Package edu.cmu.tetrad.util

Class PartialCorrelationPdf

java.lang.Object

edu.cmu.tetrad.util.PartialCorrelationPdf

All Implemented Interfaces:

Function, TetradSerializable, Serializable

public class PartialCorrelationPdf
extends Object
implements Function, TetradSerializable

Frequency function of partial correlation r(12|34...k), assuming that the true partial correlation is equal to zero. Uses the equation (29.13.4) from Cramer's _Mathematical Methods of Statistics_.

Author:

josephramsey

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
PartialCorrelationPdf(int n, int k)	Constructs a new zero partial correlation distribution function with the given values for n and k.

Method Summary

Modifier and Type	Method	Description
int	getK()
static PartialCorrelationPdf	serializableInstance()	Generates a simple exemplar of this class to test serialization.
String	toString()
double	valueAt(double x)	Calculates the value of the function at the given domain point.

Methods inherited from class java.lang.Object

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

Constructor Details

PartialCorrelationPdf

public PartialCorrelationPdf(int n,
 int k)

Constructs a new zero partial correlation distribution function with the given values for n and k.

Parameters:

n - sample size

k - the number of variables being compared.

Method Details

serializableInstance

public static PartialCorrelationPdf serializableInstance()

Generates a simple exemplar of this class to test serialization.

Returns:

the examplar.

valueAt

public double valueAt(double x)

Calculates the value of the function at the given domain point.

Specified by:

valueAt in interface Function

Parameters:

x - the domain point.

Returns:

the value of the function at x.

toString

public String toString()

Specified by:

toString in interface Function

Overrides:

toString in class Object

Returns:

a description of the function.

getK

public int getK()

Returns:

Ibid.