content: /*
   *    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.
   */
  
  /*
   *    ModelSelection.java
   *    Copyright (C) 1999 University of Waikato, Hamilton, New Zealand
   *
   */
  
  package weka.classifiers.trees.j48;
  
  import weka.core.Instances;
  import weka.core.RevisionHandler;
  
  import java.io.Serializable;
  
  /**
   * Abstract class for model selection criteria.
   *
   * @author Eibe Frank (eibe@cs.waikato.ac.nz)
   * @version $Revision: 1.8 $
   */
  public abstract class ModelSelection
    implements Serializable, RevisionHandler {
  
    /** for serialization */
    private static final long serialVersionUID = -4850147125096133642L;
  
    /**
     * Selects a model for the given dataset.
     *
     * @exception Exception if model can't be selected
     */
    public abstract ClassifierSplitModel selectModel(Instances data) throws Exception;
  
    /**
     * Selects a model for the given train data using the given test data
     *
     * @exception Exception if model can't be selected
     */
    public ClassifierSplitModel selectModel(Instances train, Instances test) 
         throws Exception {
  
      throw new Exception("Model selection method not implemented");
    }
  }
  