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## weka.classifiers.rules.part
Class C45PruneableDecList

    java.lang.Object
      weka.classifiers.rules.part.ClassifierDecList
          weka.classifiers.rules.part.C45PruneableDecList

All Implemented Interfaces:
  java.io.Serializable, RevisionHandler

    public class C45PruneableDecList

extends ClassifierDecList

Class for handling a partial tree structure pruned using C4.5's pruning heuristic.

Version:
  $Revision: 1.9 $
Author:
  Eibe Frank (eibe@cs.waikato.ac.nz)
See Also:
  Serialized Form

Constructor Summary
`C45PruneableDecList(ModelSelection toSelectLocModel, double cf, int minNum)` Constructor for pruneable tree structure.

Method Summary
`void` | `buildDecList(Instances data, boolean leaf)` Builds the partial tree without hold out set.
`double` | `getEstimatedErrorsForLeaf()` Computes estimated errors for leaf.
`java.lang.String` | `getRevision()` Returns the revision string.

Methods inherited from class weka.classifiers.rules.part.ClassifierDecList
`buildRule, chooseIndex, chooseLastIndex, classifyInstance, cleanup, distributionForInstance, toString, weight`

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

Constructor Detail

### C45PruneableDecList

    public C45PruneableDecList(ModelSelection toSelectLocModel,
                               double cf,
                               int minNum)
                        throws java.lang.Exception

  Constructor for pruneable tree structure. Stores reference to associated training data at each node.

  Parameters:
    `toSelectLocModel` - selection method for local splitting model
    `cf` - the confidence factor for pruning
    `minNum` - the minimum number of objects in a leaf
  Throws:
    `java.lang.Exception` - if something goes wrong

Method Detail

### buildDecList

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

  Builds the partial tree without hold out set.

  Overrides:
    `buildDecList` in class `ClassifierDecList`
  Throws:
    `java.lang.Exception` - if something goes wrong

### getEstimatedErrorsForLeaf

    public double getEstimatedErrorsForLeaf()

  Computes estimated errors for leaf.

### getRevision

    public java.lang.String getRevision()

  Returns the revision string.

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

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