de.lmu.ifi.dbs.elki.algorithm

Class KNNDistanceOrder<O,D extends Distance<D>>

java.lang.Object

de.lmu.ifi.dbs.elki.algorithm.AbstractAlgorithm<R>

de.lmu.ifi.dbs.elki.algorithm.AbstractDistanceBasedAlgorithm<O,D,KNNDistanceOrderResult<D>>

de.lmu.ifi.dbs.elki.algorithm.KNNDistanceOrder<O,D>

Type Parameters:

O - the type of DatabaseObjects handled by this Algorithm

D - the type of Distance used by this Algorithm

All Implemented Interfaces:

Algorithm, InspectionUtilFrequentlyScanned, Parameterizable

@Title(value="KNN-Distance-Order")
@Description(value="Assesses the knn distances for a specified k and orders them.")
public class KNNDistanceOrder<O,D extends Distance<D>>
extends AbstractDistanceBasedAlgorithm<O,D,KNNDistanceOrderResult<D>>

Provides an order of the kNN-distances for all objects within the database.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	KNNDistanceOrder.Parameterizer<O,D extends Distance<D>> Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
private int	k Holds the value of K_ID.
static OptionID	K_ID Parameter to specify the distance of the k-distant object to be assessed, must be an integer greater than 0.
private static Logging	logger The logger for this class.
private double	percentage Holds the value of PERCENTAGE_ID.
static OptionID	PERCENTAGE_ID Parameter to specify the average percentage of distances randomly chosen to be provided in the result, must be a double greater than 0 and less than or equal to 1.

Fields inherited from class de.lmu.ifi.dbs.elki.algorithm.AbstractDistanceBasedAlgorithm

DISTANCE_FUNCTION_ID

Constructor Summary

Constructors

Constructor and Description
KNNDistanceOrder(DistanceFunction<O,D> distanceFunction, int k, double percentage) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
TypeInformation[]	getInputTypeRestriction() Get the input type restriction used for negotiating the data query.
protected Logging	getLogger() Get the (STATIC) logger for this class.
KNNDistanceOrderResult<D>	run(Database database, Relation<O> relation) Provides an order of the kNN-distances for all objects within the specified database.

Methods inherited from class de.lmu.ifi.dbs.elki.algorithm.AbstractDistanceBasedAlgorithm

getDistanceFunction

Methods inherited from class de.lmu.ifi.dbs.elki.algorithm.AbstractAlgorithm

makeParameterDistanceFunction, run

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final Logging logger

The logger for this class.

K_ID

public static final OptionID K_ID

Parameter to specify the distance of the k-distant object to be assessed, must be an integer greater than 0.

k

private int k

Holds the value of K_ID.

PERCENTAGE_ID

public static final OptionID PERCENTAGE_ID

Parameter to specify the average percentage of distances randomly chosen to be provided in the result, must be a double greater than 0 and less than or equal to 1.

percentage

private double percentage

Holds the value of PERCENTAGE_ID.

Constructor Detail

KNNDistanceOrder

public KNNDistanceOrder(DistanceFunction<O,D> distanceFunction,
                int k,
                double percentage)

Constructor.

Parameters:

distanceFunction - Distance function

k - k Parameter

percentage - percentage parameter

Method Detail

run

public KNNDistanceOrderResult<D> run(Database database,
                            Relation<O> relation)

Provides an order of the kNN-distances for all objects within the specified database.

Parameters:

database - Database

relation - Relation

Returns:

Result

getInputTypeRestriction

public TypeInformation[] getInputTypeRestriction()

Description copied from class: AbstractAlgorithm

Get the input type restriction used for negotiating the data query.

Specified by:

getInputTypeRestriction in interface Algorithm

Specified by:

getInputTypeRestriction in class AbstractAlgorithm<KNNDistanceOrderResult<D extends Distance<D>>>

Returns:

Type restriction

getLogger

protected Logging getLogger()

Description copied from class: AbstractAlgorithm

Get the (STATIC) logger for this class.

Specified by:

getLogger in class AbstractAlgorithm<KNNDistanceOrderResult<D extends Distance<D>>>

Returns:

the static logger