
(µ, λ) version is generally observed to yield better performance (Baeck
and Schwefel, 1993).
The following list summarizes the procedure used in most evolution
strategies:
1. Initialize population.
2. Perform recombination using the µ parents to form λ children.
3. Perform mutation on all children.
4. Evaluate λ or µ+λpopulation members.
5. Select µ individuals for the new population.
6. If the termination criterion is not met, go to step 2; otherwise,
terminate.
In sum, in evolution strategies mutation is applied to the parent’s
features to generate children that resemble the parent but differ sto-
chastically from it. Each of the survivor’s positional ...