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

Class AxisBasedReferencePoints

java.lang.Object

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

All Implemented Interfaces:

ReferencePointsHeuristic

public class AxisBasedReferencePoints
extends Object
implements ReferencePointsHeuristic

Strategy to pick reference points by placing them on the axis ends. This strategy produces n+2 reference points that lie on the edges of the surrounding cube.

Author:

Erich Schubert

Nested Class Summary

Nested Classes

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

Field Summary

Fields

Modifier and Type	Field and Description
protected double	spacescale Scaling factor.

Constructor Summary

Constructors

Constructor and Description
AxisBasedReferencePoints(double spacescale) 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

spacescale

protected double spacescale

Scaling factor.

Constructor Detail

AxisBasedReferencePoints

public AxisBasedReferencePoints(double spacescale)

Constructor.

Parameters:

spacescale - Extra scaling

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.