de.lmu.ifi.dbs.elki.index.projected

Class ProjectedIndex.ProjectedKNNQuery<D extends Distance<D>>

java.lang.Object

de.lmu.ifi.dbs.elki.index.projected.ProjectedIndex.ProjectedKNNQuery<D>

Type Parameters:

D - Distance type

All Implemented Interfaces:

DatabaseQuery, KNNQuery<O,D>

Enclosing class:

ProjectedIndex<O,I>

 class ProjectedIndex.ProjectedKNNQuery<D extends Distance<D>>
extends Object
implements KNNQuery<O,D>

Class to proxy kNN queries.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) DistanceQuery<O,D>	distq Distance query for refinement.
(package private) KNNQuery<I,D>	inner Inner kNN query.

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
ProjectedIndex.ProjectedKNNQuery(DistanceQuery<O,D> distanceQuery, KNNQuery<I,D> inner) Constructor.

Method Summary

Methods

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

inner

KNNQuery<I,D extends Distance<D>> inner

Inner kNN query.

distq

DistanceQuery<O,D extends Distance<D>> distq

Distance query for refinement.

Constructor Detail

ProjectedIndex.ProjectedKNNQuery

public ProjectedIndex.ProjectedKNNQuery(DistanceQuery<O,D> distanceQuery,
                                KNNQuery<I,D> inner)

Constructor.

Parameters:

inner - Inner kNN query.

Method Detail

getKNNForDBID

public KNNList<D> 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,D extends Distance<D>>

Parameters:

id - query object ID

k - Number of neighbors requested

Returns:

neighbors

getKNNForBulkDBIDs

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

Description copied from interface: KNNQuery

Bulk query method

Specified by:

getKNNForBulkDBIDs in interface KNNQuery<O,D extends Distance<D>>

Parameters:

ids - query object IDs

k - Number of neighbors requested

Returns:

neighbors

getKNNForObject

public KNNList<D> 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,D extends Distance<D>>

Parameters:

obj - Query object

k - Number of neighbors requested

Returns:

neighbors