(a) Generational distance
(b) Hypervolume
(c) Rate of feasible solutions
(d) Hypervolume for generations 3 (0.7668) and 16 (1.4978)
Figure 9: While the GD is dropping with the generations, the HR is rising and the RF is fluctuating. This means that as the generations progress, the Pareto fronts are coming closer to each other and their extent is becoming bigger while procuring enough solutions that are failing.