ribs.emitters.operators.GaussianOperator¶

class ribs.emitters.operators.GaussianOperator(sigma: Float | ArrayLike, seed: Int | None = None)[source]¶

Adds Gaussian noise to solutions.

Parameters:¶

sigma: Float | ArrayLike¶: Standard deviation of the Gaussian distribution. Note we assume the Gaussian is diagonal, so if this argument is an array, it must be 1D.
seed: Int | None = None¶: 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`	Parent Type to be used by selector.

ask(parents: numpy.typing.ArrayLike) → ndarray[source]¶

Adds Gaussian noise to parents.

Parameters:¶

parents: numpy.typing.ArrayLike¶: (batch_size, solution_dim) array of solutions to be mutated.

Returns:¶

(batch_size, solution_dim) array that contains batch_size mutated solutions.