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

Class RandomGeneratedReferencePoints

java.lang.Object

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

All Implemented Interfaces:

ReferencePointsHeuristic

public class RandomGeneratedReferencePoints
extends java.lang.Object
implements ReferencePointsHeuristic

Reference points generated randomly within the used data space.

Since:

0.3

Author:

Erich Schubert

Nested Class Summary

Nested Classes

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

Field Summary

Fields

Modifier and Type	Field and Description
protected RandomFactory	rnd Random generator.
protected int	samplesize Holds the sample size.
protected double	scale Holds the scaling factor.

Constructor Summary

Constructors

Constructor and Description
RandomGeneratedReferencePoints(int samplesize, double scale, RandomFactory rnd) Constructor.

Method Summary

Modifier and Type	Method and Description
java.util.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

Holds the sample size.

scale

protected double scale

Holds the scaling factor.

rnd

protected RandomFactory rnd

Random generator.

Constructor Detail

RandomGeneratedReferencePoints

public RandomGeneratedReferencePoints(int samplesize,
                                      double scale,
                                      RandomFactory rnd)

Constructor.

Parameters:

samplesize - Size of desired sample set

scale - Scaling factor

rnd - Random generator

Method Detail

getReferencePoints

public java.util.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.