/***********************************************************************
This file is part of KEEL-software, the Data Mining tool for regression,
classification, clustering, pattern mining and so on.
Copyright (C) 2004-2010
F. Herrera (herrera@decsai.ugr.es)
L. S�nchez (luciano@uniovi.es)
J. Alcal�-Fdez (jalcala@decsai.ugr.es)
S. Garc�a (sglopez@ujaen.es)
A. Fern�ndez (alberto.fernandez@ujaen.es)
J. Luengo (julianlm@decsai.ugr.es)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see http://www.gnu.org/licenses/
**********************************************************************/
/**
* <p>
* @author Written by Manuel Moreno (Universidad de C�rdoba) 01/07/2008
* @version 0.1
* @since JDK 1.5
*</p>
*/
package keel.Algorithms.Decision_Trees.CART.impurities;
import keel.Algorithms.Neural_Networks.NNEP_Common.data.DoubleTransposedDataSet;
/**
* This interface must be followed by any impurity function
*
*/
public interface IImpurityFunction {
/**
*
* It sets the datasets of patters
*
* @param dataset Complete data set of patterns
*/
public void setDataset(DoubleTransposedDataSet dataset);
/**
*
* It compute the impurity value associated
*
* @param patterns index of patterns from dataset associated to node to evaluate
* @param cost Associated cost
* @return Impurity value associated
* @throws Exception
*
*/
public double impurities (int [] patterns, double cost) throws Exception;
}