evox.operators.mutation.pm_mutation

Module Contents

Functions

polynomial_mutation

Polynomial mutation. Inspired by PlatEMO.

API

evox.operators.mutation.pm_mutation.polynomial_mutation(x: torch.Tensor, lb: torch.Tensor, ub: torch.Tensor, pro_m: float = 1, dis_m: float = 20) → torch.Tensor[source]

Polynomial mutation. Inspired by PlatEMO.

Parameters:

  • x – The input population (size: n x d).

  • lb – The lower bounds for the decision variables.

  • ub – The upper bounds for the decision variables.

  • pro_m – Probability of mutation.

  • dis_m – The distribution index for polynomial mutation.

Returns:

The mutated population. (size: n x d)