Struct EsState 

pub struct EsState<B: Backend> {
    pub parents: Tensor<B, 2>,
    pub sigmas: Tensor<B, 1>,
    pub parent_fitness: Vec<f32>,
    pub best_genome: Option<Tensor<B, 2>>,
    pub best_fitness: f32,
    pub generation: usize,
    pub successes_in_window: u32,
    pub window_len: u32,
}

Generation state for EvolutionStrategy.

Fields

parents: Tensor<B, 2>

Parent population. (μ, D) for μ-parent variants; (1, D) for (1+1) and (1+λ).

sigmas: Tensor<B, 1>

Per-parent σ values.

Shape between generations is (μ,) for log-normal adaptation and (1,) for (1+1)/(1+λ) with shared σ. Between an ask and the matching tell the tensor is temporarily (μ + λ,): parent σ followed by per-offspring σ. See ask for the rationale.

parent_fitness: Vec<f32>

Parent fitnesses.

best_genome: Option<Tensor<B, 2>>

Best-so-far genome, shape (1, D).

best_fitness: f32

Best-so-far fitness.

generation: usize

Completed-generation counter.

successes_in_window: u32

(1+1) only: running success-rate counter for the 1/5th rule.

window_len: u32

(1+1) only: window length observed so far.

Trait Implementations

impl<B: Clone + Backend> Clone for EsState<B>

fn clone(&self) -> EsState<B>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<B: Debug + Backend> Debug for EsState<B>

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

Formats the value using the given formatter.