Table 5. Prediction Performance Comparison for Lattice Parameter a of Cubic Materials with Data Augmentation.

descriptors	train sample no	test sample no	a
(cubic)	14,660	3665	0.973 ± 0.007
(cubic) + tetragonal	29,314	3665	0.966 ± 0.008
(cubic) + orthorhombic	41,461	3665	0.920 ± 0.011
(cubic) + tetragonal + orthorhombic	56,115	3665	0.920 ± 0.019
(cubic) + hexagonal + trigonal	34,989	3665	0.955 ± 0.012
(cubic) + tetragonal + orthorhombic + hexagonal + trigona	76,444	3665	0.934 ± 0.010
orthorhombic	21,440	5361	0.779 ± 0.012
orthorhombic + cubic	39,765	5361	0.753 ± 0.017
orthorhombic + cubic + tetragonal	54,419	5361	0.708 ± 0.014
orthorhombic + cubic + tetragonal + trigona	65,505	5361	0.699 ± 0.012