I am reading through the NEAT paper here. On page 14 of the PDF, there is this quote about mutation:
There was an 80% chance of a genome having its connection weights mutated, in which case each weight had a 90% chance of being uniformly perturbed and a 10% chance of being assigned a new random value.
What exactly does it mean to perturb weights? What is uniform vs. nonuniform perturbation?
Is there an established method to do this? I am imagining the process as multiplying each connection weight by a random number, but I'm unfamiliar with the term.