TMVA::RegressionVariance Class Reference

Definition at line 70 of file RegressionVariance.h.

Public Member Functions
	RegressionVariance ()
	RegressionVariance (const RegressionVariance &s)
virtual	~RegressionVariance ()
TString	GetName ()
Double_t	GetSeparationGain (const Double_t &nLeft, const Double_t &targetLeft, const Double_t &target2Left, const Double_t &nTot, const Double_t &targetTot, const Double_t &target2Tot)
	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 &n, const Double_t &target, const Double_t &target2)
	Separation Index: a simple Variance. More...

Protected Attributes
TString	fName

#include <TMVA/RegressionVariance.h>

Constructor & Destructor Documentation

TMVA::RegressionVariance::RegressionVariance ( )

inline

Definition at line 75 of file RegressionVariance.h.

TMVA::RegressionVariance::RegressionVariance ( const RegressionVariance &  s )

inline

Definition at line 78 of file RegressionVariance.h.

virtual TMVA::RegressionVariance::~RegressionVariance ( )

inlinevirtual

Definition at line 81 of file RegressionVariance.h.

Member Function Documentation

TString TMVA::RegressionVariance::GetName ( )

inline

Definition at line 92 of file RegressionVariance.h.

Double_t TMVA::RegressionVariance::GetSeparationGain	(	const Double_t &	nLeft,
		const Double_t &	targetLeft,
		const Double_t &	target2Left,
		const Double_t &	nTot,
		const Double_t &	targetTot,
		const Double_t &	target2Tot
	)

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 crition which is optimized for when trying to increase the information in the system for the Regression: as the "Gain is maximised", the RMS (sqrt(variance)) which is used as a "separation" index should be as small as possible. the "figure of merit" here has to be -(rms left+rms-right) or 1/rms...

Definition at line 53 of file RegressionVariance.cxx.

Double_t TMVA::RegressionVariance::GetSeparationIndex ( const Double_t &  n, const Double_t &  target, const Double_t &  target2  )

virtual

Separation Index: a simple Variance.

Definition at line 72 of file RegressionVariance.cxx.

Member Data Documentation

TString TMVA::RegressionVariance::fName

protected

Definition at line 96 of file RegressionVariance.h.

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

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