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

java.lang.Object
  de.lmu.ifi.dbs.elki.logging.AbstractLoggable
      de.lmu.ifi.dbs.elki.utilities.referencepoints.StarBasedReferencePoints<O>

Type Parameters:

O - Object type

All Implemented Interfaces:

Parameterizable, ReferencePointsHeuristic<O>

public class StarBasedReferencePoints<O extends NumberVector<O,?>>
extends AbstractLoggable
implements ReferencePointsHeuristic<O>

Star-based strategy to pick reference points.

Author:

Erich Schubert

Field Summary

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

Fields inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debug, logger

Constructor Summary

StarBasedReferencePoints(Parameterization config)
Constructor, adhering to Parameterizable

Method Summary

Collection<O>

getReferencePoints(Database<O> db) Get the reference points for the given database.

Methods inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debugFine, debugFiner, debugFinest, exception, progress, verbose, warning

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

OptionID for NOCENTER_FLAG

NOCENTER_FLAG

private final Flag NOCENTER_FLAG

Parameter to specify the grid resolution.

Key: -star.nocenter

SCALE_ID

public static final OptionID SCALE_ID

OptionID for SCALE_PARAM

SCALE_PARAM

private final DoubleParameter SCALE_PARAM

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_FLAG.

scale

protected double scale

Holds the value of SCALE_PARAM.

Constructor Detail

StarBasedReferencePoints

public StarBasedReferencePoints(Parameterization config)

Constructor, adhering to Parameterizable

Parameters:

config - Parameterization

Method Detail

getReferencePoints

public Collection<O> getReferencePoints(Database<O> db)

Description copied from interface: ReferencePointsHeuristic

Get the reference points for the given database.

Specified by:

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

Parameters:

db - Database

Returns:

Collection of reference points.