saealib.MutationGaussian

class saealib.MutationGaussian(mutation_rate, sigma)

Bases: Mutation

Gaussian mutation operator.

Parameters:

• mutation_rate (float)

• sigma (float)

mutation_rate

The probability of mutating each dimension.

Type:

float

sigma

Standard deviation of the Gaussian perturbation.

Type:

float

Methods

__init__	Initialize Gaussian mutation operator.
mutate	Execute Gaussian mutation.

Method Details

MutationGaussian.__init__(mutation_rate, sigma)

Initialize Gaussian mutation operator.

Parameters:

• mutation_rate (float) – The probability of mutating each dimension.

• sigma (float) – Standard deviation of the Gaussian perturbation.

MutationGaussian.mutate(p, mutate_range, rng=Generator(PCG64) at 0x7F65E9C92260)

Execute Gaussian mutation.

Parameters:

• p (np.ndarray) – Parent individual. shape = (dim,)

• mutate_range (tuple) – Tuple of (lower_bound, upper_bound) for mutation.

• rng (np.random.Generator, optional) – Random number generator, by default np.random.default_rng()

Returns:

Mutated individual.

Return type:

np.ndarray