Table 5. Root-mean-square errors, mean absolute errors and maximum absolute errors for the residual fields presented in Fig. 5 ▸ .

The result of the Gaussian process regression is compared with the weighted least-squares fit (WLSQ). Values are unitless (strain) and on the same scale (10⁻⁴) as in Fig. 5 ▸.

	RMSE		MAE		Maximum absolute error
Strain	GP	WLSQ	GP	WLSQ	GP	WLSQ
εxx	1.322	2.076	1.101	1.737	2.791	7.42
εyy	1.042	1.371	0.846	0.999	3.856	6.094
εzz	0.887	1.489	0.769	1.157	1.914	6.736
εxy	1.122	1.511	0.955	1.172	2.778	6.306
εxz	0.24	1.04	0.198	0.798	1.506	4.85
εyz	0.48	0.958	0.399	0.742	1.34	4.652