C45PruneableDecList (weka-dev 3.9.7 API)

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

All Implemented Interfaces:

Serializable, RevisionHandler
```
public class C45PruneableDecList
extends ClassifierDecList
```
Class for handling a partial tree structure pruned using C4.5's pruning heuristic.

Version:

$Revision$

Author:

Eibe Frank (eibe@cs.waikato.ac.nz)

See Also:

Serialized Form

Constructor Summary

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

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`buildDecList(Instances data, boolean leaf)`	Builds the partial tree without hold out set.
`double`	`getEstimatedErrorsForLeaf()`	Computes estimated errors for leaf.
`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 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:
    
    Exception - if something goes wrong
- Method Detail
  - buildDecList
```
public void buildDecList(Instances data,
                         boolean leaf)
                  throws Exception
```
    Builds the partial tree without hold out set.
    
    Overrides:
    
    buildDecList in class ClassifierDecList
    
    Throws:
    
    Exception - if something goes wrong
  - getEstimatedErrorsForLeaf
```
public double getEstimatedErrorsForLeaf()
```
    Computes estimated errors for leaf.
  - getRevision
```
public String getRevision()
```
    Returns the revision string.
    
    Specified by:
    
    getRevision in interface RevisionHandler
    
    Overrides:
    
    getRevision in class ClassifierDecList
    
    Returns:
    
    the revision