public class GainRatioAttributeEval extends ASEvaluation implements AttributeEvaluator, OptionHandler
-M treat missing values as a seperate value.
Discretize
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Serialized FormConstructor and Description |
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GainRatioAttributeEval()
Constructor
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Modifier and Type | Method and Description |
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void |
buildEvaluator(Instances data)
Initializes a gain ratio attribute evaluator.
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double |
evaluateAttribute(int attribute)
evaluates an individual attribute by measuring the gain ratio of the class
given the attribute.
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Capabilities |
getCapabilities()
Returns the capabilities of this evaluator.
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boolean |
getMissingMerge()
get whether missing values are being distributed or not
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java.lang.String[] |
getOptions()
Gets the current settings of WrapperSubsetEval.
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java.lang.String |
getRevision()
Returns the revision string.
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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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static void |
main(java.lang.String[] args)
Main method.
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java.lang.String |
missingMergeTipText()
Returns the tip text for this property
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int[] |
postProcess(int[] attributeSet)
Provides a chance for a attribute evaluator to do any special
post processing of the selected attribute set.
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void |
setMissingMerge(boolean b)
distribute the counts for missing values across observed values
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void |
setOptions(java.lang.String[] options)
Parses a given list of options.
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java.lang.String |
toString()
Return a description of the evaluator
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clean, forName, makeCopies
public java.lang.String globalInfo()
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 seperate value.
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 missingMergeTipText()
public void setMissingMerge(boolean b)
b
- true=distribute missing values.public boolean getMissingMerge()
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 evaluateAttribute(int attribute) throws java.lang.Exception
evaluateAttribute
in interface AttributeEvaluator
attribute
- the index of the attribute to be evaluatedjava.lang.Exception
- if the attribute could not be evaluatedpublic java.lang.String toString()
toString
in class java.lang.Object
public java.lang.String getRevision()
getRevision
in interface RevisionHandler
getRevision
in class ASEvaluation
public int[] postProcess(int[] attributeSet)
ASEvaluation
postProcess
in class ASEvaluation
attributeSet
- the set of attributes found by the searchpublic static void main(java.lang.String[] args)
args
- the options -t training file