/*
* NominalAttributeBinaryTest.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.classifiers.conditionals.InstanceConditionalBinaryTest;
import tr.gov.ulakbim.jDenetX.core.InstancesHeader;
import weka.core.Instance;
public class NominalAttributeBinaryTest extends InstanceConditionalBinaryTest {
private static final long serialVersionUID = 1L;
protected int attIndex;
protected int attValue;
public NominalAttributeBinaryTest(int attIndex, int attValue) {
this.attIndex = attIndex;
this.attValue = attValue;
}
@Override
public int branchForInstance(Instance inst) {
int instAttIndex = this.attIndex < inst.classIndex() ? this.attIndex
: this.attIndex + 1;
return inst.isMissing(instAttIndex) ? -1 : ((int) inst
.value(instAttIndex) == this.attValue ? 0 : 1);
}
@Override
public String describeConditionForBranch(int branch, InstancesHeader context) {
if ((branch == 0) || (branch == 1)) {
return InstancesHeader.getAttributeNameString(context,
this.attIndex)
+ (branch == 0 ? " = " : " != ")
+ InstancesHeader.getNominalValueString(context,
this.attIndex, this.attValue);
}
throw new IndexOutOfBoundsException();
}
public void getDescription(StringBuilder sb, int indent) {
// TODO Auto-generated method stub
}
@Override
public int[] getAttsTestDependsOn() {
return new int[]{this.attIndex};
}
}