/*
* RapidMiner
*
* Copyright (C) 2001-2011 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 att1*att1*att1 + att2*att2 + att3.
*
* @author Ingo Mierswa
*/
public class PolynomialFunction extends RegressionFunction {
public double calculate(double[] att) throws FunctionException {
if (att.length < 3)
throw new FunctionException("Polynomial function", "needs at least 3 attributes!");
return (att[0] * att[0] * att[0] + att[1] * att[1] + att[2]);
}
}