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java.lang.Objectweka.filters.Filter
weka.filters.SimpleFilter
weka.filters.SimpleBatchFilter
weka.filters.unsupervised.attribute.NumericToNominal
public class NumericToNominal
A filter for turning numeric attributes into nominal ones. Unlike discretization, it just takes all numeric values and adds them to the list of nominal values of that attribute. Useful after CSV imports, to enforce certain attributes to become nominal, e.g., the class attribute, containing values from 1 to 5.
Valid options are:-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.
Constructor Summary | |
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NumericToNominal()
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Method Summary | |
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java.lang.String |
attributeIndicesTipText()
Returns the tip text for this property |
java.lang.String |
getAttributeIndices()
Gets the current range selection |
Capabilities |
getCapabilities()
Returns the Capabilities of this filter. |
boolean |
getInvertSelection()
Gets whether the supplied columns are to be worked on or the others. |
java.lang.String[] |
getOptions()
Gets the current settings of the filter. |
java.lang.String |
getRevision()
Returns the revision string. |
java.lang.String |
globalInfo()
Returns a string describing this filter |
java.lang.String |
invertSelectionTipText()
Returns the tip text for this property |
java.util.Enumeration |
listOptions()
Gets an enumeration describing the available options. |
static void |
main(java.lang.String[] args)
Runs the filter with the given parameters. |
void |
setAttributeIndices(java.lang.String value)
Sets which attributes are to be "nominalized" (only numeric attributes among the selection will be transformed). |
void |
setAttributeIndicesArray(int[] value)
Sets which attributes are to be transoformed to nominal. |
void |
setInvertSelection(boolean value)
Sets whether selected columns should be worked on or all the others apart from these. |
void |
setOptions(java.lang.String[] options)
Parses a given list of options. |
Methods inherited from class weka.filters.SimpleBatchFilter |
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batchFinished, input |
Methods inherited from class weka.filters.SimpleFilter |
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debugTipText, getDebug, setDebug, setInputFormat |
Methods inherited from class weka.filters.Filter |
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batchFilterFile, filterFile, getCapabilities, getOutputFormat, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, numPendingOutput, output, outputPeek, toString, useFilter, wekaStaticWrapper |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public NumericToNominal()
Method Detail |
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public java.lang.String globalInfo()
globalInfo
in class SimpleFilter
public java.util.Enumeration listOptions()
listOptions
in interface OptionHandler
listOptions
in class SimpleFilter
public void setOptions(java.lang.String[] options) throws java.lang.Exception
-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.
setOptions
in interface OptionHandler
setOptions
in class SimpleFilter
options
- the list of options as an array of strings
java.lang.Exception
- if an option is not supportedSimpleFilter.reset()
public java.lang.String[] getOptions()
getOptions
in interface OptionHandler
getOptions
in class SimpleFilter
public java.lang.String invertSelectionTipText()
public boolean getInvertSelection()
public void setInvertSelection(boolean value)
value
- the new invert settingpublic java.lang.String attributeIndicesTipText()
public java.lang.String getAttributeIndices()
public void setAttributeIndices(java.lang.String value)
value
- a string representing the list of attributes. Since
the string will typically come from a user, attributes
are indexed from 1. java.lang.IllegalArgumentException
- if an invalid range list is suppliedpublic void setAttributeIndicesArray(int[] value)
value
- an array containing indexes of attributes to nominalize.
Since the array will typically come from a program,
attributes are indexed from 0.
java.lang.IllegalArgumentException
- if an invalid set of ranges is suppliedpublic Capabilities getCapabilities()
getCapabilities
in interface CapabilitiesHandler
getCapabilities
in class Filter
Capabilities
public java.lang.String getRevision()
public static void main(java.lang.String[] args)
args
- the commandline options
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