de.lmu.ifi.dbs.elki.database.query.similarity

Class PrimitiveSimilarityQuery<O>

java.lang.Object

de.lmu.ifi.dbs.elki.database.query.similarity.PrimitiveSimilarityQuery<O>

Type Parameters:

O - Database object type.

All Implemented Interfaces:

DatabaseQuery, SimilarityQuery<O>

public class PrimitiveSimilarityQuery<O>
extends java.lang.Object
implements SimilarityQuery<O>

Run a database query in a database context.

Since:

0.4.0

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
protected Relation<? extends O>	relation The data to use for this query
protected PrimitiveSimilarityFunction<? super O>	similarityFunction The distance function we use.

Fields inherited from interface de.lmu.ifi.dbs.elki.database.query.DatabaseQuery

HINT_BULK, HINT_EXACT, HINT_HEAVY_USE, HINT_NO_CACHE, HINT_OPTIMIZED_ONLY, HINT_SINGLE

Constructor Summary

Constructors

Constructor and Description
PrimitiveSimilarityQuery(Relation<? extends O> relation, PrimitiveSimilarityFunction<? super O> similarityFunction) Constructor.

Method Summary

Modifier and Type	Method and Description
Relation<? extends O>	getRelation() Access the underlying data query.
PrimitiveSimilarityFunction<? super O>	getSimilarityFunction() Get the inner similarity function.
double	similarity(DBIDRef id1, DBIDRef id2) Returns the similarity between the two objects specified by their object ids.
double	similarity(DBIDRef id1, O o2) Returns the similarity between the two objects specified by their object ids.
double	similarity(O o1, DBIDRef id2) Returns the similarity between the two objects specified by their object ids.
double	similarity(O o1, O o2) Returns the similarity between the two objects specified by their object ids.

Methods inherited from class java.lang.Object

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

Field Detail

relation

protected final Relation<? extends O> relation

The data to use for this query

similarityFunction

protected final PrimitiveSimilarityFunction<? super O> similarityFunction

The distance function we use.

Constructor Detail

PrimitiveSimilarityQuery

public PrimitiveSimilarityQuery(Relation<? extends O> relation,
                                PrimitiveSimilarityFunction<? super O> similarityFunction)

Constructor.

Parameters:

relation - Relation to use.

similarityFunction - Our similarity function

Method Detail

similarity

public final double similarity(DBIDRef id1,
                               DBIDRef id2)

Description copied from interface: SimilarityQuery

Returns the similarity between the two objects specified by their object ids.

Specified by:

similarity in interface SimilarityQuery<O>

Parameters:

id1 - first object id

id2 - second object id

Returns:

the similarity between the two objects specified by their object ids

similarity

public final double similarity(O o1,
                               DBIDRef id2)

Description copied from interface: SimilarityQuery

Returns the similarity between the two objects specified by their object ids.

Specified by:

similarity in interface SimilarityQuery<O>

Parameters:

o1 - first object

id2 - second object id

Returns:

the similarity between the two objects specified by their object ids

similarity

public final double similarity(DBIDRef id1,
                               O o2)

Description copied from interface: SimilarityQuery

Returns the similarity between the two objects specified by their object ids.

Specified by:

similarity in interface SimilarityQuery<O>

Parameters:

id1 - first object id

o2 - second object

Returns:

the similarity between the two objects specified by their object ids

similarity

public double similarity(O o1,
                         O o2)

Description copied from interface: SimilarityQuery

Returns the similarity between the two objects specified by their object ids.

Specified by:

similarity in interface SimilarityQuery<O>

Parameters:

o1 - first object

o2 - second object

Returns:

the similarity between the two objects specified by their object ids

getRelation

public Relation<? extends O> getRelation()

Description copied from interface: SimilarityQuery

Access the underlying data query.

Specified by:

getRelation in interface SimilarityQuery<O>

Returns:

data query in use

getSimilarityFunction

public PrimitiveSimilarityFunction<? super O> getSimilarityFunction()

Description copied from interface: SimilarityQuery

Get the inner similarity function.

Specified by:

getSimilarityFunction in interface SimilarityQuery<O>

Returns:

Similarity function