freenet.support.math

Class MedianMeanRunningAverage

java.lang.Object

freenet.support.math.MedianMeanRunningAverage

All Implemented Interfaces:

RunningAverage, java.io.Serializable, java.lang.Cloneable

public final class MedianMeanRunningAverage
extends java.lang.Object
implements RunningAverage, java.lang.Cloneable

A RunningAverage that tracks both the median and mean of a series of values. WARNING: Uses memory and proportional to the number of reports! Only for debugging! (Also uses CPU time O(N log N) with the number of reports in currentValue()).

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MedianMeanRunningAverage()
MedianMeanRunningAverage(MedianMeanRunningAverage average)

Method Summary

Modifier and Type	Method and Description
MedianMeanRunningAverage	clone() Copy the RunningAverage (create a snapshot).
long	countReports()
double	currentValue()
double	meanValue()
void	report(double d)
void	report(long d)
java.lang.String	toString()
double	valueIfReported(double r) Get what currentValue() would be if we reported some given value

Methods inherited from class java.lang.Object

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

Constructor Detail

MedianMeanRunningAverage

public MedianMeanRunningAverage()

MedianMeanRunningAverage

public MedianMeanRunningAverage(MedianMeanRunningAverage average)

Parameters:

average -

Method Detail

clone

public MedianMeanRunningAverage clone()

Description copied from interface: RunningAverage

Copy the RunningAverage (create a snapshot). Deep copy, the new RA won't change when the first one does. Will synchronize on the original during the copy process.

Specified by:

clone in interface RunningAverage

Overrides:

clone in class java.lang.Object

countReports

public long countReports()

Specified by:

countReports in interface RunningAverage

Returns:

the total number of reports on this RunningAverage so far. Used for weighted averages, confidence/newbieness estimation etc.

currentValue

public double currentValue()

Specified by:

currentValue in interface RunningAverage

Returns:

report

public void report(double d)

Specified by:

report in interface RunningAverage

Parameters:

d -

report

public void report(long d)

Specified by:

report in interface RunningAverage

Parameters:

d -

valueIfReported

public double valueIfReported(double r)

Description copied from interface: RunningAverage

Get what currentValue() would be if we reported some given value

Specified by:

valueIfReported in interface RunningAverage

Parameters:

r - the value to mimic reporting

Returns:

the output of currentValue() if we were to report r

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

meanValue

public double meanValue()

Returns: