/*
* 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 2 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Regularizer.java
* Copyright (C) 2004 Mikhail Bilenko and Sugato Basu
*
*/
package weka.clusterers.regularizers;
import java.io.Serializable;
/**
* A parent class for distortion measure regularizers
*
* @author Mikhail Bilenko (mbilenko@cs.utexas.edu) and Sugato Basu
* (sugato@cs.utexas.edu)
* @version $Revision: 1.1 $ */
public abstract class Regularizer implements Cloneable, Serializable {
/** Compute the regularizer value for given weights */
public abstract double computeRegularizer(double[] weights);
/** Compute the gradient of regularizer wrt to given weight */
public abstract double gradient(double weight);
/** Create a copy of this regularizer */
public Object clone() {
Regularizer reg = null;
try {
reg = (Regularizer) super.clone();
} catch (CloneNotSupportedException e) {
System.err.println("Regularizer can't clone");
}
// copy the fields below
return reg;
}
}