Fig. 2: Symmetry functions.

Shown are radial functions \({G}_{i}^{2}(\mu ,\eta )\) (Eq. (7)) for increasing values of μ. The local environment of a central atom is described by summing contributions from neighboring atoms separately by element.

Shown are radial functions \({G}_{i}^{2}(\mu ,\eta )\) (Eq. (7)) for increasing values of μ. The local environment of a central atom is described by summing contributions from neighboring atoms separately by element.