TMVA::CrossEntropy Class Reference

Implementation of the CrossEntropy as separation criterion.

-p log (p) - (1-p)log(1-p); p=purity

Definition at line 43 of file CrossEntropy.h.

Public Member Functions
	CrossEntropy ()
	CrossEntropy (const CrossEntropy &g)
virtual	~CrossEntropy ()
virtual Double_t	GetSeparationIndex (const Double_t s, const Double_t b)
	Cross Entropy defined as: More...
Public Member Functions inherited from TMVA::SeparationBase
	SeparationBase ()
	Constructor. More...
	SeparationBase (const SeparationBase &s)
	Copy constructor. More...
virtual	~SeparationBase ()
const TString &	GetName ()
virtual Double_t	GetSeparationGain (const Double_t nSelS, const Double_t nSelB, const Double_t nTotS, const Double_t nTotB)
	Separation Gain: the measure of how the quality of separation of the sample increases by splitting the sample e.g. More...

Additional Inherited Members
Protected Attributes inherited from TMVA::SeparationBase
TString	fName
Double_t	fPrecisionCut

#include <TMVA/CrossEntropy.h>

Inheritance diagram for TMVA::CrossEntropy:

Constructor & Destructor Documentation

CrossEntropy() [1/2]

TMVA::CrossEntropy::CrossEntropy ( )

inline

Definition at line 48 of file CrossEntropy.h.

CrossEntropy() [2/2]

TMVA::CrossEntropy::CrossEntropy ( const CrossEntropy &  g )

inline

Definition at line 51 of file CrossEntropy.h.

~CrossEntropy()

virtual TMVA::CrossEntropy::~CrossEntropy ( )

inlinevirtual

Definition at line 54 of file CrossEntropy.h.

Member Function Documentation

GetSeparationIndex()

Double_t TMVA::CrossEntropy::GetSeparationIndex ( const Double_t  s, const Double_t  b  )

virtual

Cross Entropy defined as:

-p log (p) - (1-p)log(1-p); p=purity = s/(s+b)

Implements TMVA::SeparationBase.

Definition at line 47 of file CrossEntropy.cxx.

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

• tmva/tmva/inc/TMVA/CrossEntropy.h
• tmva/tmva/src/CrossEntropy.cxx