keel.Algorithms.Decision_Trees.CART.impurities

Interface IImpurityFunction

All Known Implementing Classes:

Gini, LeastSquaresDeviation

public interface IImpurityFunction

This interface must be followed by any impurity function

Method Summary

Modifier and Type	Method and Description
double	impurities(int[] patterns, double cost) It compute the impurity value associated
void	setDataset(DoubleTransposedDataSet dataset) It sets the datasets of patters

Method Detail

setDataset

void setDataset(DoubleTransposedDataSet dataset)

It sets the datasets of patters

Parameters:

dataset - Complete data set of patterns

impurities

double impurities(int[] patterns,
                  double cost)
           throws java.lang.Exception

It compute the impurity value associated

Parameters:

patterns - index of patterns from dataset associated to node to evaluate

cost - Associated cost

Returns:

Impurity value associated

Throws:

java.lang.Exception