STK_IMixtureComposer.h

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/*--------------------------------------------------------------------*/
/*     Copyright (C) 2004-2016  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 : S..._Dot_I..._At_stkpp_Dot_org (see copyright for ...)
*/
 
/*
 * Project:  stkpp::Clustering
 * created on: 16 oct. 2012
 * Author:   iovleff, S..._Dot_I..._At_stkpp_Dot_org (see copyright for ...)
 * Originally created by Parmeet Bhatia <b..._DOT_p..._AT_gmail_Dot_com>
 **/
 
#ifndef STK_IMIXTURECOMPOSER_H
#define STK_IMIXTURECOMPOSER_H
 
#include "STK_IMixtureStatModel.h"
 
namespace STK
{
 
class IMixtureComposer: public IMixtureStatModel
{
  protected:
    IMixtureComposer( int nbSample, int nbCluster);
    IMixtureComposer( IMixtureComposer const& model);
 
  public:
    virtual ~IMixtureComposer();
 
    inline Clust::modelState state() const { return state_;}
 
    inline void setState(Clust::modelState state) { state_ = state;}
 
    // pure virtual
    virtual IMixtureComposer* create() const = 0;
    virtual IMixtureComposer* clone() const = 0;
    virtual void randomInit() = 0;
    virtual void paramUpdateStep() = 0;
 
    // virtual with default implementation
    virtual int cStep();
    virtual int sStep();
    virtual Real eStep();
    virtual void mapStep();
    virtual void finalizeStep();
    virtual void pStep();
    virtual void initializeStep();
 
    // not virtual
    void randomClassInit();
    void randomFuzzyInit();
 
  protected:
    void sStep(int i);
    void cStep(int i);
    Real eStep(int i);
    void mapStep(int i);
 
    // virtual To be re-implemented if some labels or probabilities are known
    virtual void initializeMixtureParameters();
    virtual int randomTik();
    virtual int randomZi();
 
  private:
    Clust::modelState state_;
#ifndef _OPENMP
    CPointX lnComp_;
#endif
};
 
} // namespace STK
 
#endif /* STK_IMIXTURECOMPOSER_H */