RacedIncrementalLogitBoost

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## weka.classifiers.meta
Class RacedIncrementalLogitBoost

    java.lang.Object
      weka.classifiers.Classifier
          weka.classifiers.SingleClassifierEnhancer
              weka.classifiers.RandomizableSingleClassifierEnhancer
                  weka.classifiers.meta.RacedIncrementalLogitBoost

All Implemented Interfaces:
  java.io.Serializable, java.lang.Cloneable, UpdateableClassifier, CapabilitiesHandler, OptionHandler, Randomizable, RevisionHandler

    public class RacedIncrementalLogitBoost

extends RandomizableSingleClassifierEnhancer
implements UpdateableClassifier

Classifier for incremental learning of large datasets by way of racing logit-boosted committees.

Valid options are:

     -C <num>
      Minimum size of chunks.
      (default 500)

     -M <num>
      Maximum size of chunks.
      (default 2000)

     -V <num>
      Size of validation set.
      (default 1000)

     -P <pruning type>
      Committee pruning to perform.
      0=none, 1=log likelihood (default)

     -Q
      Use resampling for boosting.

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

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

     -W
      Full name of base classifier.
      (default: weka.classifiers.trees.DecisionStump)

     Options specific to classifier weka.classifiers.trees.DecisionStump:

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

Options after -- are passed to the designated learner.

Version:
  $Revision: 1.12 $
Author:
  Richard Kirkby (rkirkby@cs.waikato.ac.nz), Eibe Frank (eibe@cs.waikato.ac.nz)
See Also:
  Serialized Form

Field Summary
`static int` | `PRUNETYPE_LOGLIKELIHOOD` log likelihood pruning
`static int` | `PRUNETYPE_NONE` no pruning
`static Tag[]` | `TAGS_PRUNETYPE` The pruning types

Constructor Summary
`RacedIncrementalLogitBoost()` Constructor.

Method Summary
`void` | `buildClassifier(Instances data)` Builds the classifier.
`double[]` | `distributionForInstance(Instance instance)` Computes class distribution of an instance using the best committee.
`int` | `getBestCommitteeChunkSize()` Get the best committee chunk size
`double` | `getBestCommitteeErrorEstimate()` Get the best committee's error on the validation data
`double` | `getBestCommitteeLLEstimate()` Get the best committee's log likelihood on the validation data
`int` | `getBestCommitteeSize()` Get the number of members in the best committee
`Capabilities` | `getCapabilities()` Returns default capabilities of the classifier.
`int` | `getMaxChunkSize()` Get the maximum chunk size
`int` | `getMinChunkSize()` Get the minimum chunk size
`java.lang.String[]` | `getOptions()` Gets the current settings of the Classifier.
`SelectedTag` | `getPruningType()` Get the pruning type
`java.lang.String` | `getRevision()` Returns the revision string.
`boolean` | `getUseResampling()` Get whether resampling is turned on
`int` | `getValidationChunkSize()` Get the validation chunk size
`java.lang.String` | `globalInfo()`
`java.util.Enumeration` | `listOptions()` Returns an enumeration describing the available options
`static void` | `main(java.lang.String[] argv)` Main method for this class.
`java.lang.String` | `maxChunkSizeTipText()`
`java.lang.String` | `minChunkSizeTipText()`
`java.lang.String` | `pruningTypeTipText()`
`void` | `setClassifier(Classifier newClassifier)` Set the base learner.
`void` | `setMaxChunkSize(int chunkSize)` Set the maximum chunk size
`void` | `setMinChunkSize(int chunkSize)` Set the minimum chunk size
`void` | `setOptions(java.lang.String[] options)` Parses a given list of options.
`void` | `setPruningType(SelectedTag pruneType)` Set the pruning type
`void` | `setUseResampling(boolean r)` Set resampling mode
`void` | `setValidationChunkSize(int chunkSize)` Set the validation chunk size
`java.lang.String` | `toString()` Returns description of the boosted classifier.
`void` | `updateClassifier(Instance instance)` Updates the classifier.
`java.lang.String` | `useResamplingTipText()`
`java.lang.String` | `validationChunkSizeTipText()`

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

Methods inherited from class weka.classifiers.SingleClassifierEnhancer
`classifierTipText, getClassifier`

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

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

Field Detail

### PRUNETYPE_NONE

    public static final int PRUNETYPE_NONE

  no pruning

  See Also:
    Constant Field Values

### PRUNETYPE_LOGLIKELIHOOD

    public static final int PRUNETYPE_LOGLIKELIHOOD

  log likelihood pruning

  See Also:
    Constant Field Values

### TAGS_PRUNETYPE

    public static final Tag[] TAGS_PRUNETYPE

  The pruning types

Constructor Detail

### RacedIncrementalLogitBoost

    public RacedIncrementalLogitBoost()

  Constructor.

Method Detail

### getCapabilities

    public Capabilities getCapabilities()

  Returns default capabilities of the classifier.

  Specified by:
    `getCapabilities` in interface `CapabilitiesHandler`
  Overrides:
    `getCapabilities` in class `SingleClassifierEnhancer`
  Returns:
    the capabilities of this classifier
  See Also:
    `Capabilities`

### buildClassifier

    public void buildClassifier(Instances data)
                         throws java.lang.Exception

  Builds the classifier.

  Specified by:
    `buildClassifier` in class `Classifier`
  Parameters:
    `data` - the instances to train the classifier with
  Throws:
    `java.lang.Exception` - if something goes wrong

### updateClassifier

    public void updateClassifier(Instance instance)
                          throws java.lang.Exception

  Updates the classifier.

  Specified by:
    `updateClassifier` in interface `UpdateableClassifier`
  Parameters:
    `instance` - the next instance in the stream of training data
  Throws:
    `java.lang.Exception` - if something goes wrong

### distributionForInstance

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

  Computes class distribution of an instance using the best committee.

  Overrides:
    `distributionForInstance` in class `Classifier`
  Parameters:
    `instance` - the instance to get the distribution for
  Returns:
    the distribution
  Throws:
    `java.lang.Exception` - if anything goes wrong

### listOptions

    public java.util.Enumeration listOptions()

  Returns an enumeration describing the available options

  Specified by:
    `listOptions` in interface `OptionHandler`
  Overrides:
    `listOptions` in class `RandomizableSingleClassifierEnhancer`
  Returns:
    an enumeration of all the available options

### setOptions

    public void setOptions(java.lang.String[] options)
                    throws java.lang.Exception

  Parses a given list of options.

  Valid options are:

       -C <num>
        Minimum size of chunks.
        (default 500)

       -M <num>
        Maximum size of chunks.
        (default 2000)

       -V <num>
        Size of validation set.
        (default 1000)

       -P <pruning type>
        Committee pruning to perform.
        0=none, 1=log likelihood (default)

       -Q
        Use resampling for boosting.

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

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

       -W
        Full name of base classifier.
        (default: weka.classifiers.trees.DecisionStump)

       Options specific to classifier weka.classifiers.trees.DecisionStump:

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

  Specified by:
    `setOptions` in interface `OptionHandler`
  Overrides:
    `setOptions` in class `RandomizableSingleClassifierEnhancer`
  Parameters:
    `options` - the list of options as an array of strings
  Throws:
    `java.lang.Exception` - if an option is not supported

### getOptions

    public java.lang.String[] getOptions()

  Gets the current settings of the Classifier.

  Specified by:
    `getOptions` in interface `OptionHandler`
  Overrides:
    `getOptions` in class `RandomizableSingleClassifierEnhancer`
  Returns:
    an array of strings suitable for passing to setOptions

### globalInfo

    public java.lang.String globalInfo()

  Returns:
    a description of the classifier suitable for displaying in the explorer/experimenter gui

### setClassifier

    public void setClassifier(Classifier newClassifier)

  Set the base learner.

  Overrides:
    `setClassifier` in class `SingleClassifierEnhancer`
  Parameters:
    `newClassifier` - the classifier to use.
  Throws:
    `java.lang.IllegalArgumentException` - if base classifier cannot handle numeric class

### minChunkSizeTipText

    public java.lang.String minChunkSizeTipText()

  Returns:
    tip text for this property suitable for displaying in the explorer/experimenter gui

### setMinChunkSize

    public void setMinChunkSize(int chunkSize)

  Set the minimum chunk size

  Parameters:
    `chunkSize` - the minimum chunk size

### getMinChunkSize

    public int getMinChunkSize()

  Get the minimum chunk size

  Returns:
    the chunk size

### maxChunkSizeTipText

    public java.lang.String maxChunkSizeTipText()

  Returns:
    tip text for this property suitable for displaying in the explorer/experimenter gui

### setMaxChunkSize

    public void setMaxChunkSize(int chunkSize)

  Set the maximum chunk size

  Parameters:
    `chunkSize` - the maximum chunk size

### getMaxChunkSize

    public int getMaxChunkSize()

  Get the maximum chunk size

  Returns:
    the chunk size

### validationChunkSizeTipText

    public java.lang.String validationChunkSizeTipText()

  Returns:
    tip text for this property suitable for displaying in the explorer/experimenter gui

### setValidationChunkSize

    public void setValidationChunkSize(int chunkSize)

  Set the validation chunk size

  Parameters:
    `chunkSize` - the validation chunk size

### getValidationChunkSize

    public int getValidationChunkSize()

  Get the validation chunk size

  Returns:
    the chunk size

### pruningTypeTipText

    public java.lang.String pruningTypeTipText()

  Returns:
    tip text for this property suitable for displaying in the explorer/experimenter gui

### setPruningType

    public void setPruningType(SelectedTag pruneType)

  Set the pruning type

  Parameters:
    `pruneType` - the pruning type

### getPruningType

    public SelectedTag getPruningType()

  Get the pruning type

  Returns:
    the type

### useResamplingTipText

    public java.lang.String useResamplingTipText()

  Returns:
    tip text for this property suitable for displaying in the explorer/experimenter gui

### setUseResampling

    public void setUseResampling(boolean r)

  Set resampling mode

  Parameters:
    `r` - true if resampling should be done

### getUseResampling

    public boolean getUseResampling()

  Get whether resampling is turned on

  Returns:
    true if resampling output is on

### getBestCommitteeChunkSize

    public int getBestCommitteeChunkSize()

  Get the best committee chunk size

  Returns:
    the best committee chunk size

### getBestCommitteeSize

    public int getBestCommitteeSize()

  Get the number of members in the best committee

  Returns:
    the number of members

### getBestCommitteeErrorEstimate

    public double getBestCommitteeErrorEstimate()

  Get the best committee's error on the validation data

  Returns:
    the best committee's error

### getBestCommitteeLLEstimate

    public double getBestCommitteeLLEstimate()

  Get the best committee's log likelihood on the validation data

  Returns:
    best committee's log likelihood

### toString

    public java.lang.String toString()

  Returns description of the boosted classifier.

  Overrides:
    `toString` in class `java.lang.Object`
  Returns:
    description of the boosted classifier as a string

### getRevision

    public java.lang.String getRevision()

  Returns the revision string.

  Specified by:
    `getRevision` in interface `RevisionHandler`
  Returns:
    the revision

### main

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

  Main method for this class.

  Parameters:
    `argv` - the commandline parameters

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