Prediction performance expressed in terms of the RMSE over all the points of the binding curves, for the six classes of interactions and ρ ⊗ ρ, ρ ⊗ V and V ⊗ V models. For each class we also indicate the number of training samples, and the characteristic energy scale, expressed in terms of the standard deviation of the energies in the test set.

Class	RMSE/eV
	n train	STD/eV	ρ ⊗ ρ	ρ ⊗ V	V ⊗ V
CC	100	1.86	0.72	0.049	0.058
CP	200	0.379	0.25	0.074	0.092
CA	150	0.083	0.056	0.041	0.034
PP	100	0.131	0.10	0.062	0.125
PA	350	0.046	0.032	0.013	0.021
AA	950	0.063	0.026	0.004	0.006