com.cloudera.oryx.common.math

Class DoubleWeightedMean

java.lang.Object

org.apache.commons.math3.stat.descriptive.AbstractUnivariateStatistic

org.apache.commons.math3.stat.descriptive.AbstractStorelessUnivariateStatistic

com.cloudera.oryx.common.math.DoubleWeightedMean

All Implemented Interfaces:

Serializable, org.apache.commons.math3.stat.descriptive.StorelessUnivariateStatistic, org.apache.commons.math3.stat.descriptive.UnivariateStatistic, org.apache.commons.math3.util.MathArrays.Function

public final class DoubleWeightedMean
extends org.apache.commons.math3.stat.descriptive.AbstractStorelessUnivariateStatistic
implements Serializable

A weighted mean implementation for floating-point weights, following the Commons Math3 framework.

This class is not thread-safe.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
DoubleWeightedMean()

Method Summary

Modifier and Type	Method and Description
void	clear()
DoubleWeightedMean	copy()
boolean	equals(Object o)
long	getN()
double	getResult()
int	hashCode()
void	increment(double datum)
void	increment(double datum, double weight)
String	toString()

Methods inherited from class org.apache.commons.math3.stat.descriptive.AbstractStorelessUnivariateStatistic

evaluate, evaluate, incrementAll, incrementAll

Methods inherited from class org.apache.commons.math3.stat.descriptive.AbstractUnivariateStatistic

evaluate, getData, getDataRef, setData, setData, test, test, test, test

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DoubleWeightedMean

public DoubleWeightedMean()

Method Detail

copy

public DoubleWeightedMean copy()

Specified by:

copy in interface org.apache.commons.math3.stat.descriptive.StorelessUnivariateStatistic

Specified by:

copy in interface org.apache.commons.math3.stat.descriptive.UnivariateStatistic

Overrides:

copy in class org.apache.commons.math3.stat.descriptive.AbstractStorelessUnivariateStatistic

clear

public void clear()

Specified by:

clear in interface org.apache.commons.math3.stat.descriptive.StorelessUnivariateStatistic

Specified by:

clear in class org.apache.commons.math3.stat.descriptive.AbstractStorelessUnivariateStatistic

getResult

public double getResult()

Specified by:

getResult in interface org.apache.commons.math3.stat.descriptive.StorelessUnivariateStatistic

Specified by:

getResult in class org.apache.commons.math3.stat.descriptive.AbstractStorelessUnivariateStatistic

getN

public long getN()

Specified by:

getN in interface org.apache.commons.math3.stat.descriptive.StorelessUnivariateStatistic

increment

public void increment(double datum)

Specified by:

increment in interface org.apache.commons.math3.stat.descriptive.StorelessUnivariateStatistic

Specified by:

increment in class org.apache.commons.math3.stat.descriptive.AbstractStorelessUnivariateStatistic

Parameters:

datum - new datum to add to the mean, with weight 1

increment

public void increment(double datum,
                      double weight)

Parameters:

datum - new datum to add to the mean

weight - weight of the new datum

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class org.apache.commons.math3.stat.descriptive.AbstractStorelessUnivariateStatistic

equals

public boolean equals(Object o)

Overrides:

equals in class org.apache.commons.math3.stat.descriptive.AbstractStorelessUnivariateStatistic