class TMVA::CrossEntropy: public TMVA::SeparationBase


 Implementation of the CrossEntropy as separation criterion
             -p log (p) - (1-p)log(1-p);     p=purity

Function Members (Methods)

public:

virtual	~CrossEntropy()
static TClass*	Class()
TMVA::CrossEntropy	CrossEntropy()
TMVA::CrossEntropy	CrossEntropy(const TMVA::CrossEntropy& g)
const TString&	TMVA::SeparationBase::GetName()
Double_t	TMVA::SeparationBase::GetSeparationGain(const Double_t& nSelS, const Double_t& nSelB, const Double_t& nTotS, const Double_t& nTotB)
virtual Double_t	GetSeparationIndex(const Double_t& s, const Double_t& b)
virtual TClass*	IsA() const
TMVA::CrossEntropy&	operator=(const TMVA::CrossEntropy&)
virtual void	ShowMembers(TMemberInspector& insp, char* parent)
virtual void	Streamer(TBuffer& b)
void	StreamerNVirtual(TBuffer& b)

protected:

TString	TMVA::SeparationBase::fName	name of the concrete Separation Index impementation
Double_t	TMVA::SeparationBase::fPrecisionCut

  Cross Entropy defined as
  -p log (p) - (1-p)log(1-p);     p=purity = s/(s+b)

 default constructor

{ fName = "CE"; }

 copy constructor

{}

 destructor

{}