weka.filters.unsupervised.instance
Class NonSparseToSparse

java.lang.Object
  extended by weka.filters.Filter
      extended by weka.filters.unsupervised.instance.NonSparseToSparse
All Implemented Interfaces:
java.io.Serializable, CapabilitiesHandler, StreamableFilter, UnsupervisedFilter

public class NonSparseToSparse
extends Filter
implements UnsupervisedFilter, StreamableFilter

An instance filter that converts all incoming instances into sparse format.

Version:
$Revision: 1.4 $
Author:
Eibe Frank (eibe@cs.waikato.ac.nz)
See Also:
Serialized Form

Constructor Summary
NonSparseToSparse()
           
 
Method Summary
 Capabilities getCapabilities()
          Returns the Capabilities of this filter.
 java.lang.String globalInfo()
          Returns a string describing this filter
 boolean input(Instance instance)
          Input an instance for filtering.
static void main(java.lang.String[] argv)
          Main method for testing this class.
 boolean setInputFormat(Instances instanceInfo)
          Sets the format of the input instances.
 
Methods inherited from class weka.filters.Filter
batchFilterFile, batchFinished, filterFile, getCapabilities, getOutputFormat, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, numPendingOutput, output, outputPeek, toString, useFilter, wekaStaticWrapper
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

NonSparseToSparse

public NonSparseToSparse()
Method Detail

globalInfo

public java.lang.String globalInfo()
Returns a string describing this filter

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

setInputFormat

public boolean setInputFormat(Instances instanceInfo)
                       throws java.lang.Exception
Sets the format of the input instances.

Overrides:
setInputFormat in class Filter
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 format cannot be processed

input

public boolean input(Instance instance)
Input an instance for filtering. Ordinarily the instance is processed and made available for output immediately. Some filters require all instances be read before producing output.

Overrides:
input in class Filter
Parameters:
instance - the input instance.
Returns:
true if the filtered instance may now be collected with output().
Throws:
java.lang.IllegalStateException - if no input format has been set.

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