edu.ucla.stat.SOCR.distributions

Class InverseGammaDistribution

java.lang.Object

edu.ucla.stat.SOCR.core.SOCRValueSettable

edu.ucla.stat.SOCR.core.Distribution

edu.ucla.stat.SOCR.distributions.InverseGammaDistribution

All Implemented Interfaces:

IValueSettable, Pluginable, java.util.Observer

public class InverseGammaDistribution
extends Distribution

Gamma distribution with a specified shape parameter and scale parameter. http://en.wikipedia.org/wiki/Inverse-gamma_distribution .

Field Summary

Fields inherited from class edu.ucla.stat.SOCR.core.Distribution

applet, CONTINUOUS, DISCRETE, MAXMGFXVAL, MAXMGFYVAL, MINMGFXVAL, MIXED, name

Constructor Summary

Constructors

Constructor and Description
InverseGammaDistribution() Default Constructor: creates a new gamma distribution with shape parameter 1 and scale parameter 1
InverseGammaDistribution(double[] distData)
InverseGammaDistribution(double a, double b) General Constructor: creates a new gamma distribution with shape parameter k and scale parameter b
InverseGammaDistribution(float[] distData)

Method Summary

Methods

Modifier and Type	Method and Description
double	getDensity(double x) Density function
double	getMean() Mean
double	getMode() Mode
java.lang.String	getOnlineDescription() This method returns an online description of this distribution.
double	getScale() Get scale parameters
double	getShape() Get shape parameters
double	getVariance() Variance
void	initialize() used for some subclass to initialize before being used
void	paramEstimate(double[] distData)
void	setParameters(double a, double b) Set parameters and assign the default partition
void	valueChanged()

Methods inherited from class edu.ucla.stat.SOCR.core.Distribution

addObserver, betaCDF, comb, factorial, findGFRoot, findRoot, gamma, gammaCDF, getCDF, getDisplayPane, getDomain, getFailureRate, getGFDerivative, getGFSecondDerivative, getInstance, getLocalHelp, getMaxDensity, getMean, getMedian, getMGF, getMgfDomain, getName, getPGF, getPGFDomain, getQuantile, getSampleMoment, getSD, getSOCRDistributionFunctors, getSOCRDistributions, getType, getVariance, inverseCDF, logGamma, perm, sampleMean, sampleVar, setApplet, setDomain, setDomain, setMGFDomain, setMGFDomain, setMGFParameters, setMGFParameters, setMGFParameters, setMGFParameters, setParameters, setPGFDomain, setPGFDomain, setPGFParameters, setPGFParameters, setPGFParameters, setPGFParameters, simulate, update, valueChanged

Methods inherited from class edu.ucla.stat.SOCR.core.SOCRValueSettable

createComponentSetter, createValueSetter, createValueSetter, createValueSetter, createValueSetter, getComponentSetter, getComponentSetters, getValueSetter, getValueSetters

Methods inherited from class java.lang.Object

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

Constructor Detail

InverseGammaDistribution

public InverseGammaDistribution(double[] distData)

InverseGammaDistribution

public InverseGammaDistribution(float[] distData)

InverseGammaDistribution

public InverseGammaDistribution(double a,
                        double b)

General Constructor: creates a new gamma distribution with shape parameter k and scale parameter b

InverseGammaDistribution

public InverseGammaDistribution()

Default Constructor: creates a new gamma distribution with shape parameter 1 and scale parameter 1

Method Detail

initialize

public void initialize()

Description copied from class: Distribution

used for some subclass to initialize before being used

Overrides:

initialize in class Distribution

valueChanged

public void valueChanged()

Overrides:

valueChanged in class Distribution

setParameters

public void setParameters(double a,
                 double b)

Set parameters and assign the default partition

getShape

public double getShape()

Get shape parameters

getScale

public double getScale()

Get scale parameters

getDensity

public double getDensity(double x)

Density function

Specified by:

getDensity in class Distribution

getMean

public double getMean()

Mean

Overrides:

getMean in class Distribution

getMode

public double getMode()

Mode

getVariance

public double getVariance()

Variance

Overrides:

getVariance in class Distribution

getOnlineDescription

public java.lang.String getOnlineDescription()

This method returns an online description of this distribution.

Overrides:

getOnlineDescription in class Distribution

paramEstimate

public void paramEstimate(double[] distData)

Overrides:

paramEstimate in class Distribution