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java.lang.Objectweka.filters.Filter
weka.filters.supervised.attribute.NominalToBinary
public class NominalToBinary
Converts all nominal attributes into binary numeric attributes. An attribute with k values is transformed into k binary attributes if the class is nominal (using the one-attribute-per-value approach). Binary attributes are left binary. If the class is numeric, k - 1 new binary attributes are generated (in the manner described in "Classification and Regression Trees").
Valid filter-specific options are:
-N
If binary attributes are to be coded as nominal ones.
-A
For each nominal value a new attribute is created, not only if there are more than 2 values.
| Constructor Summary | |
|---|---|
NominalToBinary()
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| Method Summary | |
|---|---|
boolean |
batchFinished()
Signify that this batch of input to the filter is finished. |
java.lang.String |
binaryAttributesNominalTipText()
Returns the tip text for this property |
boolean |
getBinaryAttributesNominal()
Gets if binary attributes are to be treated as nominal ones. |
java.lang.String[] |
getOptions()
Gets the current settings of the filter. |
boolean |
getTransformAllValues()
Gets if all nominal values are turned into new attributes, not only if there are more than 2. |
java.lang.String |
globalInfo()
Returns a string describing this filter |
boolean |
input(Instance instance)
Input an instance for filtering. |
java.util.Enumeration |
listOptions()
Returns an enumeration describing the available options. |
static void |
main(java.lang.String[] argv)
Main method for testing this class. |
void |
setBinaryAttributesNominal(boolean bool)
Sets if binary attributes are to be treates as nominal ones. |
boolean |
setInputFormat(Instances instanceInfo)
Sets the format of the input instances. |
void |
setOptions(java.lang.String[] options)
Parses the options for this object. |
void |
setTransformAllValues(boolean bool)
Sets whether all nominal values are transformed into new attributes, not just if there are more than 2. |
java.lang.String |
transformAllValuesTipText()
Returns the tip text for this property |
| Methods inherited from class weka.filters.Filter |
|---|
batchFilterFile, filterFile, getOutputFormat, inputFormat, isOutputFormatDefined, numPendingOutput, output, outputFormat, outputPeek, useFilter |
| Methods inherited from class java.lang.Object |
|---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
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public NominalToBinary()
| Method Detail |
|---|
public java.lang.String globalInfo()
public boolean setInputFormat(Instances instanceInfo)
throws java.lang.Exception
setInputFormat in class FilterinstanceInfo - an Instances object containing the input
instance structure (any instances contained in the object are
ignored - only the structure is required).
java.lang.Exception - if the input format can't be set
successfullypublic boolean input(Instance instance)
input in class Filterinstance - the input instance
java.lang.IllegalStateException - if no input format has been setpublic boolean batchFinished()
batchFinished in class Filterjava.lang.IllegalStateException - if no input structure has been definedpublic java.util.Enumeration listOptions()
listOptions in interface OptionHandler
public void setOptions(java.lang.String[] options)
throws java.lang.Exception
-N
If binary attributes are to be coded as nominal ones.
-A
Whether all nominal values are turned into new attributes.
setOptions in interface OptionHandleroptions - the list of options as an array of strings
java.lang.Exception - if an option is not supportedpublic java.lang.String[] getOptions()
getOptions in interface OptionHandlerpublic java.lang.String binaryAttributesNominalTipText()
public boolean getBinaryAttributesNominal()
public void setBinaryAttributesNominal(boolean bool)
bool - true if binary attributes are to be treated as nominal onespublic java.lang.String transformAllValuesTipText()
public boolean getTransformAllValues()
public void setTransformAllValues(boolean bool)
bool - true if all nominal value are transformed into new attributespublic static void main(java.lang.String[] argv)
argv - should contain arguments to the filter:
use -h for help
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