/*
 *    NullAttributeClassObserver.java
 *    Copyright (C) 2007 University of Waikato, Hamilton, New Zealand
 *    @author Richard Kirkby (rkirkby@cs.waikato.ac.nz)
 *
 *    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.
 */
package tr.gov.ulakbim.jDenetX.classifiers.attributes;

import tr.gov.ulakbim.jDenetX.AbstractMOAObject;
import tr.gov.ulakbim.jDenetX.classifiers.splits.SplitCriterion;

public class NullAttributeClassObserver extends AbstractMOAObject implements
        AttributeClassObserver {

    private static final long serialVersionUID = 1L;

    public void observeAttributeClass(double attVal, int classVal, double weight) {

    }

    public double probabilityOfAttributeValueGivenClass(double attVal,
                                                        int classVal) {
        return 0.0;
    }

    public double totalWeightOfClassObservations() {
        return 0.0;
    }

    public double weightOfObservedMissingValues() {
        return 0.0;
    }

    public void getDescription(StringBuilder sb, int indent) {
        // TODO Auto-generated method stub

    }

    public AttributeSplitSuggestion getBestEvaluatedSplitSuggestion(
            SplitCriterion criterion, double[] preSplitDist, int attIndex,
            boolean binaryOnly) {
        return null;
    }

}