Supplemental Material

Additional details are provided in the Supplementary Information, including: a description of the tight-binding (TB) potential used for Ag clusters and its optimized parameters (in \AA\ and eV); the hyperparameters of the neural network classifier; the melting criteria for Si\textsubscript{20} obtained with different numbers of Monte Carlo steps; and the XYZ coordinates of the rare-gas, covalent, and metallic clusters studied.