Fig. 3
From: The optimality of the standard genetic code assessed by an eight-objective evolutionary algorithm
The scheme of the Strength Pareto Evolutionary Algorithm (SPEA2). Nmax is the maximum size of the archive set, t - the current number of generations, T - the maximum number of generations, P - the population of individuals, A - the archive set, A* - the final non-dominated set and K - the mating pool