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

Class ERiCDistanceFunction.Instance<V extends NumberVector<?>>

java.lang.Object

de.lmu.ifi.dbs.elki.database.query.AbstractDataBasedQuery<O>

de.lmu.ifi.dbs.elki.database.query.distance.AbstractDistanceQuery<O,D>

de.lmu.ifi.dbs.elki.database.query.distance.AbstractDatabaseDistanceQuery<O,D>

de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractIndexBasedDistanceFunction.Instance<V,FilteredLocalPCAIndex<V>,BitDistance,ERiCDistanceFunction>

de.lmu.ifi.dbs.elki.distance.distancefunction.correlation.ERiCDistanceFunction.Instance<V>

All Implemented Interfaces:

DatabaseQuery, DistanceQuery<V,BitDistance>, FilteredLocalPCABasedDistanceFunction.Instance<V,FilteredLocalPCAIndex<V>,BitDistance>, IndexBasedDistanceFunction.Instance<V,FilteredLocalPCAIndex<V>,BitDistance>

Enclosing class:

ERiCDistanceFunction

public static class ERiCDistanceFunction.Instance<V extends NumberVector<?>>
extends AbstractIndexBasedDistanceFunction.Instance<V,FilteredLocalPCAIndex<V>,BitDistance,ERiCDistanceFunction>
implements FilteredLocalPCABasedDistanceFunction.Instance<V,FilteredLocalPCAIndex<V>,BitDistance>

The actual instance bound to a particular database.

Field Summary

Fields

Modifier and Type	Field and Description
private double	delta Holds the value of ERiCDistanceFunction.DELTA_ID.
private double	tau Holds the value of ERiCDistanceFunction.TAU_ID.

Fields inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractIndexBasedDistanceFunction.Instance

index, parent

Fields inherited from class de.lmu.ifi.dbs.elki.database.query.AbstractDataBasedQuery

relation

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
ERiCDistanceFunction.Instance(Relation<V> database, FilteredLocalPCAIndex<V> index, ERiCDistanceFunction parent, double delta, double tau) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
BitDistance	distance(DBIDRef id1, DBIDRef id2) Note, that the pca of o1 must have equal ore more strong eigenvectors than the pca of o2.

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

getDistanceFunction, getIndex

Methods inherited from class de.lmu.ifi.dbs.elki.database.query.distance.AbstractDatabaseDistanceQuery

distance, distance, distance

Methods inherited from class de.lmu.ifi.dbs.elki.database.query.distance.AbstractDistanceQuery

getDistanceFactory, infiniteDistance, nullDistance, undefinedDistance

Methods inherited from class de.lmu.ifi.dbs.elki.database.query.AbstractDataBasedQuery

getRelation

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.lmu.ifi.dbs.elki.distance.distancefunction.IndexBasedDistanceFunction.Instance

getIndex

Methods inherited from interface de.lmu.ifi.dbs.elki.database.query.distance.DistanceQuery

distance, distance, distance, getDistanceFactory, getDistanceFunction, getRelation, infiniteDistance, nullDistance, undefinedDistance

Field Detail

delta

private final double delta

Holds the value of ERiCDistanceFunction.DELTA_ID.

tau

private final double tau

Holds the value of ERiCDistanceFunction.TAU_ID.

Constructor Detail

ERiCDistanceFunction.Instance

public ERiCDistanceFunction.Instance(Relation<V> database,
                             FilteredLocalPCAIndex<V> index,
                             ERiCDistanceFunction parent,
                             double delta,
                             double tau)

Constructor.

Parameters:

database - Database

index - Index

parent - Parent distance

delta - Delta parameter

tau - Tau parameter

Method Detail

distance

public BitDistance distance(DBIDRef id1,
                   DBIDRef id2)

Note, that the pca of o1 must have equal ore more strong eigenvectors than the pca of o2.

Specified by:

distance in interface DistanceQuery<V extends NumberVector<?>,BitDistance>

Specified by:

distance in class AbstractDistanceQuery<V extends NumberVector<?>,BitDistance>

Parameters:

id1 - first object id

id2 - second object id

Returns:

the distance between the two objects specified by their object ids