IRPact_modellierung.distributions

Class BoundedUnivariateDistribution

java.lang.Object

IRPact_modellierung.distributions.Distribution

IRPact_modellierung.distributions.UnivariateDistribution

IRPact_modellierung.distributions.BoundedUnivariateDistribution

Direct Known Subclasses:

FiniteMassPointsDiscreteDistribution

public abstract class BoundedUnivariateDistribution
extends UnivariateDistribution

Abstraction to model a univariate distribution that has a lower and an upper bound. The implementation of the bounded univariate distribution is used to generate values; However this abstraction checks that the values are within the specified bounds, and will otherwise generate values until this is achieved. Thus the modeler has to be careful that legal values can be derived from the distribution in a reasonable amount of time (meaning that a reasonable amount of mass of the distribution should be concentrated within the [lowerBounds, upperBounds]

Field Summary

Fields

Modifier and Type	Field and Description
protected double	lowerBound
protected double	upperBound

Fields inherited from class IRPact_modellierung.distributions.Distribution

name

Constructor Summary

Constructors

Constructor and Description
BoundedUnivariateDistribution(java.lang.String name, double lowerBound, double upperBound) Generates a univariate distribution generating values within the interval [lowerBound, upperBound]

Method Summary

Modifier and Type	Method and Description
double	draw() Draws a value from the underlying distribution.
abstract double	drawValue() Method that generates the values from the underlying distributions for the draw-method.
double	getLowerBound()
double	getUpperBound()

Methods inherited from class IRPact_modellierung.distributions.Distribution

getName, toString

Methods inherited from class java.lang.Object

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

Field Detail

lowerBound

protected double lowerBound

upperBound

protected double upperBound

Constructor Detail

BoundedUnivariateDistribution

public BoundedUnivariateDistribution(java.lang.String name,
                                     double lowerBound,
                                     double upperBound)
                              throws java.lang.IllegalArgumentException

Generates a univariate distribution generating values within the interval [lowerBound, upperBound]

Parameters:

name - Name of the distribution

lowerBound - The lower bound for the distribution (guarantees that derived values will be >= lowerBound)

upperBound - The upper bound for the distribution (guarantees that derived values will be <= upperBound)

Throws:

java.lang.IllegalArgumentException - Will be thrown when lowerBound > upperBound

Method Detail

draw

public double draw()

Draws a value from the underlying distribution. Will keep drawing values until it is provided with a legal value (that lies in [lowerBound, upperBound]).

Specified by:

draw in class UnivariateDistribution

Returns:

Legal value of the distribution (within [lowerBound, upperBound]).

drawValue

public abstract double drawValue()

Method that generates the values from the underlying distributions for the draw-method. Will be called to derive values of instances

Returns:

A value provided by the underlying distribution

getLowerBound

public double getLowerBound()

getUpperBound

public double getUpperBound()