de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.query

Class DoubleDistanceRStarTreeRangeQuery<O extends SpatialComparable>

java.lang.Object

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

de.lmu.ifi.dbs.elki.database.query.range.AbstractDistanceRangeQuery<O,DoubleDistance>

de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.query.DoubleDistanceRStarTreeRangeQuery<O>

All Implemented Interfaces:

DatabaseQuery, RangeQuery<O,DoubleDistance>

@Reference(authors="J. Kuan, P. Lewis",
           title="Fast k nearest neighbour search for R-tree family",
           booktitle="Proc. Int. Conf Information, Communications and Signal Processing, ICICS 1997",
           url="http://dx.doi.org/10.1109/ICICS.1997.652114")
public class DoubleDistanceRStarTreeRangeQuery<O extends SpatialComparable>
extends AbstractDistanceRangeQuery<O,DoubleDistance>

Instance of a range query for a particular spatial index. Reference:

J. Kuan, P. Lewis
Fast k nearest neighbour search for R-tree family
In Proc. Int. Conf Information, Communications and Signal Processing, ICICS 1997

Field Summary

Fields

Modifier and Type	Field and Description
protected SpatialPrimitiveDoubleDistanceFunction<? super O>	distanceFunction Spatial primitive distance function
protected AbstractRStarTree<?,?>	tree The index to use

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

distanceQuery

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
DoubleDistanceRStarTreeRangeQuery(AbstractRStarTree<?,?> tree, DistanceQuery<O,DoubleDistance> distanceQuery, SpatialPrimitiveDoubleDistanceFunction<? super O> distanceFunction) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected DoubleDistanceDBIDList	doRangeQuery(O object, double epsilon) Perform the actual query process.
DistanceDBIDResult<DoubleDistance>	getRangeForDBID(DBIDRef id, DoubleDistance range) Get the nearest neighbors for a particular id in a given query range
DistanceDBIDResult<DoubleDistance>	getRangeForObject(O obj, DoubleDistance range) Get the nearest neighbors for a particular object in a given query range

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

Field Detail

tree

protected final AbstractRStarTree<?,?> tree

The index to use

distanceFunction

protected final SpatialPrimitiveDoubleDistanceFunction<? super O extends SpatialComparable> distanceFunction

Spatial primitive distance function

Constructor Detail

DoubleDistanceRStarTreeRangeQuery

public DoubleDistanceRStarTreeRangeQuery(AbstractRStarTree<?,?> tree,
                                 DistanceQuery<O,DoubleDistance> distanceQuery,
                                 SpatialPrimitiveDoubleDistanceFunction<? super O> distanceFunction)

Constructor.

Parameters:

tree - Index to use

distanceQuery - Distance query to use

distanceFunction - Distance function

Method Detail

doRangeQuery

protected DoubleDistanceDBIDList doRangeQuery(O object,
                                  double epsilon)

Perform the actual query process.

Parameters:

object - Query object

epsilon - Query range

Returns:

Objects contained in query range.

getRangeForObject

public DistanceDBIDResult<DoubleDistance> getRangeForObject(O obj,
                                                   DoubleDistance range)

Description copied from interface: RangeQuery

Get the nearest neighbors for a particular object in a given query range

Specified by:

getRangeForObject in interface RangeQuery<O extends SpatialComparable,DoubleDistance>

Specified by:

getRangeForObject in class AbstractDistanceRangeQuery<O extends SpatialComparable,DoubleDistance>

Parameters:

obj - Query object

range - Query range

Returns:

neighbors

getRangeForDBID

public DistanceDBIDResult<DoubleDistance> getRangeForDBID(DBIDRef id,
                                                 DoubleDistance range)

Description copied from interface: RangeQuery

Get the nearest neighbors for a particular id in a given query range

Specified by:

getRangeForDBID in interface RangeQuery<O extends SpatialComparable,DoubleDistance>

Specified by:

getRangeForDBID in class AbstractDistanceRangeQuery<O extends SpatialComparable,DoubleDistance>

Parameters:

id - query object ID

range - Query range

Returns:

neighbors