001    /**
002     * Copyright (C) 2007-2011, 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     */
019    
020    package org.dllearner.algorithms.refinement;
021    
022    import java.util.Comparator;
023    
024    /**
025     * Marker interface for heuristics in the refinement operator
026     * based learning approach. A heuristic implements a method
027     * to decide which one of two given nodes seems to be more
028     * promising with respect to the learning problem we consider.
029     * 
030     * @author Jens Lehmann
031     *
032     */
033    public interface Heuristic extends Comparator<Node>{
034    
035    }