Package elki.outlier.lof

Class ALOCI.Node

java.lang.Object

elki.outlier.lof.ALOCI.Node

All Implemented Interfaces:

FeatureVector<java.lang.Number>, NumberVector, SpatialComparable

Enclosing class:

ALOCI<V extends NumberVector>

static class ALOCI.Node
extends java.lang.Object
implements NumberVector

Node of the ALOCI Quadtree

Author:

Erich Schubert

Nested Class Summary

Nested classes/interfaces inherited from interface elki.data.NumberVector

NumberVector.Factory<V extends NumberVector>

Field Summary

Fields

Modifier and Type	Field	Description
(package private) double[]	center	Center vector
(package private) java.util.List<ALOCI.Node>	children	Child nodes, may be null
(package private) int	code	Position code
(package private) int	count	Number of elements
(package private) int	level	Level of node
(package private) ALOCI.Node	parent	Parent node

Fields inherited from interface elki.data.FeatureVector

TYPE

Fields inherited from interface elki.data.NumberVector

ATTRIBUTE_SEPARATOR, FIELD, FIELD_1D, FIELD_2D, VARIABLE_LENGTH

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Node(int code, double[] center, int count, int level, java.util.List<ALOCI.Node> children)	Constructor.

Method Summary

Modifier and Type	Method	Description
double	doubleValue(int dimension)	Returns the value in the specified dimension as double.
int	getCount()	Get count of subtree
long	getCubicSum(int levels)	Get cubic sum.
int	getDimensionality()	The dimensionality of the vector space where of this FeatureVector of V is an element.
int	getLevel()	Get level of node.
long	getSquareSum(int levels)	Get sum of squares, recursively
long	longValue(int dimension)	Returns the value in the specified dimension as long.
double[]	toArray()	Returns a double array copy of this vector.

Methods inherited from class java.lang.Object

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

Methods inherited from interface elki.data.FeatureVector

toString

Methods inherited from interface elki.data.NumberVector

byteValue, floatValue, getMax, getMin, getValue, intValue, shortValue

Field Detail

code

final int code

Position code

count

final int count

Number of elements

level

final int level

Level of node

children

java.util.List<ALOCI.Node> children

Child nodes, may be null

parent

ALOCI.Node parent

Parent node

center

double[] center

Center vector

Constructor Detail

Node

protected Node(int code,
               double[] center,
               int count,
               int level,
               java.util.List<ALOCI.Node> children)

Constructor.

Parameters:

code - Node code

center - Center vector

count - Element count

level - Node level

children - Children list

Method Detail

getLevel

public int getLevel()

Get level of node.

Returns:

Level of node

getCount

public int getCount()

Get count of subtree

Returns:

subtree count

getSquareSum

public long getSquareSum(int levels)

Get sum of squares, recursively

Parameters:

levels - Depth to collect

Returns:

Sum of squares

getCubicSum

public long getCubicSum(int levels)

Get cubic sum.

Parameters:

levels - Level to collect

Returns:

sum of cubes

getDimensionality

public int getDimensionality()

Description copied from interface: FeatureVector

The dimensionality of the vector space where of this FeatureVector of V is an element.

Specified by:

getDimensionality in interface FeatureVector<java.lang.Number>

Specified by:

getDimensionality in interface SpatialComparable

Returns:

the number of dimensions of this FeatureVector of V

doubleValue

public double doubleValue(int dimension)

Description copied from interface: NumberVector

Returns the value in the specified dimension as double.

Note: this might seem redundant with respect to getValue(dim).doubleValue(), but usually this is much more efficient due to boxing/unboxing cost.

Specified by:

doubleValue in interface NumberVector

Parameters:

dimension - the desired dimension, where 0 ≤ dimension < this.getDimensionality()

Returns:

the value in the specified dimension

longValue

public long longValue(int dimension)

Description copied from interface: NumberVector

Returns the value in the specified dimension as long.

Note: this might seem redundant with respect to getValue(dim).longValue(), but usually this is much more efficient due to boxing/unboxing cost.

Specified by:

longValue in interface NumberVector

Parameters:

dimension - the desired dimension, where 0 ≤ dimension < this.getDimensionality()

Returns:

the value in the specified dimension

toArray

public double[] toArray()

Description copied from interface: NumberVector

Returns a double array copy of this vector.

Specified by:

toArray in interface NumberVector

Returns:

Copy as double[]