mpsprep.helpers.best_s_val_truncation_idx

mpsprep.helpers.best_s_val_truncation_idx(s_vals)

Given a list of singular values, this function returns the index of the singular value that is the best valid candidate for truncation. This is determined by the ratio of the largest singular value to the smallest singular value.

Parameters

s_valslist of np.ndarray

List of arrays of singular values.

Returns

best_valid_s_val_truncation_idxarray-like of int of shape (2,)

Index of the singular value that is the best valid candidate for truncation.