Table 2 Parameters for the GAP-SOAP (many-body) term.

From: Machine-learned interatomic potentials for alloys and alloy phase diagrams

Parameter

Value

comment

rcut

4.5 Å

Cutoff distance

Cutoff_transition_width

0.5 Å

Cutoff smoothing length scale

δ

0.2 eV

Typical contribution to energy

nsparse

500

Number of basis functions

\({n}_{\max }\)

8

Radial basis truncation

\({l}_{\max }\)

8

Angular basis truncation

ζ

2

Power SOAP kernel is raised to

σatom

0.5 Å

Smoothing of atoms in neighbor density