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## weka.classifiers.meta
Class StackingC

    java.lang.Object
      weka.classifiers.AbstractClassifier
          weka.classifiers.MultipleClassifiersCombiner
              weka.classifiers.ParallelMultipleClassifiersCombiner
                  weka.classifiers.RandomizableParallelMultipleClassifiersCombiner
                      weka.classifiers.meta.Stacking
                          weka.classifiers.meta.StackingC

All Implemented Interfaces:
  java.io.Serializable, java.lang.Cloneable, Classifier, CapabilitiesHandler, OptionHandler, RevisionHandler, TechnicalInformationHandler

    public class StackingC

extends Stacking
implements OptionHandler, TechnicalInformationHandler

Implements StackingC (more efficient version of stacking).
For more information, see
A.K. Seewald: How to Make Stacking Better and Faster While Also Taking Care of an Unknown Weakness. In: Nineteenth International Conference on Machine Learning, 554-561, 2002.
Note: requires meta classifier to be a numeric prediction scheme.

BibTeX:

     @inproceedings{Seewald2002,
        author = {A.K. Seewald},
        booktitle = {Nineteenth International Conference on Machine Learning},
        editor = {C. Sammut and A. Hoffmann},
        pages = {554-561},
        publisher = {Morgan Kaufmann Publishers},
        title = {How to Make Stacking Better and Faster While Also Taking Care of an Unknown Weakness},
        year = {2002}
     }

Valid options are:

     -M <scheme specification>
      Full name of meta classifier, followed by options.
      Must be a numeric prediction scheme. Default: Linear Regression.

     -X <number of folds>
      Sets the number of cross-validation folds.

     -S <num>
      Random number seed.
      (default 1)

     -B <classifier specification>
      Full class name of classifier to include, followed
      by scheme options. May be specified multiple times.
      (default: "weka.classifiers.rules.ZeroR")

     -D
      If set, classifier is run in debug mode and
      may output additional info to the console

Version:
  $Revision: 5928 $
Author:
  Eibe Frank (eibe@cs.waikato.ac.nz), Alexander K. Seewald (alex@seewald.at)
See Also:
  Serialized Form

Constructor Summary
`StackingC()` The constructor.

Method Summary
`double[]` | `distributionForInstance(Instance instance)` Classifies a given instance using the stacked classifier.
`java.lang.String` | `getRevision()` Returns the revision string.
`TechnicalInformation` | `getTechnicalInformation()` Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on.
`java.lang.String` | `globalInfo()` Returns a string describing classifier
`static void` | `main(java.lang.String[] argv)` Main method for testing this class.
`java.lang.String` | `toString()` Output a representation of this classifier

Methods inherited from class weka.classifiers.meta.Stacking
`buildClassifier, getCapabilities, getMetaClassifier, getNumFolds, getOptions, listOptions, metaClassifierTipText, numFoldsTipText, setMetaClassifier, setNumFolds, setOptions`

Methods inherited from class weka.classifiers.RandomizableParallelMultipleClassifiersCombiner
`getSeed, seedTipText, setSeed`

Methods inherited from class weka.classifiers.ParallelMultipleClassifiersCombiner
`getNumExecutionSlots, numExecutionSlotsTipText, setNumExecutionSlots`

Methods inherited from class weka.classifiers.MultipleClassifiersCombiner
`classifiersTipText, getClassifier, getClassifiers, setClassifiers`

Methods inherited from class weka.classifiers.AbstractClassifier
`classifyInstance, debugTipText, forName, getDebug, makeCopies, makeCopy, setDebug`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Methods inherited from interface weka.core.OptionHandler
`getOptions, listOptions, setOptions`

Constructor Detail

### StackingC

    public StackingC()

  The constructor.

Method Detail

### globalInfo

    public java.lang.String globalInfo()

  Returns a string describing classifier

  Overrides:
    `globalInfo` in class `Stacking`
  Returns:
    a description suitable for displaying in the explorer/experimenter gui

### getTechnicalInformation

    public TechnicalInformation getTechnicalInformation()

  Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on.

  Specified by:
    `getTechnicalInformation` in interface `TechnicalInformationHandler`
  Overrides:
    `getTechnicalInformation` in class `Stacking`
  Returns:
    the technical information about this class

### distributionForInstance

    public double[] distributionForInstance(Instance instance)
                                     throws java.lang.Exception

  Classifies a given instance using the stacked classifier.

  Specified by:
    `distributionForInstance` in interface `Classifier`
  Overrides:
    `distributionForInstance` in class `Stacking`
  Parameters:
    `instance` - the instance to be classified
  Returns:
    the distribution
  Throws:
    `java.lang.Exception` - if instance could not be classified successfully

### toString

    public java.lang.String toString()

  Output a representation of this classifier

  Overrides:
    `toString` in class `Stacking`
  Returns:
    a string representation of the classifier

### getRevision

    public java.lang.String getRevision()

  Returns the revision string.

  Specified by:
    `getRevision` in interface `RevisionHandler`
  Overrides:
    `getRevision` in class `Stacking`
  Returns:
    the revision

### main

    public static void main(java.lang.String[] argv)

  Main method for testing this class.

  Parameters:
    `argv` - should contain the following arguments: -t training file [-T test file] [-c class index]

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