ActiveHNode

java.lang.Object
- weka.classifiers.trees.ht.HNode
- - weka.classifiers.trees.ht.LeafNode
  - - weka.classifiers.trees.ht.ActiveHNode

All Implemented Interfaces:

java.io.Serializable, LearningNode

Direct Known Subclasses:

NBNode
```
public class ActiveHNode
extends LeafNode
implements LearningNode, java.io.Serializable
```
Node that is "active" (i.e. growth can occur) in a Hoeffding tree

Version:

$Revision: 9705 $

Author:

Richard Kirkby (rkirkby@cs.waikato.ac.nz), Mark Hall (mhall{[at]}pentaho{[dot]}com)

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

double m_weightSeenAtLastSplitEval
The weight of instances seen at the last split evaluation
- Fields inherited from class weka.classifiers.trees.ht.LeafNode
  m_parentBranch, m_parentNode, m_theNode
- Fields inherited from class weka.classifiers.trees.ht.HNode
  m_classDistribution

Constructor Summary

Constructors
Constructor Description

ActiveHNode()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.util.List<SplitCandidate>`	`getPossibleSplits(SplitMetric splitMetric)`	Returns a list of split candidates
`void`	`updateNode(Instance inst)`	Update the node with the supplied instance

Methods inherited from class weka.classifiers.trees.ht.HNode
classDistributionIsPure, getDistribution, graphTree, installNodeNums, isLeaf, leafForInstance, numEntriesInClassDistribution, toString, totalWeight, updateDistribution

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

- Field Detail
  - m_weightSeenAtLastSplitEval
```
public double m_weightSeenAtLastSplitEval
```
    The weight of instances seen at the last split evaluation
- Constructor Detail
  - ActiveHNode
```
public ActiveHNode()
```
- Method Detail
  - updateNode
```
public void updateNode(Instance inst)
                throws java.lang.Exception
```
    Description copied from class: HNode
    
    Update the node with the supplied instance
    
    Overrides:
    
    updateNode in class LeafNode
    
    Parameters:
    
    inst - the instance to update with
    
    Throws:
    
    java.lang.Exception - if a problem occurs
  - getPossibleSplits
```
public java.util.List<SplitCandidate> getPossibleSplits(SplitMetric splitMetric)
```
    Returns a list of split candidates
    
    Parameters:
    
    splitMetric - the splitting metric to use
    
    Returns:
    
    a list of split candidates