Package elki.utilities.referencepoints

Class AxisBasedReferencePoints

java.lang.Object

elki.utilities.referencepoints.AxisBasedReferencePoints

All Implemented Interfaces:

ReferencePointsHeuristic

public class AxisBasedReferencePoints
extends java.lang.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.

Since:

0.3

Author:

Erich Schubert

Nested Class Summary

Nested Classes

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

Field Summary

Fields

Modifier and Type	Field	Description
protected double	spacescale	Scaling factor.

Constructor Summary

Constructors

Constructor	Description
AxisBasedReferencePoints(double spacescale)	Constructor.

Method Summary

Modifier and Type	Method	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

spacescale

protected double spacescale

Scaling factor.

Constructor Detail

AxisBasedReferencePoints

public AxisBasedReferencePoints(double spacescale)

Constructor.

Parameters:

spacescale - Extra scaling

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.