gum::SimpleCPTGenerator< GUM_SCALAR > Class Template Reference

<agrum/BN/generator/simpleCPTGenerator.h> More...

#include <simpleCPTGenerator.h>

Inherits gum::ICPTGenerator< GUM_SCALAR >.

Public Member Functions
Constructors / Destructor
	SimpleCPTGenerator ()
	Default constructor. More...
	~SimpleCPTGenerator () override
	Destructor. More...
CPT generation methods
void	generateCPT (const Idx &varId, const Potential< GUM_SCALAR > &cpt) override
	Generates a CPT using floats. More...

Detailed Description

template<typename GUM_SCALAR>
class gum::SimpleCPTGenerator< GUM_SCALAR >

<agrum/BN/generator/simpleCPTGenerator.h>

Class for generating Conditional Probability Tables.

This class implements a CPTGenerator CPT generation algorithm.

Definition at line 46 of file simpleCPTGenerator.h.

Constructor & Destructor Documentation

SimpleCPTGenerator()

template<typename GUM_SCALAR >

INLINE gum::SimpleCPTGenerator< GUM_SCALAR >::SimpleCPTGenerator

(

)

Default constructor.

Definition at line 37 of file simpleCPTGenerator_tpl.h.

                                                              :
      ICPTGenerator< GUM_SCALAR >() {
    GUM_CONSTRUCTOR(SimpleCPTGenerator);
  }

~SimpleCPTGenerator()

template<typename GUM_SCALAR >

INLINE gum::SimpleCPTGenerator< GUM_SCALAR >::~SimpleCPTGenerator ( )

override

Destructor.

Definition at line 44 of file simpleCPTGenerator_tpl.h.

                                                               {
    GUM_DESTRUCTOR(SimpleCPTGenerator);
  }

Member Function Documentation

generateCPT()

template<typename GUM_SCALAR >

void gum::SimpleCPTGenerator< GUM_SCALAR >::generateCPT ( const Idx &  varId, const Potential< GUM_SCALAR > &  cpt  )

override

Generates a CPT using floats.

Parameters

varId	The variable id of the CPT owner.
cpt	A reference on the CPT to fill.

Definition at line 53 of file simpleCPTGenerator_tpl.h.

References gum::Instantiation::end(), gum::Instantiation::incNotVar(), gum::Instantiation::incVar(), gum::Potential< GUM_SCALAR >::random(), gum::MultiDimDecorator< GUM_SCALAR >::set(), gum::Instantiation::setFirstNotVar(), gum::Instantiation::setFirstVar(), gum::Instantiation::unsetEnd(), and gum::MultiDimDecorator< GUM_SCALAR >::variable().

Referenced by gum::BayesNet< double >::generateCPT().

                                                           {
    cpt.random();

    const auto&   var = cpt.variable(varId);
    Instantiation cptInst(cpt);

    for (cptInst.setFirstNotVar(var); !cptInst.end(); cptInst.incNotVar(var)) {
      GUM_SCALAR sum = (GUM_SCALAR)0;

      for (cptInst.setFirstVar(var); !cptInst.end(); cptInst.incVar(var)) {
        sum += cpt[cptInst];
      }

      for (cptInst.setFirstVar(var); !cptInst.end(); cptInst.incVar(var)) {
        cpt.set(cptInst, cpt[cptInst] / sum);
      }

      cptInst.unsetEnd();
    }
  }

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The documentation for this class was generated from the following files:

• agrum/BN/generator/simpleCPTGenerator.h
• agrum/BN/generator/simpleCPTGenerator_tpl.h