Struct genetic_algorithm::mutate::MutateMultiGeneDynamic

pub struct MutateMultiGeneDynamic {
    pub number_of_mutations: usize,
    pub mutation_probability: f32,
    pub mutation_probability_step: f32,
    pub target_cardinality: usize,
}

Selects Chromosomes in the Population with the dynamically updated mutation_probability. Then mutates the selected chromosomes the provided number of times, where the Genotype determines whether this is random, relative or scaled. The mutation probability is dynamically increased or decreased to achieve a target population cardinality.

Duplicate mutations of the same gene are allowed, as disallowing duplicates is relatively expensive and mutations should be quite small, so there is little chance for conflict.

Useful when a single mutation would generally not lead to improvement, because the problem space behaves more like a UniqueGenotype where genes must be swapped (but the UniqueGenotype doesn’t map to the problem space well). Set number_of_mutations to two in that situation.

Fields

number_of_mutations: usize

mutation_probability: f32

mutation_probability_step: f32

target_cardinality: usize

Implementations

impl MultiGeneDynamic

pub fn new( number_of_mutations: usize, mutation_probability_step: f32, target_cardinality: usize, ) -> Self

Trait Implementations

impl Clone for MultiGeneDynamic

fn clone(&self) -> MultiGeneDynamic

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MultiGeneDynamic

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MultiGeneDynamic

fn default() -> MultiGeneDynamic

Returns the “default value” for a type.

impl From<MultiGeneDynamic> for Wrapper

fn from(mutate: MutateMultiGeneDynamic) -> Self

Converts to this type from the input type.

impl Mutate for MultiGeneDynamic

fn call<G: EvolveGenotype, R: Rng, SR: StrategyReporter<Genotype = G>>( &mut self, genotype: &mut G, state: &mut EvolveState<G>, config: &EvolveConfig, reporter: &mut SR, rng: &mut R, )