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

java.lang.Object
  de.lmu.ifi.dbs.elki.database.query.AbstractDataBasedQuery<O>
      de.lmu.ifi.dbs.elki.database.query.rknn.AbstractRKNNQuery<O,D>
          de.lmu.ifi.dbs.elki.database.query.rknn.LinearScanRKNNQuery<O,D>

Type Parameters:

O - Database object type

D - Distance type

All Implemented Interfaces:

DatabaseQuery, LinearScanQuery, RKNNQuery<O,D>

public class LinearScanRKNNQuery<O,D extends Distance<D>>
extends AbstractRKNNQuery<O,D>
implements LinearScanQuery

Default linear scan RKNN query class.

Field Summary

protected KNNQuery<O,D>

knnQuery KNN query we use.

Fields inherited from class de.lmu.ifi.dbs.elki.database.query.rknn.AbstractRKNNQuery

distanceQuery

Fields inherited from class de.lmu.ifi.dbs.elki.database.query.AbstractDataBasedQuery

relation

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

LinearScanRKNNQuery(DistanceQuery<O,D> distanceQuery, KNNQuery<O,D> knnQuery, Integer maxk)
Constructor.

Method Summary

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.

Methods inherited from class de.lmu.ifi.dbs.elki.database.query.rknn.AbstractRKNNQuery

getDistanceFactory

Methods inherited from class de.lmu.ifi.dbs.elki.database.query.AbstractDataBasedQuery

getRelation

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.lmu.ifi.dbs.elki.database.query.rknn.RKNNQuery

getRelation

Field Detail

knnQuery

protected final KNNQuery<O,D extends Distance<D>> knnQuery

KNN query we use.

Constructor Detail

LinearScanRKNNQuery

public LinearScanRKNNQuery(DistanceQuery<O,D> distanceQuery,
                           KNNQuery<O,D> knnQuery,
                           Integer maxk)

Constructor.

Parameters:

distanceQuery - Distance function to use

knnQuery - kNN query to use.

maxk - k to use

Method Detail

getRKNNForObject

public List<DistanceResultPair<D>> 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,D extends Distance<D>>

Parameters:

obj - query object instance

k - number of neighbors requested

Returns:

reverse k nearest neighbors

getRKNNForDBID

public List<DistanceResultPair<D>> getRKNNForDBID(DBID 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,D extends Distance<D>>

Specified by:

getRKNNForDBID in class AbstractRKNNQuery<O,D extends Distance<D>>

Parameters:

id - query object ID

k - number of neighbors requested

Returns:

reverse k nearest neighbors

getRKNNForBulkDBIDs

public List<List<DistanceResultPair<D>>> 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,D extends Distance<D>>

Parameters:

ids - query object IDs

k - number of neighbors requested

Returns:

reverse k nearest neighbors