Models

Class Distributions

java.lang.Object

Models.Distributions

public class Distributions
extends java.lang.Object

Class to calculate stationary and quasi-stationary distributions

Version:

2.0

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Distributions.Calculation Enumeration of the different methods of calculating a distribution
static class	Distributions.DistributionsException Exception for use there is a problem calculating a distribution

Constructor Summary

Constructors

Constructor and Description
Distributions()

Method Summary

Methods

Modifier and Type	Method and Description
static double[]	quasiStationary(SquareMatrix m) Calculates a quasi-stationary distribution from a given rate matrix.
static void	setMethod(Distributions.Calculation m) Sets the calculation method to be used when calculating distributions
static double[]	stationary(SquareMatrix m) Calculates a stationary distribution from a given rate matrix.

Methods inherited from class java.lang.Object

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

Constructor Detail

Distributions

public Distributions()

Method Detail

quasiStationary

public static double[] quasiStationary(SquareMatrix m)
                                throws Distributions.DistributionsException

Calculates a quasi-stationary distribution from a given rate matrix. Uses the method set by the last call to setMethod(Models.Distributions.Calculation). The state in position zero is assumed to be the sink state

Parameters:

m - The rate matrix

Returns:

The quasi-stationary distribution

Throws:

Distributions.DistributionsException - If the distribution can't be calculated

stationary

public static double[] stationary(SquareMatrix m)
                           throws Distributions.DistributionsException

Calculates a stationary distribution from a given rate matrix. Uses the method set by the last call to setMethod(Models.Distributions.Calculation).

Parameters:

m - The rate matrix

Returns:

The stationary distribution

Throws:

Distributions.DistributionsException - If the distibution can't be calculated

setMethod

public static void setMethod(Distributions.Calculation m)

Sets the calculation method to be used when calculating distributions

Parameters:

m - The calculation method to be used