The reason for this is because we have the energy of an image and within the atom-centered model we have to guess atomic energies that when summed up they return the target -- in this case the total energy. This same loss function can be then adjusted to train against forces if wanted.
The reason for this is because we have the energy of an image and within the atom-centered model we have to guess atomic energies that when summed up they return the target -- in this case the total energy. This same loss function can be then adjusted to train against forces if wanted.