pl.edu.agh.age.compute.ea.rand

Class GaussianGenerator

java.lang.Object

pl.edu.agh.age.compute.ea.rand.GaussianGenerator

All Implemented Interfaces:

DoubleRandomGenerator, DoubleSymmetricGenerator

public final class GaussianGenerator
extends java.lang.Object
implements DoubleSymmetricGenerator

An implementation of DoubleSymmetricGenerator which generates values on the base of a Gaussian distribution.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	GaussianGenerator.NormalCdf Helper class, encapsulate the inverse of the cdf of a normal distribution.

Field Summary

Fields

Modifier and Type	Field and Description
private static double	DEFAULT_LOCATION
private static double	DEFAULT_SCALE
private NormalizedDoubleRandomGenerator	rand

Constructor Summary

Constructors

Constructor and Description
GaussianGenerator(NormalizedDoubleRandomGenerator rand)

Method Summary

Modifier and Type	Method and Description
double	lowerDouble() Specifies the lower bound of the values that can be returned by nextDouble().
double	nextDouble() Returns a random double value arbitrarily distributed in the range [lowerDouble(), upperDouble()].
double	nextDouble(double location, double scale) Returns a random double value arbitrarily distributed in the range [lowerDouble(), upperDouble()], accordingly to the provided parameters.
double	upperDouble() Specifies the upper bound of the values that can be returned by nextDouble().

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_LOCATION

private static final double DEFAULT_LOCATION

See Also:

Constant Field Values

DEFAULT_SCALE

private static final double DEFAULT_SCALE

See Also:

Constant Field Values

rand

private final NormalizedDoubleRandomGenerator rand

Constructor Detail

GaussianGenerator

public GaussianGenerator(NormalizedDoubleRandomGenerator rand)

Method Detail

nextDouble

public double nextDouble()

Description copied from interface: DoubleRandomGenerator

Returns a random double value arbitrarily distributed in the range [lowerDouble(), upperDouble()].

Specified by:

nextDouble in interface DoubleRandomGenerator

Returns:

A random value.

nextDouble

public double nextDouble(double location,
                         double scale)

Description copied from interface: DoubleSymmetricGenerator

Returns a random double value arbitrarily distributed in the range [lowerDouble(), upperDouble()], accordingly to the provided parameters.

Specified by:

nextDouble in interface DoubleSymmetricGenerator

Parameters:

location - The location of the distribution.

scale - The scale of the distribution

Returns:

A random value.

lowerDouble

public double lowerDouble()

Description copied from interface: DoubleRandomGenerator

Specifies the lower bound of the values that can be returned by nextDouble().

Specified by:

lowerDouble in interface DoubleRandomGenerator

Returns:

This generator’s lower bound.

upperDouble

public double upperDouble()

Description copied from interface: DoubleRandomGenerator

Specifies the upper bound of the values that can be returned by nextDouble().

Specified by:

upperDouble in interface DoubleRandomGenerator

Returns:

This generator’s upper bound.