?? individualinstances.java
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/* * 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)); } }}
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