public class ExponentialMovingAverage
extends java.lang.Object
append(double) every time there is a new measurement, and then can collect summary
statistics from the convenience getters (e.g. getStatistics()). Older values are given exponentially smaller
weight, with a decay factor determined by a "window" size chosen by the caller. The result is a good approximation to
the statistics of the series but with more weight given to recent measurements, so if the statistics change over time
those trends can be approximately reflected.| Constructor and Description |
|---|
ExponentialMovingAverage(int window)
Create a moving average accumulator with decay lapse window provided.
|
| Modifier and Type | Method and Description |
|---|---|
void |
append(double value)
Add a new measurement to the series.
|
int |
getCount() |
double |
getMax() |
double |
getMean() |
double |
getMin() |
double |
getStandardDeviation() |
Statistics |
getStatistics() |
void |
reset() |
java.lang.String |
toString() |
public ExponentialMovingAverage(int window)
1/e.window - the exponential lapse window (number of measurements)public void reset()
public void append(double value)
value - the measurement to appendpublic int getCount()
public double getMean()
public double getStandardDeviation()
public double getMax()
public double getMin()
public Statistics getStatistics()
public java.lang.String toString()
toString in class java.lang.Object