Package edu.cmu.tetrad.util.dist

Class MixtureOfGaussians

java.lang.Object

edu.cmu.tetrad.util.dist.MixtureOfGaussians

All Implemented Interfaces:

Distribution, TetradSerializable, Serializable

public class MixtureOfGaussians
extends Object
implements Distribution

Wraps a chi square distribution for purposes of drawing random samples. Methods are provided to allow parameters to be manipulated in an interface.

Version:

$Id: $Id

Author:

josephramsey

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
MixtureOfGaussians(double a, double mean1, double sd1, double mean2, double sd2)	Constructor for MixtureOfGaussians.

Method Summary

Modifier and Type	Method	Description
String	getName()	getName.
int	getNumParameters()	getNumParameters.
double	getParameter(int index)	Returns the index'th parameter.
String	getParameterName(int index)	The name of the index'th parameter, for display purposes.
double	nextRandom()	nextRandom.
static MixtureOfGaussians	serializableInstance()	Generates a simple exemplar of this class to test serialization.
void	setParameter(int index, double value)	Sets the index'th parameter to the given value.
String	toString()	toString.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

MixtureOfGaussians

public MixtureOfGaussians(double a,
 double mean1,
 double sd1,
 double mean2,
 double sd2)

Constructor for MixtureOfGaussians.

Parameters:

a - a double

mean1 - a double

sd1 - a double

mean2 - a double

sd2 - a double

Method Details

serializableInstance

public static MixtureOfGaussians serializableInstance()

Generates a simple exemplar of this class to test serialization.

Returns:

The exemplar.

getNumParameters

public int getNumParameters()

getNumParameters.

Specified by:

getNumParameters in interface Distribution

Returns:

a int

getName

public String getName()

getName.

Specified by:

getName in interface Distribution

Returns:

a String object

setParameter

public void setParameter(int index,
 double value)

Sets the index'th parameter to the given value.

Specified by:

setParameter in interface Distribution

Parameters:

index - Ibid. Must be >= 0 and < # parameters.

value - Ibid.

getParameter

public double getParameter(int index)

Returns the index'th parameter.

Specified by:

getParameter in interface Distribution

Parameters:

index - Ibid. Muist be <= 0 and < # parameters.

Returns:

The Ibid.

getParameterName

public String getParameterName(int index)

The name of the index'th parameter, for display purposes.

Specified by:

getParameterName in interface Distribution

Parameters:

index - Ibid. Must be >= 0 and < # parameters.

Returns:

Ibid.

nextRandom

public double nextRandom()

nextRandom.

Specified by:

nextRandom in interface Distribution

Returns:

a double

toString

public String toString()

toString.

Overrides:

toString in class Object

Returns:

a String object