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NoSplit.java
Package: Weka-3-2.rar [view]
Upload User: rhdiban
Upload Date: 2013-08-09
Package Size: 15085k
Code Size: 3k
Category:
Windows Develop
Development Platform:
Java
- /*
- * 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.
- */
- /*
- * NoSplit.java
- * Copyright (C) 1999 Eibe Frank
- *
- */
- package weka.classifiers.j48;
- import weka.core.*;
- /**
- * Class implementing a "no-split"-split.
- *
- * @author Eibe Frank (eibe@cs.waikato.ac.nz)
- * @version $Revision: 1.5 $
- */
- public final class NoSplit extends ClassifierSplitModel{
- /**
- * Creates "no-split"-split for given distribution.
- */
- public NoSplit(Distribution distribution){
- m_distribution = new Distribution(distribution);
- m_numSubsets = 1;
- }
- /**
- * Creates a "no-split"-split for a given set of instances.
- *
- * @exception Exception if split can't be built successfully
- */
- public final void buildClassifier(Instances instances)
- throws Exception {
- m_distribution = new Distribution(instances);
- m_numSubsets = 1;
- }
- /**
- * Always returns 0 because only there is only one subset.
- */
- public final int whichSubset(Instance instance){
- return 0;
- }
- /**
- * Always returns null because there is only one subset.
- */
- public final double [] weights(Instance instance){
- return null;
- }
- /**
- * Does nothing because no condition has to be satisfied.
- */
- public final String leftSide(Instances instances){
- return "";
- }
- /**
- * Does nothing because no condition has to be satisfied.
- */
- public final String rightSide(int index, Instances instances){
- return "";
- }
- /**
- * Returns a string containing java source code equivalent to the test
- * made at this node. The instance being tested is called "i".
- *
- * @param index index of the nominal value tested
- * @param data the data containing instance structure info
- * @return a value of type 'String'
- */
- public final String sourceExpression(int index, Instances data) {
- return "true"; // or should this be false??
- }
- }