CoolingFactory

<code>CoolingFactory()</code> implements selection
 of a cooling schedule method.
Current support:
<ol>
<li>"ExponentialMultiplicative" returns 
 <code>ExponentialMultiplicativeCooling</code>. (Default)</li>
<li>"LogarithmicMultiplicative" returns 
 <code>LogarithmicMultiplicativeCooling</code>.</li>
<li>"PowerMultiplicative" returns 
 <code>PowerMultiplicativeCooling</code>.
 <code>coolingPower=1</code> specifies linear multiplicative cooling, 
 <code>coolingPower=2</code> specifies quadratic multiplicative cooling.</li>
<li>"PowerAdditive" returns 
 <code>PowerAdditiveCooling</code>.
 <code>coolingPower=1</code> specifies linear additive cooling, 
 <code>coolingPower=2</code> specifies quadratic additive cooling.</li>
<li>"ExponentialAdditive" returns 
 <code>ExponentialAdditiveCooling</code>.</li>
<li>"TrigonometricAdditive" returns 
 <code>TrigonometricAdditiveCooling</code>.</li>
</ol>

This collection of gene representation-independent functions
implements the population layer of extended evolutionary and genetic
algorithms and its support. The population layer consists of functions
for initializing, logging, observing, evaluating a population of genes,
as well as of computing the next population. For parallel evaluation of a
population of genes 4 execution models - named Sequential, MultiCore,
FutureApply, and Cluster - are provided. They are implemented by
configuring the lapply() function. The execution model FutureApply can be
externally configured as recommended by Bengtsson (2021)
<doi:10.32614/RJ-2021-048>. Configurable acceptance rules and cooling
schedules (see Kirkpatrick, S., Gelatt, C. D. J, and Vecchi, M. P. (1983)
<doi:10.1126/science.220.4598.671>, and Aarts, E., and Korst, J.
(1989, ISBN:0-471-92146-7) offer simulated annealing or greedy randomized
approximate search procedure elements. Adaptive crossover and mutation
rates depending on population statistics generalize the approach of
Stanhope, S. A. and Daida, J. M. (1996, ISBN:0-18-201-031-7).
For xega's architecture,
see Geyer-Schulz, A. (2025) <doi:10.5445/IR/1000187255>.

Andreas Geyer-Schulz

xegaPopulation

Genetic Population Level Functions

CoolingFactory function

<dl><dt>method</dt>
<dd>A string specifying the cooling schedule.</dd></dl>

Arguments

Configure the cooling schedule of the acceptance 
function of a genetic algorithm. — CoolingFactory

<dl>

<dt>method</dt>
<dd>A string specifying the cooling schedule.</dd>

</dl>

CoolingFactory: Configure the cooling schedule of the acceptance function of a genetic algorithm.

Description

Usage

Value

Arguments

See Also