tr.edu.bilkent.cs.partitioning.ccp.hetccp.cp

Class RunningStatisticsImpl

java.lang.Object

tr.edu.bilkent.cs.partitioning.ccp.hetccp.cp.RunningStatisticsImpl

All Implemented Interfaces:

RunningStatistics

public class RunningStatisticsImpl
extends java.lang.Object
implements RunningStatistics

RunningStatistics implementation. This implementation is O(1) in add observation, while O(1) in getXXX(). Date: Jan 30, 2007

Constructor Summary

Constructors

Constructor and Description
RunningStatisticsImpl()

Method Summary

Modifier and Type	Method and Description
void	addObservation(double x) Adds an observation to the statistics.
double	getCoefficientOfVariance() coefficient of variance
double	getMean() Returns the mean of observations.
double	getStandardDeviation() standard deviation.
double	getVariance() variance of observations.

Methods inherited from class java.lang.Object

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

Constructor Detail

RunningStatisticsImpl

public RunningStatisticsImpl()

Method Detail

addObservation

public void addObservation(double x)

Description copied from interface: RunningStatistics

Adds an observation to the statistics.

Specified by:

addObservation in interface RunningStatistics

Parameters:

x - observation

getMean

public double getMean()

Description copied from interface: RunningStatistics

Returns the mean of observations.

Specified by:

getMean in interface RunningStatistics

Returns:

mean

getVariance

public double getVariance()

Description copied from interface: RunningStatistics

variance of observations.

Specified by:

getVariance in interface RunningStatistics

Returns:

variance.

getStandardDeviation

public double getStandardDeviation()

Description copied from interface: RunningStatistics

standard deviation.

Specified by:

getStandardDeviation in interface RunningStatistics

Returns:

standard deviation

getCoefficientOfVariance

public double getCoefficientOfVariance()

Description copied from interface: RunningStatistics

coefficient of variance

Specified by:

getCoefficientOfVariance in interface RunningStatistics

Returns:

coefficient of variance