de.lmu.ifi.dbs.elki.utilities.referencepoints

Class RandomSampleReferencePoints

java.lang.Object

de.lmu.ifi.dbs.elki.utilities.referencepoints.RandomSampleReferencePoints

All Implemented Interfaces:

ReferencePointsHeuristic

public class RandomSampleReferencePoints
extends Object
implements ReferencePointsHeuristic

Random-Sampling strategy for picking reference points.

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RandomSampleReferencePoints.Parameterizer Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
protected RandomFactory	rnd Random generator.
protected int	samplesize Sample size.

Constructor Summary

Constructors

Constructor and Description
RandomSampleReferencePoints(int samplesize, RandomFactory rnd) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
Collection<? extends NumberVector>	getReferencePoints(Relation<? extends NumberVector> db) Get the reference points for the given database.

Methods inherited from class java.lang.Object

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

Field Detail

samplesize

protected int samplesize

Sample size.

rnd

protected RandomFactory rnd

Random generator.

Constructor Detail

RandomSampleReferencePoints

public RandomSampleReferencePoints(int samplesize,
                           RandomFactory rnd)

Constructor.

Parameters:

samplesize - Sampling size

Method Detail

getReferencePoints

public Collection<? extends NumberVector> getReferencePoints(Relation<? extends NumberVector> db)

Description copied from interface: ReferencePointsHeuristic

Get the reference points for the given database.

Specified by:

getReferencePoints in interface ReferencePointsHeuristic

Parameters:

db - Database

Returns:

Collection of reference points.