/* *    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. *//* *    IndividualInstances.java *    Copyright (C) 2003 Peter A. Flach, Nicolas Lachiche * *    Thanks to Amelie Deltour for porting the original C code to Java *    and integrating it into Weka. * */package weka.associations.tertius;import weka.core.Attribute;import weka.core.Instance;import weka.core.Instances;import java.util.Enumeration;/** * @author Peter A. Flach * @author Nicolas Lachiche * @version $Revision: 1.5 $ */public class IndividualInstances extends Instances {      /** for serialization */  private static final long serialVersionUID = -7355054814895636733L;  public IndividualInstances(Instances individuals, Instances parts)     throws Exception {	    super(individuals, individuals.numInstances());    Attribute individualIdentifier = attribute("id");    if (individualIdentifier == null) {      throw new Exception("No identifier found in individuals dataset.");    }    Attribute partIdentifier = parts.attribute("id");    if (partIdentifier == null) {      throw new Exception("No identifier found in parts dataset.");    }    Enumeration enumIndividuals = individuals.enumerateInstances();    while (enumIndividuals.hasMoreElements()) {      Instance individual = (Instance) enumIndividuals.nextElement();      Instances partsOfIndividual = new Instances(parts, 0);      Enumeration enumParts = parts.enumerateInstances();      while (enumParts.hasMoreElements()) {	Instance part = (Instance) enumParts.nextElement();	if (individual.value(individualIdentifier)	    == part.value(partIdentifier)) {	  partsOfIndividual.add(part);	}      }      add(new IndividualInstance(individual, partsOfIndividual));    }	  }}