/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* MicroRecall.java
* Copyright (C) 2009-2010 Aristotle University of Thessaloniki, Thessaloniki, Greece
*/
package mulan.evaluation.measure;
import weka.core.Utils;
/**
* Implementation of the micro-averaged recall measure.
*
* @author Grigorios Tsoumakas
* @version 2010.11.05
*/
public class MicroRecall extends LabelBasedRecall {
/**
* Constructs a new object with given number of labels
*
* @param numOfLabels the number of labels
*/
public MicroRecall(int numOfLabels) {
super(numOfLabels);
}
public double getValue() {
double tp = Utils.sum(truePositives);
double fn = Utils.sum(falseNegatives);
return tp / (tp + fn);
}
public String getName() {
return "Micro-averaged Recall";
}
}