de.lmu.ifi.dbs.elki.algorithm.outlier.subspace

Class SOD.SODModel<V extends NumberVector<?>>

java.lang.Object

de.lmu.ifi.dbs.elki.algorithm.outlier.subspace.SOD.SODModel<V>

Type Parameters:

V - the type of DatabaseObjects handled by this Result

All Implemented Interfaces:

TextWriteable, Comparable<SOD.SODModel<?>>

Enclosing class:

SOD<V extends NumberVector<?>,D extends NumberDistance<D,?>>

public static class SOD.SODModel<V extends NumberVector<?>>
extends Object
implements TextWriteable, Comparable<SOD.SODModel<?>>

SOD Model class

Field Summary

Fields

Modifier and Type	Field and Description
private V	center
private double[]	centerValues
private double	expectationOfVariance
private double	sod
private double[]	variances
private BitSet	weightVector

Constructor Summary

Constructors

Constructor and Description
SOD.SODModel(Relation<V> relation, DBIDs neighborhood, double alpha, V queryObject) Initialize SOD Model

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(SOD.SODModel<?> o)
double	getSod() Return the SOD of the point.
private double	subspaceOutlierDegree(V queryObject, V center, BitSet weightVector) Compute SOD score.
void	writeToText(TextWriterStream out, String label) Write self to the given TextWriterStream

Methods inherited from class java.lang.Object

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

Field Detail

centerValues

private double[] centerValues

center

private V extends NumberVector<?> center

variances

private double[] variances

expectationOfVariance

private double expectationOfVariance

weightVector

private BitSet weightVector

sod

private double sod

Constructor Detail

SOD.SODModel

public SOD.SODModel(Relation<V> relation,
            DBIDs neighborhood,
            double alpha,
            V queryObject)

Initialize SOD Model

Parameters:

relation - Database

neighborhood - Neighborhood

alpha - Alpha value

queryObject - Query object

Method Detail

subspaceOutlierDegree

private double subspaceOutlierDegree(V queryObject,
                           V center,
                           BitSet weightVector)

Compute SOD score.

Parameters:

queryObject - Query object

center - Center vector

weightVector - Weight vector

Returns:

sod score

getSod

public double getSod()

Return the SOD of the point.

Returns:

sod value

writeToText

public void writeToText(TextWriterStream out,
               String label)

Description copied from interface: TextWriteable

Write self to the given TextWriterStream

Specified by:

writeToText in interface TextWriteable

Parameters:

out - Output writer

label - Label

compareTo

public int compareTo(SOD.SODModel<?> o)

Specified by:

compareTo in interface Comparable<SOD.SODModel<?>>