de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.strategies.split

Class RTreeQuadraticSplit

java.lang.Object

de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.strategies.split.RTreeQuadraticSplit

All Implemented Interfaces:

SplitStrategy, InspectionUtilFrequentlyScanned, Parameterizable

@Reference(authors="Antonin Guttman",
           title="R-Trees: A Dynamic Index Structure For Spatial Searching",
           booktitle="Proceedings of the 1984 ACM SIGMOD international conference on Management of data",
           url="http://dx.doi.org/10.1145/971697.602266")
public class RTreeQuadraticSplit
extends Object
implements SplitStrategy

Quadratic-time complexity greedy split as used by the original R-Tree.

Antonin Guttman:
R-Trees: A Dynamic Index Structure For Spatial Searching
in Proceedings of the 1984 ACM SIGMOD international conference on Management of data.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RTreeQuadraticSplit.Parameterizer Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
static RTreeQuadraticSplit	STATIC Static instance.

Constructor Summary

Constructors

Constructor and Description
RTreeQuadraticSplit()

Method Summary

Methods

Modifier and Type	Method and Description
<E extends SpatialComparable,A> BitSet	split(A entries, ArrayAdapter<E,A> getter, int minEntries) Split a page

Methods inherited from class java.lang.Object

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

Field Detail

STATIC

public static final RTreeQuadraticSplit STATIC

Static instance.

Constructor Detail

RTreeQuadraticSplit

public RTreeQuadraticSplit()

Method Detail

split

public <E extends SpatialComparable,A> BitSet split(A entries,
                                           ArrayAdapter<E,A> getter,
                                           int minEntries)

Description copied from interface: SplitStrategy

Split a page

Specified by:

split in interface SplitStrategy

Parameters:

entries - Entries to split

getter - Adapter for the entries array

minEntries - Minimum number of entries in each part

Returns:

BitSet containing the assignment.