databionics.esom.cooling
Class ExponentialCooling

java.lang.Object
  databionics.esom.cooling.Cooling
      databionics.esom.cooling.CachedCooling
          databionics.esom.cooling.ExponentialCooling

public class ExponentialCooling
extends CachedCooling

Exponential cooling of a parameter.

Field Summary

protected double	diff difference between succesive x values
protected static org.apache.log4j.Logger	log interface to log4j system

Fields inherited from class databionics.esom.cooling.CachedCooling

cache, offset

Fields inherited from class databionics.esom.cooling.Cooling

end, start, steps

Constructor Summary

ExponentialCooling(double start, int steps, double end)
Create a new exponential cooling object

Method Summary

protected double	calculate(int step) Calculate the parameter value for this step: value(step) = start * exp(step*ln(end/start)/steps)
protected void	init() Initialize constants and the cache.

Methods inherited from class databionics.esom.cooling.CachedCooling

fillCache, get

Methods inherited from class databionics.esom.cooling.Cooling

getAsInt

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.apache.log4j.Logger log

interface to log4j system

diff

protected double diff

difference between succesive x values

Constructor Detail

ExponentialCooling

public ExponentialCooling(double start,
                          int steps,
                          double end)

Create a new exponential cooling object

Parameters:

start - Initial value of the parameter

steps - Steps towards the final value of the parameter

end - Final value of the parameter

Method Detail

init

protected void init()

Initialize constants and the cache.

Overrides:

init in class CachedCooling

Parameters:

offset -

calculate

protected double calculate(int step)

Calculate the parameter value for this step: value(step) = start * exp(step*ln(end/start)/steps)

Specified by:

calculate in class Cooling

Parameters:

step - current step ([0..steps-1])