weka.classifiers.rules.part

## Class ClassifierDecList

- java.lang.Object
- - weka.classifiers.rules.part.ClassifierDecList

- All Implemented Interfaces:
    java.io.Serializable, RevisionHandler
  Direct Known Subclasses:
    C45PruneableDecList, PruneableDecList

      public class ClassifierDecList
      extends java.lang.Object
      implements java.io.Serializable, RevisionHandler

  Class for handling a rule (partial tree) for a decision list.
  Version:
    $Revision: 10153 $
  Author:
    Eibe Frank (eibe@cs.waikato.ac.nz)
  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `ClassifierDecList(ModelSelection toSelectLocModel, int minNum)` Constructor - just calls constructor of class DecList.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `buildDecList(Instances data, boolean leaf)` Builds the partial tree without hold out set.
    `void` | `buildRule(Instances data)` Method for building a pruned partial tree.
    `int` | `chooseIndex()` Method for choosing a subset to expand.
    `int` | `chooseLastIndex()` Choose last index (ie.
    `double` | `classifyInstance(Instance instance)` Classifies an instance.
    `void` | `cleanup(Instances justHeaderInfo)` Cleanup in order to save memory.
    `double[]` | `distributionForInstance(Instance instance)` Returns class probabilities for a weighted instance.
    `java.lang.String` | `getRevision()` Returns the revision string.
    `java.lang.String` | `toString()` Prints rules.
    `double` | `weight(Instance instance)` Returns the weight a rule assigns to an instance.

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### ClassifierDecList

          public ClassifierDecList(ModelSelection toSelectLocModel,
                           int minNum)

      Constructor - just calls constructor of class DecList.

  - ### Method Detail

    - #### buildRule

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

      Method for building a pruned partial tree.
      Throws:
        `java.lang.Exception` - if something goes wrong

    - #### buildDecList

          public void buildDecList(Instances data,
                          boolean leaf)
                            throws java.lang.Exception

      Builds the partial tree without hold out set.
      Throws:
        `java.lang.Exception` - if something goes wrong

    - #### classifyInstance

          public double classifyInstance(Instance instance)
                                  throws java.lang.Exception

      Classifies an instance.
      Throws:
        `java.lang.Exception` - if something goes wrong

    - #### distributionForInstance

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

      Returns class probabilities for a weighted instance.
      Throws:
        `java.lang.Exception` - if something goes wrong

    - #### weight

          public double weight(Instance instance)
                        throws java.lang.Exception

      Returns the weight a rule assigns to an instance.
      Throws:
        `java.lang.Exception` - if something goes wrong

    - #### cleanup

          public final void cleanup(Instances justHeaderInfo)

      Cleanup in order to save memory.

    - #### toString

          public java.lang.String toString()

      Prints rules.
      Overrides:
        `toString` in class `java.lang.Object`

    - #### chooseIndex

          public final int chooseIndex()

      Method for choosing a subset to expand.

    - #### chooseLastIndex

          public final int chooseLastIndex()

      Choose last index (ie. choose rule).

    - #### getRevision

          public java.lang.String getRevision()

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