Struct EvolutionStep 

pub struct EvolutionStep<G, F>
where
    G: EvolutionaryGenome,
    F: Fitness<Genome = G, Value = f64>,
{ /* private fields */ }

A single step in the evolutionary Markov chain

This represents the transition kernel for MCMC-style evolution.

Implementations

impl<G, F> EvolutionStep<G, F>

where G: EvolutionaryGenome, F: Fitness<Genome = G, Value = f64>,

pub fn new(model: EvolutionModel<G, F>, config: EvolutionChainConfig) -> Self

Create a new evolution step

pub fn propose<R: Rng>(&self, current: &G, rng: &mut R) -> G

Propose a new genome via mutation

pub fn acceptance_probability(&self, current: &G, proposed: &G) -> f64

Compute acceptance probability (Metropolis-Hastings)

α(x, x’) = min(1, exp(f(x’) - f(x)) / T)

pub fn step<R: Rng>(&self, current: &G, rng: &mut R) -> G

Perform one MCMC step

pub fn run_chain<R: Rng>( &self, initial: &G, num_steps: usize, rng: &mut R, ) -> Vec<G>

Run the chain for multiple steps