MergeInfrequentNominalValues

java.lang.Object
- weka.filters.Filter
- - weka.filters.SimpleFilter
  - - weka.filters.SimpleBatchFilter
    - - weka.filters.unsupervised.attribute.MergeInfrequentNominalValues

All Implemented Interfaces:: java.io.Serializable, CapabilitiesHandler, CapabilitiesIgnorer, CommandlineRunnable, OptionHandler, RevisionHandler, WeightedAttributesHandler, WeightedInstancesHandler, UnsupervisedFilter

public class MergeInfrequentNominalValues
extends SimpleBatchFilter
implements UnsupervisedFilter, WeightedAttributesHandler, WeightedInstancesHandler

Merges all values of the specified nominal attributes that are insufficiently frequent.

Valid options are:

 -N <int>
  The minimum frequency for a value to remain (default: 2).

 -R <range>
  Sets list of attributes to act on (or its inverse). 'first and 'last' are accepted as well.'
  E.g.: first-5,7,9,20-last
  (default: 1,2)

 -V
  Invert matching sense (i.e. act on all attributes not specified in list)

 -S
  Use short IDs for merged attribute values.

 -output-debug-info
  If set, filter is run in debug mode and
  may output additional info to the console

 -do-not-check-capabilities
  If set, filter capabilities are not checked before filter is built
  (use with caution).

Version:: $Revision: ???? $
Author:: Eibe Frank
See Also:: Serialized Form

Constructor Summary

Constructors
Constructor and Description

MergeInfrequentNominalValues()

Constructors
Constructor and Description
`MergeInfrequentNominalValues()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`allowAccessToFullInputFormat()` We need access to the full input data in determineOutputFormat.
`java.lang.String`	`attributeIndicesTipText()` Returns the tip text for this property
`java.lang.String`	`getAttributeIndices()` Get the current range selection.
`Capabilities`	`getCapabilities()` Returns the Capabilities of this filter.
`boolean`	`getInvertSelection()` Get whether the supplied attributes are to be acted on or all other attributes.
`int`	`getMinimumFrequency()` Gets the minimum frequency.
`java.lang.String[]`	`getOptions()` Gets the current settings of the filter.
`java.lang.String`	`getRevision()` Returns the revision string.
`boolean`	`getUseShortIDs()` Get whether short IDs are to be used.
`java.lang.String`	`globalInfo()` Returns a string describing this filter.
`java.lang.String`	`invertSelectionTipText()` Returns the tip text for this property
`java.util.Enumeration<Option>`	`listOptions()` Returns an enumeration describing the available options.
`static void`	`main(java.lang.String[] args)` runs the filter with the given arguments
`java.lang.String`	`minimumFrequencyTipText()` Returns the tip text for this property
`void`	`setAttributeIndices(java.lang.String rangeList)` Set which attributes are to be acted on (or not, if invert is true)
`void`	`setAttributeIndicesArray(int[] attributes)` Set which attributes are to be acted on (or not, if invert is true)
`void`	`setInvertSelection(boolean invert)` Set whether selected attributes should be acted on or all other attributes.
`void`	`setMinimumFrequency(int minF)` Sets the minimum frequency.
`void`	`setOptions(java.lang.String[] options)` Parses a given list of options.
`void`	`setUseShortIDs(boolean m_UseShortIDs)` Sets whether short IDs are to be used.
`java.lang.String`	`useShortIDsTipText()` Returns the tip text for this property

Methods inherited from class weka.filters.SimpleBatchFilter
batchFinished, input, input

Methods inherited from class weka.filters.SimpleFilter
setInputFormat

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface weka.core.OptionHandler
makeCopy

- Constructor Detail
  - MergeInfrequentNominalValues
```
public MergeInfrequentNominalValues()
```
- Method Detail
  - globalInfo
```
public java.lang.String globalInfo()
```
    Returns a string describing this filter.
    
    Specified by:
    
    globalInfo in class SimpleFilter
    
    Returns:
    
    a description of the filter suitable for displaying in the explorer/experimenter gui
  - listOptions
```
public java.util.Enumeration<Option> listOptions()
```
    Returns an enumeration describing the available options.
    
    Specified by:
    
    listOptions in interface OptionHandler
    
    Overrides:
    
    listOptions in class Filter
    
    Returns:
    
    an enumeration of all the available options.
  - getOptions
```
public java.lang.String[] getOptions()
```
    Gets the current settings of the filter.
    
    Specified by:
    
    getOptions in interface OptionHandler
    
    Overrides:
    
    getOptions in class Filter
    
    Returns:
    
    an array of strings suitable for passing to setOptions
  - setOptions
```
public void setOptions(java.lang.String[] options)
                throws java.lang.Exception
```
    Parses a given list of options.
    Valid options are:
```
 -N <int>
  The minimum frequency for a value to remain (default: 2).
 
```
```
 -R <range>
  Sets list of attributes to act on (or its inverse). 'first and 'last' are accepted as well.'
  E.g.: first-5,7,9,20-last
  (default: 1,2)
```
```
 -V
  Invert matching sense (i.e. act on all attributes not specified in list)
```
```
 -S
  Use short IDs for merged attribute values.
```
```
 -output-debug-info
  If set, filter is run in debug mode and
  may output additional info to the console
```
```
 -do-not-check-capabilities
  If set, filter capabilities are not checked before filter is built
  (use with caution).
```
    Specified by:
    
    setOptions in interface OptionHandler
    
    Overrides:
    
    setOptions in class Filter
    
    Parameters:
    
    options - the list of options as an array of strings
    
    Throws:
    
    java.lang.Exception - if an option is not supported
  - minimumFrequencyTipText
```
public java.lang.String minimumFrequencyTipText()
```
    Returns the tip text for this property
    
    Returns:
    
    tip text for this property suitable for displaying in the explorer/experimenter gui
  - getMinimumFrequency
```
public int getMinimumFrequency()
```
    Gets the minimum frequency.
    
    Returns:
    
    int the minimum frequency.
  - setMinimumFrequency
```
public void setMinimumFrequency(int minF)
```
    Sets the minimum frequency.
    
    Parameters:
    
    minF - the minimum frequency as an integer.
  - attributeIndicesTipText
```
public java.lang.String attributeIndicesTipText()
```
    Returns the tip text for this property
    
    Returns:
    
    tip text for this property suitable for displaying in the explorer/experimenter gui
  - getAttributeIndices
```
public java.lang.String getAttributeIndices()
```
    Get the current range selection.
    
    Returns:
    
    a string containing a comma separated list of ranges
  - setAttributeIndices
```
public void setAttributeIndices(java.lang.String rangeList)
```
    Set which attributes are to be acted on (or not, if invert is true)
    
    Parameters:
    
    rangeList - a string representing the list of attributes. Since the string will typically come from a user, attributes are indexed from 1.
    eg: first-3,5,6-last
  - setAttributeIndicesArray
```
public void setAttributeIndicesArray(int[] attributes)
```
    Set which attributes are to be acted on (or not, if invert is true)
    
    Parameters:
    
    attributes - an array containing indexes of attributes to select. Since the array will typically come from a program, attributes are indexed from 0.
  - invertSelectionTipText
```
public java.lang.String invertSelectionTipText()
```
    Returns the tip text for this property
    
    Returns:
    
    tip text for this property suitable for displaying in the explorer/experimenter gui
  - getInvertSelection
```
public boolean getInvertSelection()
```
    Get whether the supplied attributes are to be acted on or all other attributes.
    
    Returns:
    
    true if the supplied attributes will be kept
  - setInvertSelection
```
public void setInvertSelection(boolean invert)
```
    Set whether selected attributes should be acted on or all other attributes.
    
    Parameters:
    
    invert - the new invert setting
  - useShortIDsTipText
```
public java.lang.String useShortIDsTipText()
```
    Returns the tip text for this property
    
    Returns:
    
    tip text for this property suitable for displaying in the explorer/experimenter gui
  - getUseShortIDs
```
public boolean getUseShortIDs()
```
    Get whether short IDs are to be used.
    
    Returns:
    
    true if short IDs are to be used.
  - setUseShortIDs
```
public void setUseShortIDs(boolean m_UseShortIDs)
```
    Sets whether short IDs are to be used.
    
    Parameters:
    
    m_UseShortIDs - if true, short IDs will be used
  - allowAccessToFullInputFormat
```
public boolean allowAccessToFullInputFormat()
```
    We need access to the full input data in determineOutputFormat.
    
    Overrides:
    
    allowAccessToFullInputFormat in class SimpleBatchFilter
    
    Returns:
    
    whether determineOutputFormat has access to the full input dataset
  - getCapabilities
```
public Capabilities getCapabilities()
```
    Returns the Capabilities of this filter.
    
    Specified by:
    
    getCapabilities in interface CapabilitiesHandler
    
    Overrides:
    
    getCapabilities in class Filter
    
    Returns:
    
    the capabilities of this object
    
    See Also:
    
    Capabilities
  - getRevision
```
public java.lang.String getRevision()
```
    Returns the revision string.
    
    Specified by:
    
    getRevision in interface RevisionHandler
    
    Overrides:
    
    getRevision in class Filter
    
    Returns:
    
    the revision
  - main
```
public static void main(java.lang.String[] args)
```
    runs the filter with the given arguments
    
    Parameters:
    
    args - the commandline arguments

Class MergeInfrequentNominalValues

Constructor Summary

Method Summary

Methods inherited from class weka.filters.SimpleBatchFilter

Methods inherited from class weka.filters.SimpleFilter

Methods inherited from class weka.filters.Filter

Methods inherited from class java.lang.Object

Methods inherited from interface weka.core.OptionHandler

Constructor Detail

MergeInfrequentNominalValues

Method Detail

globalInfo

listOptions

getOptions

setOptions

minimumFrequencyTipText

getMinimumFrequency

setMinimumFrequency

attributeIndicesTipText

getAttributeIndices

setAttributeIndices

setAttributeIndicesArray

invertSelectionTipText

getInvertSelection

setInvertSelection

useShortIDsTipText

getUseShortIDs

setUseShortIDs

allowAccessToFullInputFormat

getCapabilities

getRevision

main