Fig. 4: Maximum model uncertainty as a function of K for four crack systems.

a (100)[011], (b) (110)[001], (c) (100)[010] and (d)\((110)[1\bar{1}0]\). The dashed line indicates the 8 meV per atom. Original is the GAP trained on the original database³² (see Fig. 2 for the value of error). Iter-0 is the GAP trained with original and preliminary database.