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

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

Type Parameters:

V - Object type

All Implemented Interfaces:

InspectionUtilFrequentlyScanned, Parameterizable, ReferencePointsHeuristic<V>

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

Star-based strategy to pick reference points.

Nested Class Summary

static class

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

Field Summary

protected boolean	nocenter Holds the value of NOCENTER_ID.
static OptionID	NOCENTER_ID Parameter to specify the grid resolution.
protected double	scale Holds the value of SCALE_ID.
static OptionID	SCALE_ID Parameter to specify the extra scaling of the space, to allow out-of-data-space reference points.

Constructor Summary

StarBasedReferencePoints(boolean nocenter, 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

NOCENTER_ID

public static final OptionID NOCENTER_ID

Parameter to specify the grid resolution.

Key: -star.nocenter

SCALE_ID

public static final OptionID SCALE_ID

Parameter to specify the extra scaling of the space, to allow out-of-data-space reference points.

Key: -star.scale

nocenter

protected boolean nocenter

Holds the value of NOCENTER_ID.

scale

protected double scale

Holds the value of SCALE_ID.

Constructor Detail

StarBasedReferencePoints

public StarBasedReferencePoints(boolean nocenter,
                                double scale)

Constructor.

Parameters:

nocenter -

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.