ribs.emitters.operators.GaussianOperator¶

class ribs.emitters.operators.GaussianOperator(sigma, lower_bounds, upper_bounds, seed=None)[source]¶

Adds Gaussian noise to solutions.

Parameters

sigma (float or array-like) – Standard deviation of the Gaussian distribution. Note we assume the Gaussian is diagonal, so if this argument is an array, it must be 1D.
lower_bounds (array-like) – Upper bounds of the solution space. Passed in by emitter
upper_bounds (array-like) – Upper bounds of the solution space. Passed in by emitter
seed (int) – Value to seed the random number generator. Set to None to avoid a fixed seed.

Methods

ask(parents)

Adds Gaussian noise to parents.

Attributes

Parent Type to be used by selector.

ask(parents)[source]¶

Adds Gaussian noise to parents.

Parameters: parents (array-like) – (batch_size, solution_dim) array of solutions to be mutated.
Returns: (batch_size, solution_dim) array that contains batch_size mutated solutions.
Return type: numpy.ndarray

property parent_type¶

Parent Type to be used by selector.