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

Class ProjectedIndex.ProjectedKNNQuery

java.lang.Object

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

All Implemented Interfaces:

DatabaseQuery, KNNQuery<O>

Enclosing class:

ProjectedIndex<O,I>

class ProjectedIndex.ProjectedKNNQuery
extends Object
implements KNNQuery<O>

Class to proxy kNN queries.

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
(package private) DistanceQuery<O>	distq Distance query for refinement.
(package private) KNNQuery<I>	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
ProjectedKNNQuery(DistanceQuery<O> distanceQuery, KNNQuery<I> inner) Constructor.

Method Summary

Modifier and Type	Method and Description
List<? extends 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

inner

KNNQuery<I> inner

Inner kNN query.

distq

DistanceQuery<O> distq

Distance query for refinement.

Constructor Detail

ProjectedKNNQuery

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

Constructor.

Parameters:

inner - Inner kNN query.

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>

Parameters:

id - query object ID

k - Number of neighbors requested

Returns:

neighbors

getKNNForBulkDBIDs

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

Description copied from interface: KNNQuery

Bulk query method

Specified by:

getKNNForBulkDBIDs in interface KNNQuery<O>

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>

Parameters:

obj - Query object

k - Number of neighbors requested

Returns:

neighbors