Package elki.index.preprocessed.knn

Class RandomSampleKNNPreprocessor.Factory<O>

java.lang.Object

elki.index.preprocessed.knn.AbstractMaterializeKNNPreprocessor.Factory<O>

elki.index.preprocessed.knn.RandomSampleKNNPreprocessor.Factory<O>

Type Parameters:

O - The object type

All Implemented Interfaces:

IndexFactory<O>

Enclosing class:

RandomSampleKNNPreprocessor<O>

public static class RandomSampleKNNPreprocessor.Factory<O>
extends AbstractMaterializeKNNPreprocessor.Factory<O>

The parameterizable factory.

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field	Description
private RandomFactory	rnd	Random generator
private double	share	Relative share of objects to get

Fields inherited from class elki.index.preprocessed.knn.AbstractMaterializeKNNPreprocessor.Factory

distance, DISTANCE_FUNCTION_ID, k, K_ID

Constructor Summary

Constructors

Constructor	Description
Factory(int k, Distance<? super O> distance, double share, RandomFactory rnd)	Constructor.

Method Summary

Modifier and Type	Method	Description
RandomSampleKNNPreprocessor<O>	instantiate(Relation<O> relation)	Sets the database in the distance function of this index (if existing).

Methods inherited from class elki.index.preprocessed.knn.AbstractMaterializeKNNPreprocessor.Factory

getDistance, getInputTypeRestriction

Methods inherited from class java.lang.Object

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

Field Detail

share

private final double share

Relative share of objects to get

rnd

private final RandomFactory rnd

Random generator

Constructor Detail

Factory

public Factory(int k,
               Distance<? super O> distance,
               double share,
               RandomFactory rnd)

Constructor.

Parameters:

k - K

distance - distance function

share - Sample size (relative)

rnd - Random generator

Method Detail

instantiate

public RandomSampleKNNPreprocessor<O> instantiate(Relation<O> relation)

Description copied from interface: IndexFactory

Sets the database in the distance function of this index (if existing).

Specified by:

instantiate in interface IndexFactory<O>

Specified by:

instantiate in class AbstractMaterializeKNNPreprocessor.Factory<O>

Parameters:

relation - the relation to index