Package elki.clustering.hierarchical

Class MiniMaxAnderberg.Instance

java.lang.Object

elki.clustering.hierarchical.AGNES.Instance

elki.clustering.hierarchical.MiniMax.Instance

elki.clustering.hierarchical.MiniMaxAnderberg.Instance

Enclosing class:

MiniMaxAnderberg<O>

public static class MiniMaxAnderberg.Instance
extends MiniMax.Instance

Main worker instance of MiniMax.

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field	Description
protected double[]	bestd	Cache: best distance
protected int[]	besti	Cache: index of best distance

Fields inherited from class elki.clustering.hierarchical.MiniMax.Instance

clusters, dq, ix, iy, protiter

Fields inherited from class elki.clustering.hierarchical.AGNES.Instance

builder, end, linkage, mat

Constructor Summary

Constructors

Constructor	Description
Instance()

Method Summary

Modifier and Type	Method	Description
protected int	findMerge()	Perform the next merge step in AGNES.
protected void	merge(int x, int y)	Merges two clusters given by x, y, their points with smallest IDs, and y to keep
ClusterPrototypeMergeHistory	run(elki.database.ids.ArrayDBIDs ids, ClusterDistanceMatrix mat, ClusterMergeHistoryBuilder builder, elki.database.query.distance.DistanceQuery<?> dq, elki.database.ids.DBIDArrayMIter prots)
private void	updateMatrices(int x, int y)	Update the entries of the matrices that contain a distance to y, the newly merged cluster.

Methods inherited from class elki.clustering.hierarchical.MiniMax.Instance

run, updateEntry, updateMatrices

Methods inherited from class elki.clustering.hierarchical.AGNES.Instance

merge, shrinkActiveSet, updateMatrix

Methods inherited from class java.lang.Object

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

Field Detail

bestd

protected double[] bestd

Cache: best distance

besti

protected int[] besti

Cache: index of best distance

Constructor Detail

Instance

public Instance()

Method Detail

run

public ClusterPrototypeMergeHistory run(elki.database.ids.ArrayDBIDs ids,
                                        ClusterDistanceMatrix mat,
                                        ClusterMergeHistoryBuilder builder,
                                        elki.database.query.distance.DistanceQuery<?> dq,
                                        elki.database.ids.DBIDArrayMIter prots)

Overrides:

run in class MiniMax.Instance

findMerge

protected int findMerge()

Description copied from class: AGNES.Instance

Perform the next merge step in AGNES.

Overrides:

findMerge in class MiniMax.Instance

Returns:

the index that has disappeared, for shrinking the working set

merge

protected void merge(int x,
                     int y)

Description copied from class: MiniMax.Instance

Merges two clusters given by x, y, their points with smallest IDs, and y to keep

Overrides:

merge in class MiniMax.Instance

Parameters:

x - first cluster to merge

y - second cluster to merge

updateMatrices

private void updateMatrices(int x,
                            int y)

Update the entries of the matrices that contain a distance to y, the newly merged cluster.

Parameters:

x - first cluster to merge, with x > y

y - second cluster to merge, with y < x