net.myrrix.common.stats
Class WeightedRunningAverage

java.lang.Object
  net.myrrix.common.stats.WeightedRunningAverage

All Implemented Interfaces:

Serializable, org.apache.mahout.cf.taste.impl.common.RunningAverage

public final class WeightedRunningAverage
extends Object
implements org.apache.mahout.cf.taste.impl.common.RunningAverage, Serializable

Ported from Mahout WeightedRunningAverage but uses int weights.

Author:

Mahout

See Also:

Serialized Form

Constructor Summary

WeightedRunningAverage()

Method Summary

void	addDatum(double datum)
void	addDatum(double datum, int weight)
void	changeDatum(double delta)
void	changeDatum(double delta, int weight)
double	getAverage()
int	getCount()
double	getTotalWeight()
org.apache.mahout.cf.taste.impl.common.RunningAverage	inverse()
void	removeDatum(double datum)
void	removeDatum(double datum, int weight)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

WeightedRunningAverage

public WeightedRunningAverage()

Method Detail

addDatum

public void addDatum(double datum)

Specified by:

addDatum in interface org.apache.mahout.cf.taste.impl.common.RunningAverage

addDatum

public void addDatum(double datum,
                     int weight)

removeDatum

public void removeDatum(double datum)

Specified by:

removeDatum in interface org.apache.mahout.cf.taste.impl.common.RunningAverage

removeDatum

public void removeDatum(double datum,
                        int weight)

changeDatum

public void changeDatum(double delta)

Specified by:

changeDatum in interface org.apache.mahout.cf.taste.impl.common.RunningAverage

changeDatum

public void changeDatum(double delta,
                        int weight)

getTotalWeight

public double getTotalWeight()

getCount

public int getCount()

Specified by:

getCount in interface org.apache.mahout.cf.taste.impl.common.RunningAverage

Returns:

getTotalWeight()

getAverage

public double getAverage()

Specified by:

getAverage in interface org.apache.mahout.cf.taste.impl.common.RunningAverage

inverse

public org.apache.mahout.cf.taste.impl.common.RunningAverage inverse()

Specified by:

inverse in interface org.apache.mahout.cf.taste.impl.common.RunningAverage

Throws:

UnsupportedOperationException

toString

public String toString()

Overrides:

toString in class Object