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package jcgp.backend.modules.mutator;
import jcgp.backend.parameters.BooleanParameter;
import jcgp.backend.parameters.IntegerParameter;
import jcgp.backend.population.Chromosome;
import jcgp.backend.population.Mutable;
import jcgp.backend.resources.Resources;
/**
* Point mutator
* <br><br>
* In point mutation, a number of random genes
* is picked and mutated until all required
* mutations have been performed. The actual number
* of genes to be mutated can be defined in any
* arbitrary way.
*
* @author Eduardo Pedroni
*
*/
public abstract class PointMutator extends Mutator {
protected IntegerParameter genesMutated;
protected BooleanParameter report;
/**
* For internal use only, initialises the resources field.
*
* @param resources the experiment's resources.
*/
protected PointMutator(Resources resources) {
super(resources);
}
@Override
public void mutate(Chromosome chromosome) {
if (report.get()) getResources().reportln("[Mutator] Number of mutations to be performed: " + genesMutated.get());
// for however many genes must be mutated
for (int i = 0; i < genesMutated.get(); i++) {
// choose a random mutable
Mutable mutable = chromosome.getRandomMutable();
if (report.get()) getResources().reportln("[Mutator] Mutation " + i + " selected " + mutable);
// mutate a random gene
mutable.mutate();
}
}
}
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