de.lmu.ifi.dbs.elki.distance.distancefunction.adapter

Class ArccosSimilarityAdapter<O>

java.lang.Object

de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractDatabaseDistanceFunction<O,DoubleDistance>

de.lmu.ifi.dbs.elki.distance.distancefunction.adapter.AbstractSimilarityAdapter<O>

de.lmu.ifi.dbs.elki.distance.distancefunction.adapter.ArccosSimilarityAdapter<O>

Type Parameters:

O - Object class to process.

All Implemented Interfaces:

DistanceFunction<O,DoubleDistance>, Parameterizable

public class ArccosSimilarityAdapter<O>
extends AbstractSimilarityAdapter<O>

Adapter from a normalized similarity function to a distance function using arccos(sim).

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ArccosSimilarityAdapter.Instance<O> Distance function instance
static class	ArccosSimilarityAdapter.Parameterizer<O> Parameterization class.

Field Summary

Fields inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.adapter.AbstractSimilarityAdapter

SIMILARITY_FUNCTION_ID, similarityFunction

Constructor Summary

Constructors

Constructor and Description
ArccosSimilarityAdapter(NormalizedSimilarityFunction<? super O,? extends NumberDistance<?,?>> similarityFunction) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
<T extends O> DistanceQuery<T,DoubleDistance>	instantiate(Relation<T> database) Instantiate with a database to get the actual distance query.

Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.adapter.AbstractSimilarityAdapter

equals, getDistanceFactory, getInputTypeRestriction, isSymmetric

Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractDatabaseDistanceFunction

isMetric

Methods inherited from class java.lang.Object

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

Constructor Detail

ArccosSimilarityAdapter

public ArccosSimilarityAdapter(NormalizedSimilarityFunction<? super O,? extends NumberDistance<?,?>> similarityFunction)

Constructor.

Parameters:

similarityFunction - Similarity function

Method Detail

instantiate

public <T extends O> DistanceQuery<T,DoubleDistance> instantiate(Relation<T> database)

Description copied from interface: DistanceFunction

Instantiate with a database to get the actual distance query.

Specified by:

instantiate in interface DistanceFunction<O,DoubleDistance>

Specified by:

instantiate in class AbstractSimilarityAdapter<O>

Parameters:

database - The representation to use

Returns:

Actual distance query.