de.lmu.ifi.dbs.elki.algorithm.clustering.em

Class SphericalGaussianModelFactory<V extends NumberVector>

java.lang.Object

de.lmu.ifi.dbs.elki.algorithm.clustering.em.AbstractEMModelFactory<V,EMModel>

de.lmu.ifi.dbs.elki.algorithm.clustering.em.SphericalGaussianModelFactory<V>

Type Parameters:

V - vector type

All Implemented Interfaces:

EMClusterModelFactory<V,EMModel>

public class SphericalGaussianModelFactory<V extends NumberVector>
extends AbstractEMModelFactory<V,EMModel>

Factory for EM with multivariate gaussian models using diagonal matrixes. These models have individual variances, but no covariance, so this corresponds to the 'VVI' model in Mclust (R).

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SphericalGaussianModelFactory.Parameterizer<V extends NumberVector> Parameterization class

Field Summary

Fields inherited from class de.lmu.ifi.dbs.elki.algorithm.clustering.em.AbstractEMModelFactory

initializer

Constructor Summary

Constructors

Constructor and Description
SphericalGaussianModelFactory(KMeansInitialization<V> initializer) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
List<SphericalGaussianModel>	buildInitialModels(Database database, Relation<V> relation, int k, NumberVectorDistanceFunction<? super V> df) Build the initial models

Methods inherited from class java.lang.Object

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

Constructor Detail

SphericalGaussianModelFactory

public SphericalGaussianModelFactory(KMeansInitialization<V> initializer)

Constructor.

Parameters:

initializer - Class for choosing the inital seeds.

Method Detail

buildInitialModels

public List<SphericalGaussianModel> buildInitialModels(Database database,
                                              Relation<V> relation,
                                              int k,
                                              NumberVectorDistanceFunction<? super V> df)

Description copied from interface: EMClusterModelFactory

Build the initial models

Parameters:

database - Database

relation - Relation

k - Number of clusters

df - Distance function

Returns:

Initial models