Package elki.clustering.dbscan.predicates

Class EpsilonNeighborPredicate.Instance

java.lang.Object

elki.clustering.dbscan.predicates.EpsilonNeighborPredicate.Instance

All Implemented Interfaces:

NeighborPredicate.Instance<DoubleDBIDList>

Enclosing class:

EpsilonNeighborPredicate<O>

public static class EpsilonNeighborPredicate.Instance
extends java.lang.Object
implements NeighborPredicate.Instance<DoubleDBIDList>

Instance for a particular data set.

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field	Description
protected double	epsilon	Range to query with
protected DBIDs	ids	DBIDs to process
protected RangeSearcher<DBIDRef>	rq	Range query to use on the database.

Constructor Summary

Constructors

Constructor	Description
Instance(double epsilon, RangeSearcher<DBIDRef> rq, DBIDs ids)	Constructor.

Method Summary

Modifier and Type	Method	Description
DBIDs	getIDs()	Get the IDs the predicate is defined for.
DoubleDBIDList	getNeighbors(DBIDRef reference)	Get the neighbors of a reference object for DBSCAN.
DBIDIter	iterDBIDs(DoubleDBIDList neighbors)	Add the neighbors to a DBID set

Methods inherited from class java.lang.Object

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

Field Detail

epsilon

protected double epsilon

Range to query with

rq

protected RangeSearcher<DBIDRef> rq

Range query to use on the database.

ids

protected DBIDs ids

DBIDs to process

Constructor Detail

Instance

public Instance(double epsilon,
                RangeSearcher<DBIDRef> rq,
                DBIDs ids)

Constructor.

Parameters:

epsilon - Epsilon

rq - Range query to use

ids - DBIDs to process

Method Detail

getIDs

public DBIDs getIDs()

Description copied from interface: NeighborPredicate.Instance

Get the IDs the predicate is defined for.

Specified by:

getIDs in interface NeighborPredicate.Instance<DoubleDBIDList>

Returns:

Database ids

getNeighbors

public DoubleDBIDList getNeighbors(DBIDRef reference)

Description copied from interface: NeighborPredicate.Instance

Get the neighbors of a reference object for DBSCAN.

Specified by:

getNeighbors in interface NeighborPredicate.Instance<DoubleDBIDList>

Parameters:

reference - Reference object

Returns:

Neighborhood

iterDBIDs

public DBIDIter iterDBIDs(DoubleDBIDList neighbors)

Description copied from interface: NeighborPredicate.Instance

Add the neighbors to a DBID set

Specified by:

iterDBIDs in interface NeighborPredicate.Instance<DoubleDBIDList>

Parameters:

neighbors - Neighbors to iterate over

Returns:

iterator