Package elki.database.query.distance

Class SpatialPrimitiveDistanceQuery<V extends SpatialComparable>

java.lang.Object

elki.database.query.distance.PrimitiveDistanceQuery<V>

elki.database.query.distance.SpatialPrimitiveDistanceQuery<V>

Type Parameters:

V - Vector type to use

All Implemented Interfaces:

DistanceQuery<V>, SpatialDistanceQuery<V>

Direct Known Subclasses:

SpatialPrimitiveDistanceSimilarityQuery

public class SpatialPrimitiveDistanceQuery<V extends SpatialComparable>
extends PrimitiveDistanceQuery<V>
implements SpatialDistanceQuery<V>

Distance query for spatial distance functions

Since:

0.4.0

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field	Description
protected SpatialPrimitiveDistance<? super V>	distanceFunction	The distance function we use.

Fields inherited from class elki.database.query.distance.PrimitiveDistanceQuery

relation

Constructor Summary

Constructors

Constructor	Description
SpatialPrimitiveDistanceQuery(Relation<? extends V> relation, SpatialPrimitiveDistance<? super V> distanceFunction)

Method Summary

Modifier and Type	Method	Description
SpatialPrimitiveDistance<? super V>	getDistance()	Get the inner distance function.
double	minDist(SpatialComparable mbr, DBIDRef id)	Computes the minimum distance between the given MBR and the FeatureVector object according to this distance function.
double	minDist(SpatialComparable mbr, V v)	Computes the minimum distance between the given MBR and the FeatureVector object according to this distance function.

Methods inherited from class elki.database.query.distance.PrimitiveDistanceQuery

distance, distance, distance, distance, getRelation

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface elki.database.query.distance.DistanceQuery

distance, distance, distance, distance, getRelation

Field Detail

distanceFunction

protected final SpatialPrimitiveDistance<? super V extends SpatialComparable> distanceFunction

The distance function we use.

Constructor Detail

SpatialPrimitiveDistanceQuery

public SpatialPrimitiveDistanceQuery(Relation<? extends V> relation,
                                     SpatialPrimitiveDistance<? super V> distanceFunction)

Parameters:

relation - Representation to use

distanceFunction - Distance function to use

Method Detail

minDist

public double minDist(SpatialComparable mbr,
                      V v)

Description copied from interface: SpatialDistanceQuery

Computes the minimum distance between the given MBR and the FeatureVector object according to this distance function.

Specified by:

minDist in interface SpatialDistanceQuery<V extends SpatialComparable>

Parameters:

mbr - the MBR object

v - the FeatureVector object

Returns:

the minimum distance between the given MBR and the FeatureVector object according to this distance function

minDist

public double minDist(SpatialComparable mbr,
                      DBIDRef id)

Description copied from interface: SpatialDistanceQuery

Computes the minimum distance between the given MBR and the FeatureVector object according to this distance function.

Specified by:

minDist in interface SpatialDistanceQuery<V extends SpatialComparable>

Parameters:

mbr - the MBR object

id - the query object id

Returns:

the minimum distance between the given MBR and the FeatureVector object according to this distance function

getDistance

public SpatialPrimitiveDistance<? super V> getDistance()

Description copied from interface: DistanceQuery

Get the inner distance function.

Specified by:

getDistance in interface DistanceQuery<V extends SpatialComparable>

Specified by:

getDistance in interface SpatialDistanceQuery<V extends SpatialComparable>

Overrides:

getDistance in class PrimitiveDistanceQuery<V extends SpatialComparable>

Returns:

Distance function