Module es_classical 

Classical Evolution Strategies.

Four canonical variants parameterized on a single EsConfig:

• (1+1) — a single parent, a single offspring, 1/5th success-rule σ adaptation.
• (1+λ) — a single parent, λ offspring per generation; the best offspring replaces the parent iff its fitness improves. The underlying mutation/selection loop is also reused by Cartesian GP.
• (μ,λ) — μ parents, λ offspring; parents are discarded each generation.
• (μ+λ) — μ parents, λ offspring; survivors are the μ best of the combined pool.

σ adaptation is by log-normal self-adaptation in the multi-parent variants; (1+1) uses Rechenberg’s 1/5th success rule.

References

• Beyer & Schwefel (2002), Evolution strategies: A comprehensive introduction.

Structs

EsConfig

Static configuration for an EvolutionStrategy run.

EsState

Generation state for EvolutionStrategy.

EvolutionStrategy

Classical Evolution Strategy.

Enums

EsKind

Which selection scheme the ES uses.