private void lethalMutate() {
double mutationRate =
ModelParameters.getDouble("BASE_LETHAL_MUTATION_RATE") * getMutatorStrength();
if (Rand.getDouble() < mutationRate) {
die();
}
}
private void antimutatorMutate(int currentGeneration) {
int startingEvolvingGeneration = ModelParameters.getInt("START_EVOLVING_GENERATION");
double mutationRate = ModelParameters.getDouble("INITIAL_ANTIMUTATOR_MUTATION_RATE");
if (currentGeneration >= startingEvolvingGeneration) {
mutationRate =
ModelParameters.getDouble("EVOLVING_ANTIMUTATOR_MUTATION_RATE") * getMutatorStrength();
}
// Poisson poisson = new Poisson(mutationRate, Rand.getEngine());
// int poissonObs = poisson.nextInt();
int poissonObs = Util.getPoisson(mutationRate);
for (int nMutation = 0; nMutation < poissonObs; nMutation++) {
MutatorLocus locus = getRandomMutatorLocus();
locus.decreaseStrength();
}
}
private void beneficialMutate(int currentGeneration, ArrayList mutationProperties) {
double mutationRate =
ModelParameters.getDouble("BASE_BENEFICIAL_MUTATION_RATE") * getMutatorStrength();
// Poisson poisson = new Poisson(mutationRate, Rand.getEngine());
// int poissonObs = poisson.nextInt();
int poissonObs = Util.getPoisson(mutationRate);
for (int nMutation = 0; nMutation < poissonObs; nMutation++) {
double u = Rand.getFloat();
double fitnessEffect =
1 + ((-ModelParameters.getFloat("DEFAULT_BENEFICIAL_EFFECT")) * Math.log(1 - u));
updateMutationInformation(currentGeneration, mutationProperties, fitnessEffect);
}
}
