76 if ( nTot==nLeft || nLeft==0 )
return 0.;
83 return (parentIndex - leftIndex - rightIndex)/(parentIndex);
93 return ( target2 - target*target/
n) /
n;
Calculate the "SeparationGain" for Regression analysis separation criteria used in various training a...
virtual Double_t GetSeparationIndex(const Double_t n, const Double_t target, const Double_t target2)
Separation Index: a simple Variance.
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 th...