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package de.lmu.ifi.dbs.elki.algorithm.clustering.kmeans;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2013
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
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/>.
*/
import de.lmu.ifi.dbs.elki.utilities.RandomFactory;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizer;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameterization.Parameterization;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.RandomParameter;
/**
* Abstract base class for common k-means initializations.
*
* @author Erich Schubert
*
* @param <V> Vector type
*/
public abstract class AbstractKMeansInitialization<V> implements KMeansInitialization<V> {
/**
* Random number generator
*/
protected RandomFactory rnd;
/**
* Constructor.
*
* @param rnd Random number generator.
*/
public AbstractKMeansInitialization(RandomFactory rnd) {
this.rnd = rnd;
}
/**
* Parameterization class.
*
* @author Erich Schubert
*
* @apiviz.exclude
*/
public abstract static class Parameterizer<V> extends AbstractParameterizer {
/**
* Random generator
*/
protected RandomFactory rnd;
@Override
protected void makeOptions(Parameterization config) {
super.makeOptions(config);
RandomParameter rndP = new RandomParameter(KMeans.SEED_ID);
if(config.grab(rndP)) {
rnd = rndP.getValue();
}
}
}
}
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