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GiniCriterion Class Reference

#include <vigra/random_forest/rf_split.hxx>

Public Member Functions

template<class Array, class Array2>
double operator() (Array const &hist, Array2 const &weights, double total=1.0) const
 
template<class Array>
double operator() (Array const &hist, double total=1.0) const
 

Static Public Member Functions

template<class Array, class Array2>
static double impurity (Array const &hist, Array2 const &weights, double total)
 
template<class Array>
static double impurity (Array const &hist, double total)
 

Detailed Description

Functor to calculate the gini impurity

Member Function Documentation

◆ operator()() [1/2]

template<class Array, class Array2>
double operator() ( Array const & hist,
Array2 const & weights,
double total = 1.0 ) const

calculate the weighted gini impurity based on class histogram and class weights

◆ operator()() [2/2]

template<class Array>
double operator() ( Array const & hist,
double total = 1.0 ) const

calculate the gini based impurity based on class histogram

◆ impurity() [1/2]

template<class Array>
static double impurity ( Array const & hist,
double total )
static

static version of operator(hist total)

◆ impurity() [2/2]

template<class Array, class Array2>
static double impurity ( Array const & hist,
Array2 const & weights,
double total )
static

static version of operator(hist, weights, total)


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

© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de)
Heidelberg Collaboratory for Image Processing, University of Heidelberg, Germany

html generated using doxygen and Python
vigra 1.12.1 (Thu Feb 27 2025)