/*
* 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.generator;
/**
* The label is 10 * sin(3 * att1) + 12 * sin(7 * att1) + 11 * sin(5 * att2) +
* 9 * sin(10 * att2) + 10 * sin(8 * (att1 + att2)).
*
* @author Ingo Mierswa
* @version $Id: SinusFrequencyFunction.java,v 1.3 2008/05/09 19:22:50 ingomierswa Exp $
*/
public class SinusFrequencyFunction extends RegressionFunction {
public double calculate(double[] att) throws FunctionException {
if (att.length < 2)
throw new FunctionException("Sinus frequency function", "needs at least 2 attributes!");
return 10 * Math.sin(3 * att[0]) + 12 * Math.sin(7 * att[0]) + 11 * Math.sin(5 * att[1]) + 9 * Math.sin(10 * att[1]) + 10 * Math.sin(8 * (att[0] + att[1]));
}
}