PDistributionVariable.h

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// -*- C++ -*-

// PLearn (A C++ Machine Learning Library)
// Copyright (C) 1998 Pascal Vincent
// Copyright (C) 1999-2002 Pascal Vincent, Yoshua Bengio, Rejean Ducharme and University of Montreal
// Copyright (C) 2001-2002 Nicolas Chapados, Ichiro Takeuchi, Jean-Sebastien Senecal
// Copyright (C) 2002 Xiangdong Wang, Christian Dorion

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/* *******************************************************      
   * $Id: PDistributionVariable.h,v 1.1 2004/08/17 15:37:05 larocheh Exp $
   * This file is part of the PLearn library.
   ******************************************************* */

#ifndef PDistributionVariable_INC
#define PDistributionVariable_INC

#include "UnaryVariable.h"
#include <plearn_learners/distributions/PDistribution.h>

namespace PLearn {
using namespace std;


class PDistributionVariable: public UnaryVariable
{
public:
  typedef UnaryVariable inherited;
  PP<PDistribution> dist;

private:
  void build_();

protected:
  static void declareOptions(OptionList & ol);

public:
  PDistributionVariable() {}
  PDistributionVariable(Variable* no_noise_var, PP<PDistribution> this_dist);

  PLEARN_DECLARE_OBJECT(PDistributionVariable);

  virtual void build();
  virtual void makeDeepCopyFromShallowCopy(map<const void*, void*>& copies);
  
  virtual void recomputeSize(int& l, int& w) const;  
  virtual void fprop();
  virtual void bprop();
  virtual void bbprop();
  virtual void symbolicBprop();
  virtual void rfprop();
};

DECLARE_OBJECT_PTR(PDistributionVariable);

} // end of namespace PLearn

#endif 

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