Package elki.database.query.knn

Class PreprocessorSqrtKNNQuery

java.lang.Object

elki.database.query.knn.PreprocessorKNNQuery

elki.database.query.knn.PreprocessorSqrtKNNQuery

All Implemented Interfaces:

KNNSearcher<DBIDRef>

public class PreprocessorSqrtKNNQuery
extends PreprocessorKNNQuery

Use the square rooted values of precomputed kNN.

Since:

0.4.0

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field	Description
private static Logging	LOG	Class logger

Fields inherited from class elki.database.query.knn.PreprocessorKNNQuery

relation

Constructor Summary

Constructors

Constructor	Description
PreprocessorSqrtKNNQuery(Relation<?> relation, AbstractMaterializeKNNPreprocessor<?> preprocessor)	Constructor.

Method Summary

Modifier and Type	Method	Description
KNNList	getKNN(DBIDRef id, int k)	Get the k nearest neighbors for a particular object.
protected Logging	getLogger()	Get the class logger.

Methods inherited from class elki.database.query.knn.PreprocessorKNNQuery

getPreprocessor

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

Class logger

Constructor Detail

PreprocessorSqrtKNNQuery

public PreprocessorSqrtKNNQuery(Relation<?> relation,
                                AbstractMaterializeKNNPreprocessor<?> preprocessor)

Constructor.

Parameters:

relation - Relation to query

preprocessor - Preprocessor instance to use

Method Detail

getKNN

public KNNList getKNN(DBIDRef id,
                      int k)

Description copied from interface: KNNSearcher

Get the k nearest neighbors for a particular object.

Specified by:

getKNN in interface KNNSearcher<DBIDRef>

Overrides:

getKNN in class PreprocessorKNNQuery

Parameters:

id - query object

k - Number of neighbors requested

Returns:

neighbors

getLogger

protected Logging getLogger()

Get the class logger. Override when subclassing!

Overrides:

getLogger in class PreprocessorKNNQuery

Returns:

Class logger.