de.lmu.ifi.dbs.elki.math.statistics.distribution

Interface Distribution

All Known Implementing Classes:

ChiDistribution, ChiSquaredDistribution, ConstantDistribution, GammaDistribution, NormalDistribution, UniformDistribution

public interface Distribution

Interface for a simple distribution generator with a PDF, i.e. it can also compute a density

Method Summary

Methods

Modifier and Type	Method and Description
double	cdf(double val) Return the cumulative density function at the given value.
double	nextRandom() Generate a new random value
double	pdf(double val) Return the density of an existing value
String	toString() Describe the distribution

Method Detail

nextRandom

double nextRandom()

Generate a new random value

Returns:

new random value

pdf

double pdf(double val)

Return the density of an existing value

Parameters:

val - existing value

Returns:

distribution density

cdf

double cdf(double val)

Return the cumulative density function at the given value.

Parameters:

val - existing value

Returns:

cumulative density

toString

String toString()

Describe the distribution

Overrides:

toString in class Object

Returns:

description