Package weka.attributeSelection
Class ASSearch
- java.lang.Object
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- weka.attributeSelection.ASSearch
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- All Implemented Interfaces:
java.io.Serializable
,RevisionHandler
- Direct Known Subclasses:
BestFirst
,ExhaustiveSearch
,GeneticSearch
,GreedyStepwise
,LinearForwardSelection
,RaceSearch
,RandomSearch
,Ranker
,RankSearch
,ScatterSearchV1
,SubsetSizeForwardSelection
public abstract class ASSearch extends java.lang.Object implements java.io.Serializable, RevisionHandler
Abstract attribute selection search class.- Version:
- $Revision: 1.12 $
- Author:
- Mark Hall (mhall@cs.waikato.ac.nz)
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description ASSearch()
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Method Summary
All Methods Static Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description 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.java.lang.String
getRevision()
Returns the revision string.static ASSearch[]
makeCopies(ASSearch model, int num)
Creates copies of the current search scheme.abstract int[]
search(ASEvaluation ASEvaluator, Instances data)
Searches the attribute subset/ranking space.
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Method Detail
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getRevision
public java.lang.String getRevision()
Returns the revision string.- Specified by:
getRevision
in interfaceRevisionHandler
- Returns:
- the revision
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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 searchdata
- the training instances.- Returns:
- an array (not necessarily ordered) of selected attribute indexes
- Throws:
java.lang.Exception
- if the search can't be completed
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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 classoptions
- 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.
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makeCopies
public static ASSearch[] makeCopies(ASSearch model, int num) throws java.lang.Exception
Creates copies of the current search scheme. Note that this method now uses Serialization to perform a deep copy, so the search object must be fully Serializable. Any currently built model will now be copied as well.- Parameters:
model
- an example search scheme to copynum
- the number of search scheme copies to create.- Returns:
- an array of search schemes.
- Throws:
java.lang.Exception
- if an error occurs
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