uk.ac.liv.util
Class HeavyweightDistribution

java.lang.Object
  uk.ac.liv.util.CummulativeDistribution
      uk.ac.liv.util.HeavyweightDistribution

All Implemented Interfaces:

java.lang.Cloneable, Distribution, Resetable, java.io.Serializable

public class HeavyweightDistribution

extends CummulativeDistribution

An distribution which keeps actual cases in memory as well as updating moments dynamically. This implementation of a Distribution is capable of calculating trimmed means. Note that calculating the trimmed mean results in a sorting operation, and hence is not as efficient as calculating the untrimmed mean.

Version:

$Revision: 1.6 $

Author:

Steve Phelps

See Also:

Serialized Form

Field Summary

protected gnu.trove.TDoubleArrayList	data
protected boolean	hasChanged
protected double	trimmedMean

Fields inherited from class uk.ac.liv.util.CummulativeDistribution

max, min, n, total, totalSq, varName

Constructor Summary

HeavyweightDistribution(java.lang.String name)

Method Summary

double	getTrimmedMean(double p)
void	initialise()
void	newData(double datum) Add a new datum to the series.

Methods inherited from class uk.ac.liv.util.CummulativeDistribution

clone, getMax, getMean, getMin, getN, getName, getStdDev, getStdDev, getTotal, getVarCoef, getVariance, getVariance, log, reset, toString

Methods inherited from class java.lang.Object

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

Field Detail

data

protected gnu.trove.TDoubleArrayList data

trimmedMean

protected double trimmedMean

hasChanged

protected boolean hasChanged

Constructor Detail

HeavyweightDistribution

public HeavyweightDistribution(java.lang.String name)

Method Detail

initialise

public void initialise()

Overrides:

initialise in class CummulativeDistribution

newData

public void newData(double datum)

Description copied from class: CummulativeDistribution

Add a new datum to the series.

Specified by:

newData in interface Distribution

Overrides:

newData in class CummulativeDistribution

getTrimmedMean

public double getTrimmedMean(double p)

Specified by:

getTrimmedMean in interface Distribution

Overrides:

getTrimmedMean in class CummulativeDistribution