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The Waikato Environment for Knowledge Analysis (WEKA), a machine
learning workbench. This version represents the developer version, the
"bleeding edge" of development, you could say. New functionality gets added
to this version.
/*
* 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 .
*/
/*
* RemoveByName.java
* Copyright (C) 2009-2012 University of Waikato, Hamilton, New Zealand
*
*/
package weka.filters.unsupervised.attribute;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Vector;
import weka.core.Capabilities;
import weka.core.Instance;
import weka.core.Instances;
import weka.core.Option;
import weka.core.RevisionUtils;
import weka.core.Utils;
import weka.filters.SimpleStreamFilter;
/**
* Removes attributes based on a regular expression
* matched against their names.
*
*
*
* Valid options are:
*
*
*
* -D
* Turns on output of debugging information.
*
*
*
* -E <regular expression>
* The regular expression to match the attribute names against.
* (default: ^.*id$)
*
*
*
* -V
* Flag for inverting the matching sense. If set, attributes are kept
* instead of deleted.
* (default: off)
*
*
*
*
* @author FracPete (fracpete at waikato dot ac dot nz)
* @version $Revision: 10394 $
*/
public class RemoveByName extends SimpleStreamFilter {
/** for serialization. */
private static final long serialVersionUID = -3335106965521265631L;
/** the default expression. */
public final static String DEFAULT_EXPRESSION = "^.*id$";
/** the regular expression for selecting the attributes by name. */
protected String m_Expression = DEFAULT_EXPRESSION;
/** whether to invert the matching sense. */
protected boolean m_InvertSelection;
/** the Remove filter used internally for removing the attributes. */
protected Remove m_Remove;
/**
* Returns a string describing this classifier.
*
* @return a description of the classifier suitable for displaying in the
* explorer/experimenter gui
*/
@Override
public String globalInfo() {
return "Removes attributes based on a regular expression matched against "
+ "their names but will not remove the class attribute.";
}
/**
* Gets an enumeration describing the available options.
*
* @return an enumeration of all the available options.
*/
@Override
public Enumeration