001/**
002 * Copyright (C) 2007 - 2016, Jens Lehmann
003 *
004 * This file is part of DL-Learner.
005 *
006 * DL-Learner is free software; you can redistribute it and/or modify
007 * it under the terms of the GNU General Public License as published by
008 * the Free Software Foundation; either version 3 of the License, or
009 * (at your option) any later version.
010 *
011 * DL-Learner is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
014 * GNU General Public License for more details.
015 *
016 * You should have received a copy of the GNU General Public License
017 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
018 */
019package org.dllearner.utilities.owl;
020
021import java.util.Comparator;
022
023import com.google.common.collect.ComparisonChain;
024import org.dllearner.learningproblems.EvaluatedDescriptionPosNeg;
025
026/**
027 * Comparator for evaluated descriptions, which orders them by
028 * accuracy as first criterion, length as second criterion, and
029 * syntactic structure as third criterion.
030 * 
031 * @author Jens Lehmann
032 *
033 */
034public class EvaluatedDescriptionPosNegComparator implements Comparator<EvaluatedDescriptionPosNeg> {
035
036        /* (non-Javadoc)
037         * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
038         */
039        @Override
040        public int compare(EvaluatedDescriptionPosNeg ed1, EvaluatedDescriptionPosNeg ed2) {
041                return ComparisonChain.start()
042                                .compare(ed1.getAccuracy(), ed2.getAccuracy())
043                                .compare(ed1.getDescriptionLength(), ed2.getDescriptionLength())
044                                .compare(ed1.getDescription(), ed2.getDescription())
045                                .result();
046        }
047
048}