Package elki.application.cache

Class CacheDoubleDistanceKNNLists<O>

java.lang.Object

elki.application.AbstractApplication

elki.application.cache.CacheDoubleDistanceKNNLists<O>

Type Parameters:

O - Object type

public class CacheDoubleDistanceKNNLists<O>
extends AbstractApplication

Precompute the k nearest neighbors in a disk cache.

Since:

0.6.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CacheDoubleDistanceKNNLists.Par<O>	Parameterization class.

Field Summary

Fields

Modifier and Type	Field	Description
private Database	database	Data source to process.
private Distance<? super O>	distance	Distance function that is to be cached.
private int	k	Number of neighbors to precompute.
static int	KNN_CACHE_MAGIC	Magic number to identify files.
private static Logging	LOG	The logger for this class.
private java.nio.file.Path	out	Output file.

Fields inherited from class elki.application.AbstractApplication

REFERENCE, VERSION

Constructor Summary

Constructors

Constructor	Description
CacheDoubleDistanceKNNLists(Database database, Distance<? super O> distance, int k, java.nio.file.Path out)	Constructor.

Method Summary

Modifier and Type	Method	Description
static void	main(java.lang.String[] args)	Main method, delegate to super class.
void	run()	Runs the application.

Methods inherited from class elki.application.AbstractApplication

printErrorMessage, runCLIApplication, usage

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final Logging LOG

The logger for this class.

database

private Database database

Data source to process.

distance

private Distance<? super O> distance

Distance function that is to be cached.

k

private int k

Number of neighbors to precompute.

out

private java.nio.file.Path out

Output file.

KNN_CACHE_MAGIC

public static final int KNN_CACHE_MAGIC

Magic number to identify files.

Note, when cloning this class, and performing any incompatible change to the file format, you should also change this magic ID!

See Also:

Constant Field Values

Constructor Detail

CacheDoubleDistanceKNNLists

public CacheDoubleDistanceKNNLists(Database database,
                                   Distance<? super O> distance,
                                   int k,
                                   java.nio.file.Path out)

Constructor.

Parameters:

database - Data source

distance - Distance function

k - Number of nearest neighbors

out - Matrix output file

Method Detail

run

public void run()

Description copied from class: AbstractApplication

Runs the application.

Specified by:

run in class AbstractApplication

main

public static void main(java.lang.String[] args)

Main method, delegate to super class.

Parameters:

args - Command line arguments