Given a coulomb matrix, it adds random noise to the sorting defined by sigma. For sorting, L2-norm is used. Args:

Args: system_stats(iterable containing ASE.Atoms or System): The atomic systems for which to gather statistics. Returns:

Will we be using a clang compiler?

Used to validate and determine the final method for calculating the derivatives.

Used to validate and determine the final method for calculating the derivatives.

* Exponential weighting of the form: * w(r) = c / (d + e^(-r/r0)) */

* Polynomial weighting of the form: * w(r) = c * (1 + 2(r/r0)^3 - 3(r/r0)^2)^m, if r <= r0, 0 otherwise */

* Power function weighting of the form: * w(r) = c / (d + (r/r0)^m) */

Zero-pads the given matrix. Args: array (np.ndarray): The array to pad Returns: np.ndarray: The zero-padded