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

Class RandomlyGeneratedInitialMeans<V extends NumberVector<?>>

java.lang.Object

de.lmu.ifi.dbs.elki.algorithm.clustering.kmeans.AbstractKMeansInitialization<V>

de.lmu.ifi.dbs.elki.algorithm.clustering.kmeans.RandomlyGeneratedInitialMeans<V>

Type Parameters:

V - Vector type

All Implemented Interfaces:

KMeansInitialization<V>

public class RandomlyGeneratedInitialMeans<V extends NumberVector<?>>
extends AbstractKMeansInitialization<V>

Initialize k-means by generating random vectors (within the data sets value range).

Nested Class Summary

Nested Classes

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

Field Summary

Fields inherited from class de.lmu.ifi.dbs.elki.algorithm.clustering.kmeans.AbstractKMeansInitialization

rnd

Constructor Summary

Constructors

Constructor and Description
RandomlyGeneratedInitialMeans(RandomFactory rnd) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
List<V>	chooseInitialMeans(Database database, Relation<V> relation, int k, PrimitiveDistanceFunction<? super NumberVector<?>,?> distanceFunction) Choose initial means

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomlyGeneratedInitialMeans

public RandomlyGeneratedInitialMeans(RandomFactory rnd)

Constructor.

Parameters:

rnd - Random generator.

Method Detail

chooseInitialMeans

public List<V> chooseInitialMeans(Database database,
                         Relation<V> relation,
                         int k,
                         PrimitiveDistanceFunction<? super NumberVector<?>,?> distanceFunction)

Description copied from interface: KMeansInitialization

Choose initial means

Parameters:

database - Database context

relation - Relation

k - Parameter k

distanceFunction - Distance function

Returns:

List of chosen means for k-means