library: libTMVA
#include "CrossEntropy.h"

TMVA::CrossEntropy

class description - header file - source file - inheritance tree (.pdf)

class TMVA::CrossEntropy : public TMVA::SeparationBase

Inheritance Chart:
TMVA::SeparationBase
<-
TMVA::CrossEntropy
 

    protected:

      virtual Double_t GetSeparationIndex(const Double_t& s, const Double_t& b)

    public:

                          CrossEntropy()
                          CrossEntropy(const TMVA::CrossEntropy&)
                  virtual ~CrossEntropy()
           static TClass* Class()
          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)

Data Members






Class Description


_______________________________________________________________________

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



Double_t GetSeparationIndex( const Double_t &s, const Double_t &b )


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



 CrossEntropy()




virtual ~CrossEntropy()







Author: Andreas Hoecker, Joerg Stelzer, Helge Voss, Kai Voss

Last update: root/tmva $Id: CrossEntropy.cxx,v 1.3 2006/05/23 19:35:06 brun Exp $       

Copyright  (c) 2005:                                                            *









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