_);
  isCentered_ = true;
}

/* standardize the local data set */
void AAModelFactory::standardize(Vector const& weights)
{
  if (isStandardized_)
  {
    Stat::destandardize(*p_workData_, mean_, std_);
    isStandardized_ = false;
  }
  Stat::standardize(*p_workData_, weights, mean_, std_);
  isStandardized_ = true;
}

} // namespace STK