org.apache.mahout.math.jet.random

Class AbstractContinousDistribution

java.lang.Object

org.apache.mahout.math.function.DoubleFunction

org.apache.mahout.math.jet.random.AbstractDistribution

org.apache.mahout.math.jet.random.AbstractContinousDistribution

All Implemented Interfaces:

IntFunction

Direct Known Subclasses:

Exponential, Gamma, Normal, Uniform

public abstract class AbstractContinousDistribution
extends AbstractDistribution

Abstract base class for all continuous distributions. Continuous distributions have probability density and a cumulative distribution functions.

Constructor Summary

Constructors

Constructor and Description
AbstractContinousDistribution()

Method Summary

Methods

Modifier and Type	Method and Description
double	cdf(double x)
int	nextInt()
double	pdf(double x)

Methods inherited from class org.apache.mahout.math.jet.random.AbstractDistribution

apply, apply, getRandomGenerator, nextDouble, randomDouble, setRandomGenerator

Methods inherited from class org.apache.mahout.math.function.DoubleFunction

isDensifying

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractContinousDistribution

public AbstractContinousDistribution()

Method Detail

cdf

public double cdf(double x)

pdf

public double pdf(double x)

nextInt

public int nextInt()

Specified by:

nextInt in class AbstractDistribution

Returns:

A random number from the distribution; returns (int) Math.round(nextDouble()). Override this method if necessary.