de.lmu.ifi.dbs.elki.database.query.rknn
Interface RKNNQuery<O,D extends Distance<D>>

Type Parameters:

O - Object type

D - Distance type

All Superinterfaces:

DatabaseQuery

All Known Implementing Classes:

AbstractRKNNQuery, LinearScanRKNNQuery, MkTreeRKNNQuery, PreprocessorRKNNQuery

public interface RKNNQuery<O,D extends Distance<D>>
extends DatabaseQuery

Abstract reverse kNN Query interface.

Field Summary

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

Method Summary

D	getDistanceFactory() Get the distance data type of the function.
Relation<? extends O>	getRelation() Access the underlying data query.
List<List<DistanceResultPair<D>>>	getRKNNForBulkDBIDs(ArrayDBIDs ids, int k) Bulk query method for reverse k nearest neighbors for ids.
List<DistanceResultPair<D>>	getRKNNForDBID(DBID id, int k) Get the reverse k nearest neighbors for a particular id.
List<DistanceResultPair<D>>	getRKNNForObject(O obj, int k) Get the reverse k nearest neighbors for a particular object.

Method Detail

getRKNNForDBID

List<DistanceResultPair<D>> getRKNNForDBID(DBID id,
                                           int k)

Get the reverse k nearest neighbors for a particular id.

Parameters:

id - query object ID

k - number of neighbors requested

Returns:

reverse k nearest neighbors

getRKNNForObject

List<DistanceResultPair<D>> getRKNNForObject(O obj,
                                             int k)

Get the reverse k nearest neighbors for a particular object.

Parameters:

obj - query object instance

k - number of neighbors requested

Returns:

reverse k nearest neighbors

getRKNNForBulkDBIDs

List<List<DistanceResultPair<D>>> getRKNNForBulkDBIDs(ArrayDBIDs ids,
                                                      int k)

Bulk query method for reverse k nearest neighbors for ids.

Parameters:

ids - query object IDs

k - number of neighbors requested

Returns:

reverse k nearest neighbors

getDistanceFactory

D getDistanceFactory()

Get the distance data type of the function.

getRelation

Relation<? extends O> getRelation()

Access the underlying data query.

Returns:

data query in use