GTestPolicy.h

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/***************************************************************************
 *   Copyright (C) 2005 by Christophe GONZALES and Pierre-Henri WUILLEMIN  *
 *   {prenom.nom}_at_lip6.fr                                               *
 *                                                                         *
 *   This program 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.                                   *
 *                                                                         *
 *   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 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.             *
 ***************************************************************************/
#ifndef GUM_MULTI_DIM_FUNCTION_GRAPH_G_TEST_POLICY_H
#define GUM_MULTI_DIM_FUNCTION_GRAPH_G_TEST_POLICY_H
// ============================================================================
#include <agrum/FMDP/learning/core/chiSquare.h>
#include <agrum/FMDP/learning/core/contingencyTable.h>
#include <agrum/FMDP/learning/core/testPolicy/ITestPolicy.h>
#include <agrum/FMDP/learning/core/tupleHashFunc.h>
// ============================================================================

namespace gum {

  //  template <typename GUM_SCALAR>
  //  using ConTab = ContingencyTable<Idx, GUM_SCALAR>;

  template < typename GUM_SCALAR >
  class GTestPolicy : public ITestPolicy< GUM_SCALAR > {
    public:
    // ############################################################################
    // ############################################################################

    // ============================================================================
    // ============================================================================
    GTestPolicy() : ITestPolicy< GUM_SCALAR >(), __conTab(), __GStat(0) {
      GUM_CONSTRUCTOR(GTestPolicy);
    }

    // ============================================================================
    // ============================================================================
    virtual ~GTestPolicy() { GUM_DESTRUCTOR(GTestPolicy); }

    // ============================================================================
    // ============================================================================
    void* operator new(size_t s) {
      return SmallObjectAllocator::instance().allocate(s);
    }

    void operator delete(void* p) {
      SmallObjectAllocator::instance().deallocate(p, sizeof(GTestPolicy));
    }


    // ############################################################################
    // ############################################################################

    // ============================================================================
    // ============================================================================
    void addObservation(Idx iattr, GUM_SCALAR ivalue);



    // ############################################################################
    // ############################################################################

    // ============================================================================
    // ============================================================================
    bool isTestRelevant() const {
      return (this->nbObservation() > 20
              && this->nbObservation() > __conTab.attrASize() * 5);
    }

    // ============================================================================
    // ============================================================================
    void computeScore() const;

    // ============================================================================
    // ============================================================================
    double score() const;

    // ============================================================================
    // ============================================================================
    double secondaryscore() const;




    // ############################################################################
    // ############################################################################

    // ============================================================================
    // ============================================================================
    void add(const GTestPolicy< GUM_SCALAR >& src);

    // ============================================================================
    // ============================================================================
    const ContingencyTable< Idx, GUM_SCALAR >& ct() const { return __conTab; }




    // ############################################################################
    // ############################################################################

    std::string toString() const {
      std::stringstream ss;
      ss << ITestPolicy< GUM_SCALAR >::toString()
         << "\t\t\tContingency Table : " << std::endl
         << __conTab.toString() << std::endl
         << "\t\t\tGStat : " << __GStat << std::endl
         << "\t\t\tGStat : " << this->secondaryscore() << std::endl;
      return ss.str();
    }


    private:
    ContingencyTable< Idx, GUM_SCALAR > __conTab;
    mutable double                      __GStat;
  };

}   // End of namespace gum

#include <agrum/FMDP/learning/core/testPolicy/GTestPolicy_tpl.h>

#endif /* GUM_MULTI_DIM_FUNCTION_GRAPH_G_TEST_POLICY_H */