Package edu.cmu.tetrad.util.dist

Class Normal

java.lang.Object

edu.cmu.tetrad.util.dist.Normal

All Implemented Interfaces:

Distribution, TetradSerializable, Serializable

public class Normal
extends Object
implements Distribution

A normal distribution that allows its parameters to be set and allows random sampling. The parameters are 0 = mean, 1 = standard deviation.

Author:

josephramsey

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
Normal(double mean, double sd)

Method Summary

Modifier and Type	Method	Description
String	getName()	Returns the name of the distribution.
int	getNumParameters()	Returns the number of parameters in the distribution.
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()	Returns the next random number from the distribution.
static Normal	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()

Methods inherited from class java.lang.Object

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

Constructor Details

Normal

public Normal(double mean,
 double sd)

Method Details

serializableInstance

public static Normal serializableInstance()

Generates a simple exemplar of this class to test serialization.

Returns:

The exemplar.

getName

public String getName()

Description copied from interface: Distribution

Returns the name of the distribution.

Specified by:

getName in interface Distribution

Returns:

the name.

setParameter

public void setParameter(int index,
 double value)

Description copied from interface: Distribution

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)

Description copied from interface: Distribution

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)

Description copied from interface: Distribution

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.

getNumParameters

public int getNumParameters()

Description copied from interface: Distribution

Returns the number of parameters in the distribution.

Specified by:

getNumParameters in interface Distribution

Returns:

the number of parameters = 2.

nextRandom

public double nextRandom()

Description copied from interface: Distribution

Returns the next random number from the distribution.

Specified by:

nextRandom in interface Distribution

Returns:

the next random sample from the distribution.

toString

public String toString()

Overrides:

toString in class Object