weka.filters.unsupervised.attribute

Class Transpose

java.lang.Object

weka.filters.Filter

weka.filters.SimpleFilter

weka.filters.SimpleBatchFilter

weka.filters.unsupervised.attribute.Transpose

All Implemented Interfaces:

java.io.Serializable, CapabilitiesHandler, CapabilitiesIgnorer, CommandlineRunnable, OptionHandler, RevisionHandler, WeightedAttributesHandler, WeightedInstancesHandler, UnsupervisedFilter

public class Transpose
extends SimpleBatchFilter
implements UnsupervisedFilter, WeightedAttributesHandler, WeightedInstancesHandler

Transposes the data: instances become attributes and attributes become instances. If the first attribute in the original data is a nominal or string identifier attribute, this identifier attribute will be used to create attribute names in the transposed data. All attributes other than the identifier attribute must be numeric. The attribute names in the original data are used to create an identifier attribute of type string in the transposed data.

This filter can only process one batch of data, e.g., it cannot be used in the the FilteredClassifier.

This filter can only be applied when no class attribute has been set.

Date values will be turned into simple numeric values.

See Also:

Serialized Form

Field Summary

Fields inherited from class weka.filters.Filter

m_Debug, m_DoNotCheckCapabilities, m_FirstBatchDone, m_InputRelAtts, m_InputStringAtts, m_NewBatch, m_OutputRelAtts, m_OutputStringAtts

Constructor Summary

Constructors

Constructor and Description
Transpose()

Method Summary

Modifier and Type	Method and Description
protected Instances	determineOutputFormat(Instances inputFormat) Determines the output format based on the input format and returns this.
Capabilities	getCapabilities() Returns the Capabilities of this filter.
java.lang.String	getRevision() Returns the revision string.
java.lang.String	globalInfo() Returns a string describing this filter.
static void	main(java.lang.String[] args) runs the filter with the given arguments
protected Instances	process(Instances instances) Processes the given data (may change the provided dataset) and returns the modified version.

Methods inherited from class weka.filters.SimpleBatchFilter

allowAccessToFullInputFormat, batchFinished, hasImmediateOutputFormat, input

Methods inherited from class weka.filters.SimpleFilter

reset, setInputFormat

Methods inherited from class weka.filters.Filter

batchFilterFile, bufferInput, copyValues, copyValues, debugTipText, doNotCheckCapabilitiesTipText, filterFile, flushInput, getCapabilities, getCopyOfInputFormat, getDebug, getDoNotCheckCapabilities, getInputFormat, getOptions, getOutputFormat, initInputLocators, initOutputLocators, inputFormatPeek, isFirstBatchDone, isNewBatch, isOutputFormatDefined, listOptions, makeCopies, makeCopy, mayRemoveInstanceAfterFirstBatchDone, numPendingOutput, output, outputFormatPeek, outputPeek, postExecution, preExecution, push, push, resetQueue, run, runFilter, setDebug, setDoNotCheckCapabilities, setOptions, setOutputFormat, testInputFormat, toString, useFilter, wekaStaticWrapper

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Transpose

public Transpose()

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

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

determineOutputFormat

protected Instances determineOutputFormat(Instances inputFormat)
                                   throws java.lang.Exception

Determines the output format based on the input format and returns this. In case the output format cannot be returned immediately, i.e., immediateOutputFormat() returns false, then this method will be called from batchFinished().

Specified by:

determineOutputFormat in class SimpleFilter

Parameters:

inputFormat - the input format to base the output format on

Returns:

the output format

Throws:

java.lang.Exception - in case the determination goes wrong

See Also:

SimpleBatchFilter.hasImmediateOutputFormat(), SimpleBatchFilter.batchFinished()

process

protected Instances process(Instances instances)
                     throws java.lang.Exception

Processes the given data (may change the provided dataset) and returns the modified version. This method is called in batchFinished().

Specified by:

process in class SimpleFilter

Parameters:

instances - the data to process

Returns:

the modified data

Throws:

java.lang.Exception - in case the processing goes wrong

See Also:

SimpleBatchFilter.batchFinished()

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