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Class weka.filters.ReplaceMissingValuesFilter 

java.lang.Object
   |
   +----weka.filters.Filter
           |
           +----weka.filters.ReplaceMissingValuesFilter
public class ReplaceMissingValuesFilter
extends Filter
Replaces all missing values for nominal and numeric attributes in a dataset with the modes and means from the training data.

Version:
$Revision: 1.2 $
Author:
Eibe Frank (eibe@cs.waikato.ac.nz)

Constructor Index

o ReplaceMissingValuesFilter()

Method Index

o batchFinished()
Signify that this batch of input to the filter is finished.
o input(Instance)
Input an instance for filtering.
o inputFormat(Instances)
Sets the format of the input instances.
o main(String[])
Main method for testing this class.

Constructors

o ReplaceMissingValuesFilter 
 public ReplaceMissingValuesFilter()

Methods

o inputFormat 
 public boolean inputFormat(Instances instanceInfo) throws Exception
Sets the format of the input instances.

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: Exception
if the input format can't be set successfully
Overrides:
inputFormat in class Filter
o input 
 public boolean input(Instance instance) throws Exception
Input an instance for filtering. Filter requires all training instances be read before producing output.

Parameters:
instance - the input instance
Returns:
true if the filtered instance may now be collected with output().
Throws: Exception
if the input instance was not of the correct format or if there was a problem with the filtering.
Overrides:
input in class Filter
o batchFinished 
 public boolean batchFinished() throws Exception
Signify that this batch of input to the filter is finished. If the filter requires all instances prior to filtering, output() may now be called to retrieve the filtered instances.

Returns:
true if there are instances pending output
Throws: Exception
if no input structure has been defined
Overrides:
batchFinished in class Filter
o main 
 public static void main(String argv[])
Main method for testing this class.

Parameters:
argv - should contain arguments to the filter: use -h for help 
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