Algorithm 4: Simulated annealing (SA)

X → Initial CRNN structure obtained from the SSA T → Initial temperature α → Cooling scheduler Tf → final temperature X* = X > memorize the best solution          while (T > Tf) do          X’ = NS(X)                if f(X’) ≤ f(X) then                X = X’                      if X’ < X* then                          X* = X’          else          if $e^{\left(-\Delta E/T\right) }>R$   then          X = X’          T=T*α Output: X*