code: def factorized_gaussian_noise(in_features, out_features, device):
      
      in_noise = scaled_noise(in_features, device=device)
      out_noise = scaled_noise(out_features, device=device)
  
      return out_noise.ger(in_noise), out_noise
docs: Factorised (cheaper) gaussian noise from "Noisy Networks for Exploration"
      by Meire Fortunato, Mohammad Gheshlaghi Azar, Bilal Piot and others