eg

Class Musicians

java.lang.Object

eg.Musicians

public class Musicians
extends java.lang.Object

Is the 27 Club a thing or is it an urban myth? Simple analysis of the age at death of musicians. Note, please do not ask me for the raw data — that belongs to Professor Dianna Kenny, University of Sydney. Also see [the book] and the [home page].

Field Summary

Fields

Modifier and Type	Field and Description
static Type.Tuple	INT2 Each row of the input is: INT2 = int x int, being age & frequency.
static Value.Real	mLwb Bounds on mean(s) and standard deviation(s).
static Value.Real	mUpb Bounds on mean(s) and standard deviation(s).
static Value.Real	sLwb Bounds on mean(s) and standard deviation(s).
static Value.Real	sUpb Bounds on mean(s) and standard deviation(s).

Constructor Summary

Constructors

Constructor and Description
Musicians()

Method Summary

Modifier and Type	Method and Description
static void	analyse(java.lang.String title, Vector ds) Fit a Mixture of one or more Normals to data-set 'ds'.
static Vector	getData(java.lang.String filename) Get the data from the named file; return a Vector of ages weighted by frequency.
static Mixture.M	improve(Mixture.Est est, Mixture.M mx1, Vector ds) Starting with mixture model 'mx1', use est.EM(mx1,ds) to improve it.
static void	main(java.lang.String[] argv) Simple analysis of a data-set, [(ageAtDeath, frequency)], from a given file or from file ../data/musicians-age-freq.
static void	results(Model m, Vector ds) Display Model 'm', its two-part message length, and the negative log likelihood of data-set 'ds'.
static java.lang.String	x2S(double x) A double compactly to at least 4 significant figures.

Methods inherited from class java.lang.Object

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

Field Detail

INT2

public static Type.Tuple INT2

Each row of the input is: INT2 = int x int, being age & frequency.

mLwb

public static Value.Real mLwb

Bounds on mean(s) and standard deviation(s).

mUpb

public static Value.Real mUpb

Bounds on mean(s) and standard deviation(s).

sLwb

public static Value.Real sLwb

Bounds on mean(s) and standard deviation(s).

sUpb

public static Value.Real sUpb

Bounds on mean(s) and standard deviation(s).

Constructor Detail

Musicians

public Musicians()

Method Detail

x2S

public static java.lang.String x2S(double x)

A double compactly to at least 4 significant figures.

getData

public static Vector getData(java.lang.String filename)

Get the data from the named file; return a Vector of ages weighted by frequency.

analyse

public static void analyse(java.lang.String title,
                           Vector ds)

Fit a Mixture of one or more Normals to data-set 'ds'.

results

public static void results(Model m,
                           Vector ds)

Display Model 'm', its two-part message length, and the negative log likelihood of data-set 'ds'.

improve

public static Mixture.M improve(Mixture.Est est,
                                Mixture.M mx1,
                                Vector ds)

Starting with mixture model 'mx1', use est.EM(mx1,ds) to improve it.

main

public static void main(java.lang.String[] argv)

Simple analysis of a data-set, [(ageAtDeath, frequency)], from a given file or from file ../data/musicians-age-freq.