idl.tmt.representation
Class DensityBasedClustering

java.lang.Object
  |
  +--idl.tmt.representation.DensityBasedClustering

All Implemented Interfaces:

Clustering, SoftClustering

public class DensityBasedClustering

extends java.lang.Object

implements SoftClustering

Created on Apr 14, 2004

Author:

jelsas

Inner Class Summary

private class

DensityBasedClustering.DensityBasedSoftCluster

Field Summary

private Cluster[]	clusters
private double[][]	clustersDocs
private IndexedCollection	collection
private double[][]	docsClusters
private HardClustering	hardCl

Constructor Summary

DensityBasedClustering(DensityBasedClusterer clusterer, IndexedCollection collection)

Method Summary

Cluster	getCluster(int clusterIndex) Gets the cluster corresponding to the given cluster index.
double[]	getClusterMembershipProbabilities(int docID) Gets the probabilities of cluster membership for the given document ID
int	getNumClusters() gets the number of clusters in this clustering.
int	getNumDocuments() Returns the number of documents in this clustering
HardClustering	toHardClustering() Converts this soft clustering to a hard clustering.

Methods inherited from class java.lang.Object

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

Field Detail

clusters

private Cluster[] clusters

docsClusters

private double[][] docsClusters

clustersDocs

private double[][] clustersDocs

hardCl

private HardClustering hardCl

collection

private IndexedCollection collection

Constructor Detail

DensityBasedClustering

public DensityBasedClustering(DensityBasedClusterer clusterer,
                              IndexedCollection collection)
                       throws java.lang.Exception

Method Detail

getClusterMembershipProbabilities

public double[] getClusterMembershipProbabilities(int docID)

Gets the probabilities of cluster membership for the given document ID

Specified by:

getClusterMembershipProbabilities in interface SoftClustering

See Also:

SoftClustering.getClusterMembershipProbabilities(int)

getNumClusters

public int getNumClusters()

gets the number of clusters in this clustering.

Specified by:

getNumClusters in interface Clustering

See Also:

Clustering.getNumClusters()

getCluster

public Cluster getCluster(int clusterIndex)

Gets the cluster corresponding to the given cluster index.

Specified by:

getCluster in interface Clustering

See Also:

Clustering.getCluster(int)

toHardClustering

public HardClustering toHardClustering()

Converts this soft clustering to a hard clustering.

Specified by:

toHardClustering in interface SoftClustering

See Also:

SoftClustering.toHardClustering()

getNumDocuments

public int getNumDocuments()

Returns the number of documents in this clustering

Specified by:

getNumDocuments in interface Clustering

See Also:

Clustering.getNumDocuments()