Mirrored sampling.

[pushnyakov]

evostra/evostra/algorithms/evolution_strategy.py

Line 30 in 3819a3c

weights_try.append(w[index] + jittered)

It is a useful idea to evaluate not only +gaussian noise, but also -gaussian noise.
See https://hal.inria.fr/inria-00530202v2/document for details.