/*
* 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.
*/
/*
* Coverage.java
* Copyright (C) 2009-2010 Aristotle University of Thessaloniki, Thessaloniki, Greece
*/
package mulan.evaluation.measure;
/**
* Implementation of the coverage measure.
*
* @author Grigorios Tsoumakas
* @version 2010.12.04
*/
public class Coverage extends RankingMeasureBase {
public String getName() {
return "Coverage";
}
@Override
public double getIdealValue() {
return 1;
}
protected void updateRanking(int[] ranking, boolean[] trueLabels) {
int howDeep = 0;
int numLabels = trueLabels.length;
for (int rank = numLabels; rank >= 1; rank--) {
int indexOfRank;
for (indexOfRank = 0; indexOfRank < numLabels; indexOfRank++) {
if (ranking[indexOfRank] == rank) {
break;
}
}
if (trueLabels[indexOfRank]) {
howDeep = rank - 1;
break;
}
}
sum += howDeep;
count++;
}
}