Package jsl.observers.variable

Class AntitheticEstimator

java.lang.Object

jsl.observers.ModelElementObserver

jsl.observers.variable.AntitheticEstimator

All Implemented Interfaces:

ObserverIfc, GetNameIfc, IdentityIfc

public class AntitheticEstimator
extends ModelElementObserver

The purpose of this class is to observe response variables in order to form pairs across replications and to compute statistics across the pairs. If Y(1), Y(2), .., Y(j), .., Y(n) represent observations from the jth replication, then this class averages adjacent pairs X(1) = (Y(1)+Y(2))/2, X(2) = (Y(3)+Y(4))/2, for m = floor(n/2) pairs X(i) = (Y(2j-1) + Y(2j))/2 for j = 1, 2, 3, ... floor(n/2) If the experiment has been set to control the streams using antithetic streams for odd and even replications, then the resulting estimate from this class will implement the variance reduction technique called antithetic variates. The class is designed as an observer that can be attached to individual response variables

Field Summary

Fields inherited from class jsl.observers.ModelElementObserver

myName

Constructor Summary

Constructors

Constructor	Description
AntitheticEstimator()
AntitheticEstimator(java.lang.String name)

Method Summary

Modifier and Type	Method	Description
protected void	beforeExperiment(ModelElement m, java.lang.Object arg)
protected ExperimentGetIfc	getExperiment()	Returns the experiment for the simulation
Statistic	getStatistic()
protected void	replicationEnded(ModelElement m, java.lang.Object arg)

Methods inherited from class jsl.observers.ModelElementObserver

afterExperiment, afterReplication, beforeReplication, getId, getModelElement, getName, initialize, montecarlo, removedFromModel, setModelElement, setName, timedUpdate, toString, update, update, warmUp

Methods inherited from class java.lang.Object

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

Constructor Detail

AntitheticEstimator

public AntitheticEstimator()

AntitheticEstimator

public AntitheticEstimator(java.lang.String name)

Method Detail

getExperiment

protected final ExperimentGetIfc getExperiment()

Returns the experiment for the simulation

Returns:

the experiment

beforeExperiment

protected void beforeExperiment(ModelElement m,
                                java.lang.Object arg)

Overrides:

beforeExperiment in class ModelElementObserver

replicationEnded

protected void replicationEnded(ModelElement m,
                                java.lang.Object arg)

Overrides:

replicationEnded in class ModelElementObserver

getStatistic

public final Statistic getStatistic()