/*
* RapidMiner
*
* Copyright (C) 2001-2008 by Rapid-I and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapid-i.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.learner.functions.kernel.rvm.kernel;
import java.io.Serializable;
/**
* A basis function for kernels.
*
* @author Piotr Kasprzak, Ingo Mierswa
* @version $Id: KernelBasisFunction.java,v 1.4 2008/05/09 19:23:26 ingomierswa Exp $
*/
public class KernelBasisFunction implements Serializable {
private static final long serialVersionUID = 6468092358201066159L;
/** Dimension of the basis vector (= dimension of input vectors) */
protected int dim = 0;
/** Vector */
protected double[] y = null;
/** The kernel to be used as a basis */
protected Kernel kernel = null;
/** Constructor(s) */
public KernelBasisFunction(Kernel kernel, double[] y_vector) {
y = y_vector;
dim = y.length;
this.kernel = kernel;
}
public KernelBasisFunction(Kernel kernel) {
this.kernel = kernel;
}
/** Evaluate KernelBasisFunction */
public double eval(double[] x) {
return kernel.eval(x, y);
}
/** Get basis vector */
public double[] getBasisVector() {
return this.y;
}
}