de.lmu.ifi.dbs.elki.index

Interface DistanceIndex<O>

Type Parameters:

O - Object type

All Superinterfaces:

Index, Result

All Known Implementing Classes:

PrecomputedDistanceMatrix

public interface DistanceIndex<O>
extends Index

Index with support for distance queries (e.g. precomputed distance matrixes, caches)

Since:

0.7.0

Author:

Erich Schubert

Method Summary

Modifier and Type	Method and Description
DistanceQuery<O>	getDistanceQuery(DistanceFunction<? super O> distanceFunction, java.lang.Object... hints) Get a KNN query object for the given distance query and k.

Methods inherited from interface de.lmu.ifi.dbs.elki.index.Index

initialize, logStatistics

Methods inherited from interface de.lmu.ifi.dbs.elki.result.Result

getLongName, getShortName

Method Detail

getDistanceQuery

DistanceQuery<O> getDistanceQuery(DistanceFunction<? super O> distanceFunction,
                                  java.lang.Object... hints)

Get a KNN query object for the given distance query and k. This function MAY return null, when the given distance is not supported!

Parameters:

distanceFunction - Distance function to use.

hints - Hints for the optimizer

Returns:

KNN Query object or null