/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.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.performance;
/**
* The squared error. Sums up the square of the absolute deviations and divides the sum by the
* number of examples.
*
* @author Ingo Mierswa, Simon Fischer
*/
public class SquaredError extends SimpleCriterion {
private static final long serialVersionUID = 322984719296835789L;
public SquaredError() {}
public SquaredError(SquaredError se) {
super(se);
}
@Override
public String getName() {
return "squared_error";
}
/** Calculates the error for the current example. */
@Override
public double countExample(double label, double predictedLabel) {
double dif = label - predictedLabel;
return dif * dif;
}
@Override
public String getDescription() {
return "Averaged squared error";
}
}