Class PKIDiscretize
- java.lang.Object
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- weka.filters.Filter
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- weka.filters.unsupervised.attribute.PotentialClassIgnorer
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- weka.filters.unsupervised.attribute.Discretize
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- weka.filters.unsupervised.attribute.PKIDiscretize
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- All Implemented Interfaces:
java.io.Serializable
,CapabilitiesHandler
,OptionHandler
,RevisionHandler
,TechnicalInformationHandler
,WeightedInstancesHandler
,UnsupervisedFilter
public class PKIDiscretize extends Discretize implements TechnicalInformationHandler
Discretizes numeric attributes using equal frequency binning, where the number of bins is equal to the square root of the number of non-missing values.
For more information, see:
Ying Yang, Geoffrey I. Webb: Proportional k-Interval Discretization for Naive-Bayes Classifiers. In: 12th European Conference on Machine Learning, 564-575, 2001. BibTeX:@inproceedings{Yang2001, author = {Ying Yang and Geoffrey I. Webb}, booktitle = {12th European Conference on Machine Learning}, pages = {564-575}, publisher = {Springer}, series = {LNCS}, title = {Proportional k-Interval Discretization for Naive-Bayes Classifiers}, volume = {2167}, year = {2001} }
Valid options are:-unset-class-temporarily Unsets the class index temporarily before the filter is applied to the data. (default: no)
-R <col1,col2-col4,...> Specifies list of columns to Discretize. First and last are valid indexes. (default: first-last)
-V Invert matching sense of column indexes.
-D Output binary attributes for discretized attributes.
- Version:
- $Revision: 1.9 $
- Author:
- Richard Kirkby (rkirkby@cs.waikato.ac.nz)
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description PKIDiscretize()
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
binsTipText()
Returns the tip text for this propertyjava.lang.String
findNumBinsTipText()
Returns the tip text for this propertyint
getBins()
Ignoredboolean
getFindNumBins()
Get the value of FindNumBins.java.lang.String[]
getOptions()
Gets the current settings of the filter.java.lang.String
getRevision()
Returns the revision string.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.boolean
getUseEqualFrequency()
Get the value of UseEqualFrequency.java.lang.String
globalInfo()
Returns a string describing this filterjava.util.Enumeration
listOptions()
Gets an enumeration describing the available options.static void
main(java.lang.String[] argv)
Main method for testing this class.void
setBins(int numBins)
Ignoredvoid
setFindNumBins(boolean newFindNumBins)
Set the value of FindNumBins.boolean
setInputFormat(Instances instanceInfo)
Sets the format of the input instances.void
setOptions(java.lang.String[] options)
Parses a given list of options.void
setUseEqualFrequency(boolean newUseEqualFrequency)
Set the value of UseEqualFrequency.java.lang.String
useEqualFrequencyTipText()
Returns the tip text for this property-
Methods inherited from class weka.filters.unsupervised.attribute.Discretize
attributeIndicesTipText, batchFinished, desiredWeightOfInstancesPerIntervalTipText, getAttributeIndices, getCapabilities, getCutPoints, getDesiredWeightOfInstancesPerInterval, getInvertSelection, getMakeBinary, input, invertSelectionTipText, makeBinaryTipText, setAttributeIndices, setAttributeIndicesArray, setDesiredWeightOfInstancesPerInterval, setInvertSelection, setMakeBinary
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Methods inherited from class weka.filters.unsupervised.attribute.PotentialClassIgnorer
getIgnoreClass, getOutputFormat, ignoreClassTipText, setIgnoreClass
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Methods inherited from class weka.filters.Filter
batchFilterFile, filterFile, getCapabilities, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, numPendingOutput, output, outputPeek, toString, useFilter, wekaStaticWrapper
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Method Detail
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setInputFormat
public boolean setInputFormat(Instances instanceInfo) throws java.lang.Exception
Sets the format of the input instances.- Overrides:
setInputFormat
in classDiscretize
- Parameters:
instanceInfo
- an Instances object containing the input instance structure (any instances contained in the object are ignored - only the structure is required).- Returns:
- true if the outputFormat may be collected immediately
- Throws:
java.lang.Exception
- if the input format can't be set successfully
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listOptions
public java.util.Enumeration listOptions()
Gets an enumeration describing the available options.- Specified by:
listOptions
in interfaceOptionHandler
- Overrides:
listOptions
in classDiscretize
- Returns:
- an enumeration of all the available options.
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setOptions
public void setOptions(java.lang.String[] options) throws java.lang.Exception
Parses a given list of options. Valid options are:-unset-class-temporarily Unsets the class index temporarily before the filter is applied to the data. (default: no)
-R <col1,col2-col4,...> Specifies list of columns to Discretize. First and last are valid indexes. (default: first-last)
-V Invert matching sense of column indexes.
-D Output binary attributes for discretized attributes.
- Specified by:
setOptions
in interfaceOptionHandler
- Overrides:
setOptions
in classDiscretize
- Parameters:
options
- the list of options as an array of strings- Throws:
java.lang.Exception
- if an option is not supported
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getOptions
public java.lang.String[] getOptions()
Gets the current settings of the filter.- Specified by:
getOptions
in interfaceOptionHandler
- Overrides:
getOptions
in classDiscretize
- Returns:
- an array of strings suitable for passing to setOptions
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globalInfo
public java.lang.String globalInfo()
Returns a string describing this filter- Overrides:
globalInfo
in classDiscretize
- Returns:
- a description of the filter suitable for displaying in the explorer/experimenter gui
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getTechnicalInformation
public 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.- Specified by:
getTechnicalInformation
in interfaceTechnicalInformationHandler
- Returns:
- the technical information about this class
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findNumBinsTipText
public java.lang.String findNumBinsTipText()
Returns the tip text for this property- Overrides:
findNumBinsTipText
in classDiscretize
- Returns:
- tip text for this property suitable for displaying in the explorer/experimenter gui
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getFindNumBins
public boolean getFindNumBins()
Get the value of FindNumBins.- Overrides:
getFindNumBins
in classDiscretize
- Returns:
- Value of FindNumBins.
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setFindNumBins
public void setFindNumBins(boolean newFindNumBins)
Set the value of FindNumBins.- Overrides:
setFindNumBins
in classDiscretize
- Parameters:
newFindNumBins
- Value to assign to FindNumBins.
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useEqualFrequencyTipText
public java.lang.String useEqualFrequencyTipText()
Returns the tip text for this property- Overrides:
useEqualFrequencyTipText
in classDiscretize
- Returns:
- tip text for this property suitable for displaying in the explorer/experimenter gui
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getUseEqualFrequency
public boolean getUseEqualFrequency()
Get the value of UseEqualFrequency.- Overrides:
getUseEqualFrequency
in classDiscretize
- Returns:
- Value of UseEqualFrequency.
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setUseEqualFrequency
public void setUseEqualFrequency(boolean newUseEqualFrequency)
Set the value of UseEqualFrequency.- Overrides:
setUseEqualFrequency
in classDiscretize
- Parameters:
newUseEqualFrequency
- Value to assign to UseEqualFrequency.
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binsTipText
public java.lang.String binsTipText()
Returns the tip text for this property- Overrides:
binsTipText
in classDiscretize
- Returns:
- tip text for this property suitable for displaying in the explorer/experimenter gui
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getBins
public int getBins()
Ignored- Overrides:
getBins
in classDiscretize
- Returns:
- the number of bins.
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setBins
public void setBins(int numBins)
Ignored- Overrides:
setBins
in classDiscretize
- Parameters:
numBins
- the number of bins
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getRevision
public java.lang.String getRevision()
Returns the revision string.- Specified by:
getRevision
in interfaceRevisionHandler
- Overrides:
getRevision
in classDiscretize
- Returns:
- the revision
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main
public static void main(java.lang.String[] argv)
Main method for testing this class.- Parameters:
argv
- should contain arguments to the filter: use -h for help
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