Package elki.math.statistics.dependence

Class PearsonCorrelationDependence

java.lang.Object

elki.math.statistics.dependence.PearsonCorrelationDependence

All Implemented Interfaces:

Dependence

@Priority(201)
public class PearsonCorrelationDependence
extends java.lang.Object
implements Dependence

Pearson product-moment correlation coefficient.

Since:

0.7.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PearsonCorrelationDependence.Par	Parameterization class

Nested classes/interfaces inherited from interface elki.math.statistics.dependence.Dependence

Dependence.Utils

Field Summary

Fields

Modifier and Type	Field	Description
private static Logging	LOG	Class logger.
static PearsonCorrelationDependence	STATIC	Static instance.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PearsonCorrelationDependence()	Constructor - use STATIC instance.

Method Summary

Modifier and Type	Method	Description
<A,B> double	dependence(NumberArrayAdapter<?,A> adapter1, A data1, NumberArrayAdapter<?,B> adapter2, B data2)	Measure the dependence of two variables.
<A> double[]	dependence(NumberArrayAdapter<?,A> adapter, java.util.List<? extends A> data)	Measure the dependence of two variables.

Methods inherited from class java.lang.Object

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

Methods inherited from interface elki.math.statistics.dependence.Dependence

dependence, dependence

Field Detail

LOG

private static final Logging LOG

Class logger.

STATIC

public static final PearsonCorrelationDependence STATIC

Static instance.

Constructor Detail

PearsonCorrelationDependence

protected PearsonCorrelationDependence()

Constructor - use STATIC instance.

Method Detail

dependence

public <A,B> double dependence(NumberArrayAdapter<?,A> adapter1,
                                     A data1,
                                     NumberArrayAdapter<?,B> adapter2,
                                     B data2)

Description copied from interface: Dependence

Measure the dependence of two variables.

This is the more flexible API, which allows using different internal data representations.

Specified by:

dependence in interface Dependence

Type Parameters:

A - First array type

B - Second array type

Parameters:

adapter1 - First data adapter

data1 - First data set

adapter2 - Second data adapter

data2 - Second data set

Returns:

Dependence measure

dependence

public <A> double[] dependence(NumberArrayAdapter<?,A> adapter,
                               java.util.List<? extends A> data)

Description copied from interface: Dependence

Measure the dependence of two variables.

This is the more flexible API, which allows using different internal data representations.

The resulting data is a serialized lower triangular matrix:

  X  S  S  S  S  S
  0  X  S  S  S  S
  1  2  X  S  S  S
  3  4  5  X  S  S
  6  7  8  9  X  S
 10 11 12 13 14  X
 

Specified by:

dependence in interface Dependence

Type Parameters:

A - Array type

Parameters:

adapter - Data adapter

data - Data sets. Must have fast random access!

Returns:

Lower triangular serialized matrix