What is the prediction accuracy of force by DeepH?

[chunweizhu]

Dear Dr. Li,

I hope this message finds you well. I was wondering if I may ask you a few questions regarding the DeepH model. Firstly, could you kindly clarify what loss function is used in the model, and what is the prediction error of the deep neural network constructed by DeepH for the force acting on each atom in the system? Also, if the error is deemed small, may the trained network be used for molecular dynamics simulation akin to the DeepMD-kit ? Moreover, I am curious about the methodology employed to obtain the ground state structure; did you utilize perturbation techniques and energy predictions for the structure, or is there another approach employed for this purpose?

Thank you in advance for your assistance.