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Reference Guide
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TMVA::SdivSqrtSplusB Class Reference

Implementation of the SdivSqrtSplusB as separation criterion.

\( Index = \frac{S}{\sqrt{S+B}} \) (statistical significance)

Definition at line 44 of file SdivSqrtSplusB.h.

Public Member Functions

 SdivSqrtSplusB ()
 SdivSqrtSplusB (const SdivSqrtSplusB &g)
virtual ~SdivSqrtSplusB ()
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...
virtual Double_t GetSeparationIndex (const Double_t s, const Double_t b)
 Index = S/sqrt(S+B) (statistical significance) More...
- Public Member Functions inherited from TMVA::SeparationBase
 SeparationBase ()
 Constructor. More...
 SeparationBase (const SeparationBase &s)
 Copy constructor. More...
virtual ~SeparationBase ()
const TStringGetName ()

Additional Inherited Members

- Protected Attributes inherited from TMVA::SeparationBase
TString fName
Double_t fPrecisionCut

#include <TMVA/SdivSqrtSplusB.h>

Inheritance diagram for TMVA::SdivSqrtSplusB:

Constructor & Destructor Documentation

◆ SdivSqrtSplusB() [1/2]

TMVA::SdivSqrtSplusB::SdivSqrtSplusB ( )

Definition at line 49 of file SdivSqrtSplusB.h.

◆ SdivSqrtSplusB() [2/2]

TMVA::SdivSqrtSplusB::SdivSqrtSplusB ( const SdivSqrtSplusB g)

Definition at line 52 of file SdivSqrtSplusB.h.

◆ ~SdivSqrtSplusB()

virtual TMVA::SdivSqrtSplusB::~SdivSqrtSplusB ( )

Definition at line 55 of file SdivSqrtSplusB.h.

Member Function Documentation

◆ GetSeparationGain()

Double_t TMVA::SdivSqrtSplusB::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.

into a "left-node" and a "right-node" (N * Index_parent) - (N_left * Index_left) - (N_right * Index_right) this is then the quality criterion which is optimized for when trying to increase the information in the system (making the best selection

Reimplemented from TMVA::SeparationBase.

Definition at line 58 of file SdivSqrtSplusB.cxx.

◆ GetSeparationIndex()

Double_t TMVA::SdivSqrtSplusB::GetSeparationIndex ( const Double_t  s,
const Double_t  b 

Index = S/sqrt(S+B) (statistical significance)

Implements TMVA::SeparationBase.

Definition at line 44 of file SdivSqrtSplusB.cxx.

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