up through $N_{\rm max} = 18$. Actual NCSM results always converged from above towards the exact result and become increasingly independent of the basis space parameters, $\hbar\Omega$ and $N_{\rm max}$. That the ANN result is essentially a flat line at $N_{\rm max} = 70$ and that the curves preceding it form an increasingly dense pattern approaching $N_{\rm max} = 70$ both provide indications that the ANN is producing a valid estimate of the converged gs energy.

![Comparison of the NCSM calculated and the corresponding ANN predicted gs energy values of $^6\mathrm{Li}$ as a function of $\hbar\Omega$ at $N_{\rm max} = 12, 14, 16,$ and $18$. The lowest horizontal line corresponds to the ANN nearly converged result at $N_{\rm max} = 70$.[]{data-label="fig:Li6_gs_energy_cp"}](Li6_gs_energy_cp_best-eps-converted-to.pdf){width="\linewidth"}

The gs rms radii provide a very different quantity from NCSM results as they are found to be more slowly convergent than the gs energies and they are not monotonic. Figure \[fig:Li6\_gs\_radius\] presents the calculated gs point proton rms radius of $^6\mathrm{Li}$ as a function of $\hbar\Omega$ at selected values of $N_{\rm max}$. The dashed curves connect the NCSM calculation results using the Daejeon16 NN interaction up through $N_{\rm max}=10$, while the solid curves link the ANN prediction results 