Package elki.index.preprocessed.knn

Class CachedDoubleDistanceKNNPreprocessor<O>

java.lang.Object

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

elki.index.preprocessed.knn.CachedDoubleDistanceKNNPreprocessor<O>

Type Parameters:

O - Object type

All Implemented Interfaces:

Index, KNNIndex<O>

public class CachedDoubleDistanceKNNPreprocessor<O>
extends AbstractMaterializeKNNPreprocessor<O>

Preprocessor that loads an existing cached kNN result.

Since:

0.6.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CachedDoubleDistanceKNNPreprocessor.Factory<O>	The parameterizable factory.

Field Summary

Fields

Modifier and Type	Field	Description
private java.nio.file.Path	filename	File to load.
private static Logging	LOG	Class logger.

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

distance, distanceQuery, k, relation, storage

Constructor Summary

Constructors

Constructor	Description
CachedDoubleDistanceKNNPreprocessor(Relation<O> relation, Distance<? super O> distance, int k, java.nio.file.Path file)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected Logging	getLogger()	Get the classes static logger.
protected void	preprocess()	Perform the preprocessing step.

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

createStorage, get, getDistanceQuery, getK, initialize, kNNByDBID, kNNByObject

Methods inherited from class java.lang.Object

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

Methods inherited from interface elki.index.Index

logStatistics

Field Detail

filename

private java.nio.file.Path filename

File to load.

LOG

private static final Logging LOG

Class logger.

Constructor Detail

CachedDoubleDistanceKNNPreprocessor

public CachedDoubleDistanceKNNPreprocessor(Relation<O> relation,
                                           Distance<? super O> distance,
                                           int k,
                                           java.nio.file.Path file)

Constructor.

Parameters:

relation - Relation to index

distance - Distance function

k - K

file - File to load

Method Detail

preprocess

protected void preprocess()

Description copied from class: AbstractMaterializeKNNPreprocessor

Perform the preprocessing step.

Specified by:

preprocess in class AbstractMaterializeKNNPreprocessor<O>

getLogger

protected Logging getLogger()

Description copied from class: AbstractMaterializeKNNPreprocessor

Get the classes static logger.

Specified by:

getLogger in class AbstractMaterializeKNNPreprocessor<O>

Returns:

Logger