/**
* 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 absolute error: <i>Sum(|label-predicted|)/#examples</i>. Mean absolue error is the average of
* the difference between predicted and actual value in all test cases; it is the average prediction
* error.
*
* @author Ingo Mierswa
*/
public class AbsoluteError extends SimpleCriterion {
private static final long serialVersionUID = 1113614384637128963L;
public AbsoluteError() {}
public AbsoluteError(AbsoluteError ae) {
super(ae);
}
@Override
public double countExample(double label, double predictedLabel) {
double dif = Math.abs(label - predictedLabel);
return dif;
}
@Override
public String getName() {
return "absolute_error";
}
@Override
public String getDescription() {
return "Average absolute deviation of the prediction from the actual value";
}
}