Package org.opt4j.optimizer.sa

Class CoolingScheduleExponential

java.lang.Object

org.opt4j.optimizer.sa.CoolingScheduleExponential

All Implemented Interfaces:

CoolingSchedule

public class CoolingScheduleExponential
extends Object
implements CoolingSchedule

The CoolingScheduleExponential is a CoolingSchedule for the SimulatedAnnealing.

tn - final temperature
t0 - initial temperature
i - current iteration
n - maximal number of iterations
a - alpha value

The current temperature is calculated by tn + t0 * a^i.

Field Summary

Fields

Modifier and Type	Field	Description
protected final double	alpha
protected final double	t0
protected final double	tn

Constructor Summary

Constructors

Constructor	Description
CoolingScheduleExponential(double t0, double tn, double alpha)	Constructs a new CoolingScheduleExponential.

Method Summary

Modifier and Type	Method	Description
double	getTemperature(int i, int n)	Returns the temperature for the iteration i of the maximal number of iterations n.

Methods inherited from class java.lang.Object

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

Field Details

t0

protected final double t0

tn

protected final double tn

alpha

protected final double alpha

Constructor Details

CoolingScheduleExponential

@Inject
public CoolingScheduleExponential(double t0,
 double tn,
 double alpha)

Constructs a new CoolingScheduleExponential.

Parameters:

t0 - the initial temperature (using namespace CoolingSchedule)

tn - the final temperature (using namespace CoolingSchedule ) )

alpha - the alpha value

Method Details

getTemperature

public double getTemperature(int i,
 int n)

Description copied from interface: CoolingSchedule

Returns the temperature for the iteration i of the maximal number of iterations n.

Specified by:

getTemperature in interface CoolingSchedule

Parameters:

i - the current iteration

n - the maximal number of iterations

Returns:

the temperature for the current iteration