de.lmu.ifi.dbs.elki.index.preprocessed.knn

Class SpacefillingKNNPreprocessor.SpaceFillingKNNQuery

java.lang.Object

de.lmu.ifi.dbs.elki.index.preprocessed.knn.SpacefillingKNNPreprocessor.SpaceFillingKNNQuery

All Implemented Interfaces:

DatabaseQuery, KNNQuery<O>

Enclosing class:

SpacefillingKNNPreprocessor<O extends NumberVector>

protected class SpacefillingKNNPreprocessor.SpaceFillingKNNQuery
extends Object
implements KNNQuery<O>

KNN Query processor for space filling curves

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
(package private) DistanceQuery<O>	distq Distance query to use for refinement

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
SpaceFillingKNNQuery(DistanceQuery<O> distanceQuery) Constructor.

Method Summary

Modifier and Type	Method and Description
List<KNNList>	getKNNForBulkDBIDs(ArrayDBIDs ids, int k) Bulk query method
KNNList	getKNNForDBID(DBIDRef id, int k) Get the k nearest neighbors for a particular id.
KNNList	getKNNForObject(O obj, int k) Get the k nearest neighbors for a particular id.

Methods inherited from class java.lang.Object

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

Field Detail

distq

DistanceQuery<O extends NumberVector> distq

Distance query to use for refinement

Constructor Detail

SpaceFillingKNNQuery

public SpaceFillingKNNQuery(DistanceQuery<O> distanceQuery)

Constructor.

Parameters:

distanceQuery - Distance query to use for refinement

Method Detail

getKNNForDBID

public KNNList getKNNForDBID(DBIDRef id,
                             int k)

Description copied from interface: KNNQuery

Get the k nearest neighbors for a particular id.

Specified by:

getKNNForDBID in interface KNNQuery<O extends NumberVector>

Parameters:

id - query object ID

k - Number of neighbors requested

Returns:

neighbors

getKNNForBulkDBIDs

public List<KNNList> getKNNForBulkDBIDs(ArrayDBIDs ids,
                                        int k)

Description copied from interface: KNNQuery

Bulk query method

Specified by:

getKNNForBulkDBIDs in interface KNNQuery<O extends NumberVector>

Parameters:

ids - query object IDs

k - Number of neighbors requested

Returns:

neighbors

getKNNForObject

public KNNList getKNNForObject(O obj,
                               int k)

Description copied from interface: KNNQuery

Get the k nearest neighbors for a particular id.

Specified by:

getKNNForObject in interface KNNQuery<O extends NumberVector>

Parameters:

obj - Query object

k - Number of neighbors requested

Returns:

neighbors