weka.core.neighboursearch.balltrees

Class PointsClosestToFurthestChildren

java.lang.Object

weka.core.neighboursearch.balltrees.BallSplitter

weka.core.neighboursearch.balltrees.PointsClosestToFurthestChildren

All Implemented Interfaces:

java.io.Serializable, OptionHandler, RevisionHandler, TechnicalInformationHandler

public class PointsClosestToFurthestChildren
extends BallSplitter
implements TechnicalInformationHandler

Implements the Moore's method to split a node of a ball tree.

For more information please see section 2 of the 1st and 3.2.3 of the 2nd:

Andrew W. Moore: The Anchors Hierarchy: Using the Triangle Inequality to Survive High Dimensional Data. In: UAI '00: Proceedings of the 16th Conference on Uncertainty in Artificial Intelligence, San Francisco, CA, USA, 397-405, 2000.

Ashraf Masood Kibriya (2007). Fast Algorithms for Nearest Neighbour Search. Hamilton, New Zealand.

BibTeX:

 @inproceedings{Moore2000,
    address = {San Francisco, CA, USA},
    author = {Andrew W. Moore},
    booktitle = {UAI '00: Proceedings of the 16th Conference on Uncertainty in Artificial Intelligence},
    pages = {397-405},
    publisher = {Morgan Kaufmann Publishers Inc.},
    title = {The Anchors Hierarchy: Using the Triangle Inequality to Survive High Dimensional Data},
    year = {2000}
 }
 
 @mastersthesis{Kibriya2007,
    address = {Hamilton, New Zealand},
    author = {Ashraf Masood Kibriya},
    school = {Department of Computer Science, School of Computing and Mathematical Sciences, University of Waikato},
    title = {Fast Algorithms for Nearest Neighbour Search},
    year = {2007}
 }
 

Version:

$Revision: 10203 $

Author:

Ashraf M. Kibriya (amk14[at-the-rate]cs[dot]waikato[dot]ac[dot]nz)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PointsClosestToFurthestChildren() Constructor.
PointsClosestToFurthestChildren(int[] instList, Instances insts, EuclideanDistance e) Constructor.

Method Summary

Modifier and Type	Method and Description
java.lang.String	getRevision() Returns the revision string.
TechnicalInformation	getTechnicalInformation() Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on.
java.lang.String	globalInfo() Returns a string describing this object.
void	splitNode(BallNode node, int numNodesCreated) Splits a ball into two.

Methods inherited from class weka.core.neighboursearch.balltrees.BallSplitter

getOptions, listOptions, setEuclideanDistanceFunction, setInstanceList, setInstances, setOptions

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface weka.core.OptionHandler

makeCopy

Constructor Detail

PointsClosestToFurthestChildren

public PointsClosestToFurthestChildren()

Constructor.

PointsClosestToFurthestChildren

public PointsClosestToFurthestChildren(int[] instList,
                                       Instances insts,
                                       EuclideanDistance e)

Constructor.

Parameters:

instList - The master index array.

insts - The instances on which the tree is (or is to be) built.

e - The Euclidean distance function to use for splitting.

Method Detail

globalInfo

public java.lang.String globalInfo()

Returns a string describing this object.

Returns:

A description of the algorithm for displaying in the explorer/experimenter gui.

getTechnicalInformation

public TechnicalInformation getTechnicalInformation()

Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on.

Specified by:

getTechnicalInformation in interface TechnicalInformationHandler

Returns:

The technical information about this class.

splitNode

public void splitNode(BallNode node,
                      int numNodesCreated)
               throws java.lang.Exception

Splits a ball into two.

Specified by:

splitNode in class BallSplitter

Parameters:

node - The node to split.

numNodesCreated - The number of nodes that so far have been created for the tree, so that the newly created nodes are assigned correct/meaningful node numbers/ids.

Throws:

java.lang.Exception - If there is some problem in splitting the given node.

getRevision

public java.lang.String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Overrides:

getRevision in class BallSplitter

Returns:

the revision