public class CfsSubsetEval extends ASEvaluation implements SubsetEvaluator, OptionHandler, TechnicalInformationHandler
@phdthesis{Hall1998, address = {Hamilton, New Zealand}, author = {M. A. Hall}, school = {University of Waikato}, title = {Correlation-based Feature Subset Selection for Machine Learning}, year = {1998} }Valid options are:
-M Treat missing values as a separate value.
-L Don't include locally predictive attributes.
Discretize
,
Serialized FormConstructor and Description |
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CfsSubsetEval()
Constructor
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Modifier and Type | Method and Description |
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void |
buildEvaluator(Instances data)
Generates a attribute evaluator.
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void |
clean()
Tells the evaluator that the attribute selection process is complete.
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double |
evaluateSubset(java.util.BitSet subset)
evaluates a subset of attributes
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Capabilities |
getCapabilities()
Returns the capabilities of this evaluator.
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boolean |
getLocallyPredictive()
Return true if including locally predictive attributes
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boolean |
getMissingSeparate()
Return true is missing is treated as a separate value
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java.lang.String[] |
getOptions()
Gets the current settings of CfsSubsetEval
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java.lang.String |
getRevision()
Returns the revision string.
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TechnicalInformation |
getTechnicalInformation()
Returns an instance of a TechnicalInformation object, containing detailed
information about the technical background of this class, e.g., paper
reference or book this class is based on.
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java.lang.String |
globalInfo()
Returns a string describing this attribute evaluator
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java.util.Enumeration |
listOptions()
Returns an enumeration describing the available options.
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java.lang.String |
locallyPredictiveTipText()
Returns the tip text for this property
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static void |
main(java.lang.String[] args)
Main method for testing this class.
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java.lang.String |
missingSeparateTipText()
Returns the tip text for this property
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int[] |
postProcess(int[] attributeSet)
Calls locallyPredictive in order to include locally predictive attributes
(if requested).
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void |
setLocallyPredictive(boolean b)
Include locally predictive attributes
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void |
setMissingSeparate(boolean b)
Treat missing as a separate value
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void |
setOptions(java.lang.String[] options)
Parses and sets a given list of options.
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java.lang.String |
toString()
returns a string describing CFS
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forName, makeCopies
public java.lang.String globalInfo()
public TechnicalInformation getTechnicalInformation()
getTechnicalInformation
in interface TechnicalInformationHandler
public java.util.Enumeration listOptions()
listOptions
in interface OptionHandler
public void setOptions(java.lang.String[] options) throws java.lang.Exception
-M Treat missing values as a separate value.
-L Don't include locally predictive attributes.
setOptions
in interface OptionHandler
options
- the list of options as an array of stringsjava.lang.Exception
- if an option is not supportedpublic java.lang.String locallyPredictiveTipText()
public void setLocallyPredictive(boolean b)
b
- true or falsepublic boolean getLocallyPredictive()
public java.lang.String missingSeparateTipText()
public void setMissingSeparate(boolean b)
b
- true or falsepublic boolean getMissingSeparate()
public java.lang.String[] getOptions()
getOptions
in interface OptionHandler
public Capabilities getCapabilities()
getCapabilities
in interface CapabilitiesHandler
getCapabilities
in class ASEvaluation
Capabilities
public void buildEvaluator(Instances data) throws java.lang.Exception
buildEvaluator
in class ASEvaluation
data
- set of instances serving as training datajava.lang.Exception
- if the evaluator has not been generated successfullypublic double evaluateSubset(java.util.BitSet subset) throws java.lang.Exception
evaluateSubset
in interface SubsetEvaluator
subset
- a bitset representing the attribute subset to be evaluatedjava.lang.Exception
- if the subset could not be evaluatedpublic java.lang.String toString()
toString
in class java.lang.Object
public int[] postProcess(int[] attributeSet) throws java.lang.Exception
postProcess
in class ASEvaluation
attributeSet
- the set of attributes found by the searchjava.lang.Exception
- if postprocessing fails for some reasonpublic void clean()
ASEvaluation
clean
in class ASEvaluation
public java.lang.String getRevision()
getRevision
in interface RevisionHandler
getRevision
in class ASEvaluation
public static void main(java.lang.String[] args)
args
- the options