weka.attributeSelection
Class ASSearch

java.lang.Object
  weka.attributeSelection.ASSearch

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

BestFirst, ExhaustiveSearch, ForwardSelection, GeneticSearch, RaceSearch, RandomSearch, Ranker, RankSearch

public abstract class ASSearch

extends java.lang.Object

implements java.io.Serializable

Abstract attribute selection search class.

Version:

$Revision: 1.8 $

Author:

Mark Hall (mhall@cs.waikato.ac.nz)

See Also:

Serialized Form

Constructor Summary

ASSearch()

Method Summary

static ASSearch	forName(java.lang.String searchName, java.lang.String[] options) Creates a new instance of a search class given it's class name and (optional) arguments to pass to it's setOptions method.
abstract int[]	search(ASEvaluation ASEvaluator, Instances data) Searches the attribute subset/ranking space.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ASSearch

public ASSearch()

Method Detail

search

public abstract int[] search(ASEvaluation ASEvaluator,
                             Instances data)
                      throws java.lang.Exception

Searches the attribute subset/ranking space.

Parameters:

ASEvaluator - the attribute evaluator to guide the search

data - the training instances.

Returns:

an array (not necessarily ordered) of selected attribute indexes

Throws:

java.lang.Exception - if the search can't be completed

forName

public static ASSearch forName(java.lang.String searchName,
                               java.lang.String[] options)
                        throws java.lang.Exception

Creates a new instance of a search class given it's class name and (optional) arguments to pass to it's setOptions method. If the search method implements OptionHandler and the options parameter is non-null, the search method will have it's options set.

Parameters:

searchName - the fully qualified class name of the search class

options - an array of options suitable for passing to setOptions. May be null.

Returns:

the newly created search object, ready for use.

Throws:

java.lang.Exception - if the search class name is invalid, or the options supplied are not acceptable to the search class.