org.streaminer.stream.classifier.tree

Class HoeffdingTreeModel

java.lang.Object

org.streaminer.stream.classifier.tree.HoeffdingTreeModel

All Implemented Interfaces:

Serializable, DescriptionModel<String>, Model, PredictionModel<Data,Serializable>

public class HoeffdingTreeModel
extends Object
implements PredictionModel<Data,Serializable>, DescriptionModel<String>

Represents a Hoeffding Tree. The type of the nodes in this tree is HoeffdingTreeNode

Author:

Tobias Beckers

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
HoeffdingTreeModel(Map<String,Class<?>> featureTypes, Serializable label) Creates a new Hoeffding Tree containing only an empty root with an initial label. Defines a type for each feature.

Method Summary

Methods

Modifier and Type	Method and Description
String	describe() Returns a string representation of the current tree
HoeffdingTreeNode	getLeaf(Data example) Returns the leaf at which the path through the tree ends for the specified Example.
Class<?>	getType(String feature) Returns the FeatureType for the specified feature
Serializable	predict(Data example) Returns the predicted class label for the specified example
String	toString() Returns a string representation of the current tree

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

HoeffdingTreeModel

public HoeffdingTreeModel(Map<String,Class<?>> featureTypes,
                  Serializable label)

Creates a new Hoeffding Tree containing only an empty root with an initial label.
Defines a type for each feature.

Parameters:

featureTypes - a declaration of types for all features

label - an initial Label for the root

Method Detail

getType

public Class<?> getType(String feature)

Returns the FeatureType for the specified feature

Parameters:

feature - a feature which type is requested

Returns:

the FeatureType for the specified feature

predict

public Serializable predict(Data example)

Returns the predicted class label for the specified example

Specified by:

predict in interface PredictionModel<Data,Serializable>

Parameters:

example - an Example for which a prediction should be made

Returns:

the predicted class label for the specified example

getLeaf

public HoeffdingTreeNode getLeaf(Data example)

Returns the leaf at which the path through the tree ends for the specified Example.

Parameters:

example - an Example

Returns:

the reached leaf

describe

public String describe()

Returns a string representation of the current tree

Specified by:

describe in interface DescriptionModel<String>

Returns:

a string representation of the current tree

toString

public String toString()

Returns a string representation of the current tree

Overrides:

toString in class Object

Returns:

a string representation of the current tree