de.lmu.ifi.dbs.elki.index.invertedlist

Class InMemoryInvertedIndex.ArcCosineKNNQuery

java.lang.Object

de.lmu.ifi.dbs.elki.database.query.knn.AbstractDistanceKNNQuery<V>

de.lmu.ifi.dbs.elki.index.invertedlist.InMemoryInvertedIndex.ArcCosineKNNQuery

All Implemented Interfaces:

DatabaseQuery, KNNQuery<V>

Enclosing class:

InMemoryInvertedIndex<V extends NumberVector>

protected class InMemoryInvertedIndex.ArcCosineKNNQuery
extends AbstractDistanceKNNQuery<V>

kNN query object, for arc cosine distance.

Author:

Erich Schubert

Field Summary

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

distanceQuery, 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

Constructors

Constructor and Description
ArcCosineKNNQuery(DistanceQuery<V> distanceQuery) Constructor.

Method Summary

Modifier and Type	Method and Description
KNNList	getKNNForObject(V obj, int k) Get the k nearest neighbors for a particular id.

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

getKNNForBulkDBIDs, getKNNForDBID

Methods inherited from class java.lang.Object

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

Constructor Detail

ArcCosineKNNQuery

public ArcCosineKNNQuery(DistanceQuery<V> distanceQuery)

Constructor.

Parameters:

distanceQuery - Distance query

Method Detail

getKNNForObject

public KNNList getKNNForObject(V obj,
                               int k)

Description copied from interface: KNNQuery

Get the k nearest neighbors for a particular id.

Specified by:

getKNNForObject in interface KNNQuery<V extends NumberVector>

Specified by:

getKNNForObject in class AbstractDistanceKNNQuery<V extends NumberVector>

Parameters:

obj - Query object

k - Number of neighbors requested

Returns:

neighbors