/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.com
*
* This program is free software: you can redistribute it and/or modify it under the terms of the
* GNU Affero 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
* Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License along with this program.
* If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.operator.features.weighting;
import com.rapidminer.operator.features.Individual;
import com.rapidminer.operator.features.IndividualOperator;
import java.util.LinkedList;
import java.util.List;
/**
* This PopulationOperator realizes a simple weighting, i.e. creates a list of clones of each
* individual and weights one attribute in each of the clones with some different weights.
*
* @author Ingo Mierswa
*/
public class SimpleWeighting extends IndividualOperator {
/**
* If a weight is equal to this compare weight, all weights are used for building a new
* individual.
*/
private double compareWeight = 0.0d;
/** These weights are used for building new individuals. */
private double[] weights = null;
/** Creates a simple weighting. */
public SimpleWeighting(double compareWeight, double[] weights) {
this.compareWeight = compareWeight;
this.weights = weights;
}
@Override
public List<Individual> operate(Individual individual) {
double[] orginal = individual.getWeightsClone();
List<Individual> l = new LinkedList<Individual>();
for (int i = 0; i < orginal.length; i++) {
if (orginal[i] == compareWeight) {
for (int w = 0; w < weights.length; w++) {
double[] clone = individual.getWeightsClone();
clone[i] = weights[w];
l.add(new Individual(clone));
}
}
}
return l;
}
}