statisticalLazyDecider.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_STATISTICAL_LAZY_DECIDER_H
#define GUM_STATISTICAL_LAZY_DECIDER_H
// =========================================================================
#include <agrum/FMDP/decision/lazyDecider.h>
#include <agrum/FMDP/simulation/statesCounter.h>
// =========================================================================

namespace gum {

  class StatisticalLazyDecider : public IDecisionStrategy {
    // ###################################################################
    // ###################################################################
    public:
    // ==========================================================================
    // ==========================================================================
    StatisticalLazyDecider() : __counter(), __initialized(false) {
      GUM_CONSTRUCTOR(StatisticalLazyDecider);
    }

    // ==========================================================================
    // ==========================================================================
    ~StatisticalLazyDecider() { GUM_DESTRUCTOR(StatisticalLazyDecider); }



    // ###################################################################
    // ###################################################################
    public:
    void checkState(const Instantiation& newState, Idx actionId = 0) {
      if (!__initialized) {
        __counter.reset(newState);
        __initialized = true;
      } else
        __counter.incState(newState);
    }

    private:
    StatesCounter __counter;
    bool          __initialized;
  };
}   // namespace gum
#endif   // GUM_STATISTICAL_LAZY_DECIDER_H