public void doInit() {
// Call super method
super.doInit();
// Set number of recombinator repetitions
setNumberOfRecombinatorRepetitions();
// Initialize selectors used in algorithm
bettersSelector = new BettersSelector(this);
parentsSelector = new RandomSelector(this);
updateSelector = new RouletteSelector(this);
}
/**
* Configuration method.
*
* <p>Configuration parameters for BaseAlgorithm class are:
*
* <ul>
* <li><code>species: ISpecies (complex)</code> Individual species
* <li><code>evaluator: IEvaluator (complex)</code> Individuals evaluator
* <li><code>population-size: int</code> Population size
* <li><code>max-of-generations: int</code> Maximum number of generations
* <li><code>provider: IProvider (complex)</code> Individuals provider
* <li><code>mu: int</code> Number of parents to select
* <li><code>lambda: int</code> Number of son to obtain by recombination
* <li><code>recombinator: IRecombinator (complex)</code> Recombination operator
* </ul>
*/
@SuppressWarnings("unchecked")
public void configure(Configuration configuration) {
// Call super.configure() method
super.configure(configuration);
// Mu parameter
int mu = configuration.getInt("mu");
setMu(mu);
// Lambda parameter
int lambda = configuration.getInt("lambda");
setLambda(lambda);
// Recombinator
try {
// Recombinator classname
String recombinatorClassname = configuration.getString("recombinator[@type]");
// Recombinator class
Class<? extends IRecombinator> recombinatorClass =
(Class<? extends IRecombinator>) Class.forName(recombinatorClassname);
// Recombinator instance
IRecombinator recombinator = recombinatorClass.newInstance();
// Configure recombinator if necessary
if (recombinator instanceof IConfigure) {
// Extract recombinator configuration
Configuration recombinatorConfiguration = configuration.subset("recombinator");
// Configure species
((IConfigure) recombinator).configure(recombinatorConfiguration);
}
// Set species
setRecombinator(recombinator);
} catch (ClassNotFoundException e) {
throw new ConfigurationRuntimeException("Illegal recombinator classname");
} catch (InstantiationException e) {
throw new ConfigurationRuntimeException("Problems creating an instance of recombinator", e);
} catch (IllegalAccessException e) {
throw new ConfigurationRuntimeException("Problems creating an instance of recombinator", e);
}
}
