de.lmu.ifi.dbs.elki.database.query.distance

Class SpatialPrimitiveDistanceQuery<V extends SpatialComparable>

java.lang.Object

de.lmu.ifi.dbs.elki.database.query.distance.PrimitiveDistanceQuery<V>

de.lmu.ifi.dbs.elki.database.query.distance.SpatialPrimitiveDistanceQuery<V>

Type Parameters:

V - Vector type to use

All Implemented Interfaces:

DatabaseQuery, 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 and Description
protected SpatialPrimitiveDistanceFunction<? super V>	distanceFunction The distance function we use.

Fields inherited from class de.lmu.ifi.dbs.elki.database.query.distance.PrimitiveDistanceQuery

relation

Fields inherited from interface de.lmu.ifi.dbs.elki.database.query.DatabaseQuery

HINT_BULK, HINT_EXACT, HINT_HEAVY_USE, HINT_NO_CACHE, HINT_OPTIMIZED_ONLY, HINT_SINGLE

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
SpatialPrimitiveDistanceFunction<? super V>	getDistanceFunction() 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 de.lmu.ifi.dbs.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 de.lmu.ifi.dbs.elki.database.query.distance.DistanceQuery

distance, distance, distance, distance, getRelation

Field Detail

distanceFunction

protected final SpatialPrimitiveDistanceFunction<? super V extends SpatialComparable> distanceFunction

The distance function we use.

Constructor Detail

SpatialPrimitiveDistanceQuery

public SpatialPrimitiveDistanceQuery(Relation<? extends V> relation,
                                     SpatialPrimitiveDistanceFunction<? 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

getDistanceFunction

public SpatialPrimitiveDistanceFunction<? super V> getDistanceFunction()

Description copied from interface: DistanceQuery

Get the inner distance function.

Specified by:

getDistanceFunction in interface DistanceQuery<V extends SpatialComparable>

Specified by:

getDistanceFunction in interface SpatialDistanceQuery<V extends SpatialComparable>

Overrides:

getDistanceFunction in class PrimitiveDistanceQuery<V extends SpatialComparable>

Returns:

Distance function