de.lmu.ifi.dbs.elki.utilities.referencepoints
Class RandomGeneratedReferencePoints<V extends NumberVector<V,?>>

java.lang.Object
  de.lmu.ifi.dbs.elki.utilities.referencepoints.RandomGeneratedReferencePoints<V>

Type Parameters:

V - Object type

All Implemented Interfaces:

InspectionUtilFrequentlyScanned, Parameterizable, ReferencePointsHeuristic<V>

public class RandomGeneratedReferencePoints<V extends NumberVector<V,?>>
extends Object
implements ReferencePointsHeuristic<V>

Reference points generated randomly within the used data space.

Nested Class Summary

static class

RandomGeneratedReferencePoints.Parameterizer<V extends NumberVector<V,?>> Parameterization class.

Field Summary

static OptionID	N_ID Parameter to specify the number of requested reference points.
protected int	samplesize Holds the value of N_ID.
protected double	scale Holds the value of SCALE_ID.
static OptionID	SCALE_ID Parameter for additional scaling of the space, to allow out-of-space reference points.

Constructor Summary

RandomGeneratedReferencePoints(int samplesize, double scale)
Constructor.

Method Summary

<T extends V> Collection<V>

getReferencePoints(Relation<T> 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

N_ID

public static final OptionID N_ID

Parameter to specify the number of requested reference points.

Key: -generate.n

SCALE_ID

public static final OptionID SCALE_ID

Parameter for additional scaling of the space, to allow out-of-space reference points.

Key: -generate.scale

samplesize

protected int samplesize

Holds the value of N_ID.

scale

protected double scale

Holds the value of SCALE_ID.

Constructor Detail

RandomGeneratedReferencePoints

public RandomGeneratedReferencePoints(int samplesize,
                                      double scale)

Constructor.

Parameters:

samplesize -

scale -

Method Detail

getReferencePoints

public <T extends V> Collection<V> getReferencePoints(Relation<T> db)

Description copied from interface: ReferencePointsHeuristic

Get the reference points for the given database.

Specified by:

getReferencePoints in interface ReferencePointsHeuristic<V extends NumberVector<V,?>>

Parameters:

db - Database

Returns:

Collection of reference points.