org.apache.commons.math.distribution

Interface GammaDistribution

All Superinterfaces:

ContinuousDistribution, Distribution, HasDensity<java.lang.Double>

All Known Implementing Classes:

GammaDistributionImpl

public interface GammaDistribution
extends ContinuousDistribution, HasDensity<java.lang.Double>

The Gamma Distribution.

References:

• Gamma Distribution

Method Summary

Modifier and Type	Method and Description
double	density(java.lang.Double x) Return the probability density for a particular point.
double	getAlpha() Access the shape parameter, alpha
double	getBeta() Access the scale parameter, beta
void	setAlpha(double alpha) Deprecated. as of v2.1
void	setBeta(double beta) Deprecated. as of v2.1

Methods inherited from interface org.apache.commons.math.distribution.ContinuousDistribution

inverseCumulativeProbability

Methods inherited from interface org.apache.commons.math.distribution.Distribution

cumulativeProbability, cumulativeProbability

Method Detail

setAlpha

@Deprecated
void setAlpha(double alpha)

Deprecated. as of v2.1

Modify the shape parameter, alpha.

Parameters:

alpha - the new shape parameter.

getAlpha

double getAlpha()

Access the shape parameter, alpha

Returns:

alpha.

setBeta

@Deprecated
void setBeta(double beta)

Deprecated. as of v2.1

Modify the scale parameter, beta.

Parameters:

beta - the new scale parameter.

getBeta

double getBeta()

Access the scale parameter, beta

Returns:

beta.

density

double density(java.lang.Double x)

Return the probability density for a particular point.

Specified by:

density in interface HasDensity<java.lang.Double>

Parameters:

x - The point at which the density should be computed.

Returns:

The pdf at point x.