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

Class ProjectedIndex.ProjectedRKNNQuery

java.lang.Object

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

All Implemented Interfaces:

DatabaseQuery, RKNNQuery<O>

Enclosing class:

ProjectedIndex<O,I>

class ProjectedIndex.ProjectedRKNNQuery
extends Object
implements RKNNQuery<O>

Class to proxy RkNN queries.

Author:

Erich Schubert

Field Summary

Fields

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

Method Summary

Modifier and Type	Method and Description
List<? extends DoubleDBIDList>	getRKNNForBulkDBIDs(ArrayDBIDs ids, int k) Bulk query method for reverse k nearest neighbors for ids.
DoubleDBIDList	getRKNNForDBID(DBIDRef id, int k) Get the reverse k nearest neighbors for a particular id.
DoubleDBIDList	getRKNNForObject(O obj, int k) Get the reverse k nearest neighbors for a particular object.

Methods inherited from class java.lang.Object

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

Field Detail

inner

RKNNQuery<I> inner

Inner RkNN query.

distq

DistanceQuery<O> distq

Distance query for refinement.

Constructor Detail

ProjectedRKNNQuery

public ProjectedRKNNQuery(DistanceQuery<O> distanceQuery,
                          RKNNQuery<I> inner)

Constructor.

Parameters:

inner - Inner RkNN query.

Method Detail

getRKNNForDBID

public DoubleDBIDList getRKNNForDBID(DBIDRef id,
                                     int k)

Description copied from interface: RKNNQuery

Get the reverse k nearest neighbors for a particular id.

Specified by:

getRKNNForDBID in interface RKNNQuery<O>

Parameters:

id - query object ID

k - number of neighbors requested

Returns:

reverse k nearest neighbors

getRKNNForObject

public DoubleDBIDList getRKNNForObject(O obj,
                                       int k)

Description copied from interface: RKNNQuery

Get the reverse k nearest neighbors for a particular object.

Specified by:

getRKNNForObject in interface RKNNQuery<O>

Parameters:

obj - query object instance

k - number of neighbors requested

Returns:

reverse k nearest neighbors

getRKNNForBulkDBIDs

public List<? extends DoubleDBIDList> getRKNNForBulkDBIDs(ArrayDBIDs ids,
                                                          int k)

Description copied from interface: RKNNQuery

Bulk query method for reverse k nearest neighbors for ids.

Specified by:

getRKNNForBulkDBIDs in interface RKNNQuery<O>

Parameters:

ids - query object IDs

k - number of neighbors requested

Returns:

reverse k nearest neighbors