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The Waikato Environment for Knowledge Analysis (WEKA), a machine
learning workbench. This is the stable version. Apart from bugfixes, this version
does not receive any other updates.
/*
* 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 3 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, see .
*/
/*
* Randomize.java
* Copyright (C) 1999-2012 University of Waikato, Hamilton, New Zealand
*
*/
package weka.filters.unsupervised.instance;
import java.util.Enumeration;
import java.util.Random;
import java.util.Vector;
import weka.core.Capabilities;
import weka.core.Capabilities.Capability;
import weka.core.Instance;
import weka.core.Instances;
import weka.core.Option;
import weka.core.OptionHandler;
import weka.core.RevisionUtils;
import weka.core.Utils;
import weka.filters.Filter;
import weka.filters.UnsupervisedFilter;
/**
* Randomly shuffles the order of instances passed
* through it. The random number generator is reset with the seed value whenever
* a new set of instances is passed in.
*
*
*
* Valid options are:
*
*
*
* -S <num>
* Specify the random number seed (default 42)
*
*
*
*
* @author Len Trigg ([email protected])
* @version $Revision: 12037 $
*/
public class Randomize extends Filter implements UnsupervisedFilter,
OptionHandler {
/** for serialization */
static final long serialVersionUID = 8854479785121877582L;
/** The random number seed */
protected int m_Seed = 42;
/** The current random number generator */
protected Random m_Random;
/**
* Returns a string describing this classifier
*
* @return a description of the classifier suitable for displaying in the
* explorer/experimenter gui
*/
public String globalInfo() {
return "Randomly shuffles the order of instances passed through it. "
+ "The random number generator is reset with the seed value whenever "
+ "a new set of instances is passed in.";
}
/**
* Returns an enumeration describing the available options.
*
* @return an enumeration of all the available options.
*/
@Override
public Enumeration