com.numericalmethod.suanshu.stats.descriptive
Class SynchronizedStatistic

java.lang.Object
  com.numericalmethod.suanshu.stats.descriptive.SynchronizedStatistic

All Implemented Interfaces:

Statistic

public class SynchronizedStatistic
extends java.lang.Object
implements Statistic

This provides a thread-safe version of Statistic by synchronizing all public methods so that only one thread at a time can access the instance.

This is essentially the same principle used by Java's synchronized collection class.

See Also:

"Chapter 5. Java Concurrency in Practice. Brian Goetz, Tim Peierls, Joshua Bloch and Joseph Bowbeer."

Method Summary

void	addData(double... data) Recompute the statistic, incrementally if possible.
long	N() Get the size of the sample.
double	value() Get the value of the statistic.

Methods inherited from class java.lang.Object

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

Method Detail

addData

public void addData(double... data)

Description copied from interface: Statistic

Recompute the statistic, incrementally if possible.

Specified by:

addData in interface Statistic

Parameters:

data - an array of new items

value

public double value()

Description copied from interface: Statistic

Get the value of the statistic.

Specified by:

value in interface Statistic

Returns:

the statistic

N

public long N()

Description copied from interface: Statistic

Get the size of the sample.

Specified by:

N in interface Statistic

Returns:

the sample size