opennlp.tools.util.eval
Class Mean

java.lang.Object
  opennlp.tools.util.eval.Mean

public class Mean
extends Object

Calculates the arithmetic mean of values added with the add(double) method.

Constructor Summary

Mean()

Method Summary

void	add(double value) Adds a value to the arithmetic mean.
void	add(double value, long count) Adds a value count times to the arithmetic mean.
long	count() Retrieves the number of times a value was added to the mean.
double	mean() Retrieves the mean of all values added with add(double) or 0 if there are zero added values.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Mean

public Mean()

Method Detail

add

public void add(double value)

Adds a value to the arithmetic mean.

Parameters:

value - the value which should be added to the arithmetic mean.

add

public void add(double value,
                long count)

Adds a value count times to the arithmetic mean.

Parameters:

value - the value which should be added to the arithmetic mean.

count - number of times the value should be added to arithmetic mean.

mean

public double mean()

Retrieves the mean of all values added with add(double) or 0 if there are zero added values.

count

public long count()

Retrieves the number of times a value was added to the mean.

toString

public String toString()

Overrides:

toString in class Object