A Sequential Optimization Sampling Method for Metamodels with Radial Basis Functions

Table 5

Metamodel accuracy results for functions 1–6 between SOSM and previous sequential sampling methods.

Number	SOSM			CV [25]			KSSM [28]			SLE [29]			𝑓min
	RMSE	NRMSE	𝑓min	RMSE	NRMSE	𝑓min	RMSE	NRMSE	𝑓min	RMSE	NRMSE	𝑓min
1	0.663	28.214	−10.002	0.699	29.707	−9.995	0.709	30.142	−10.017	0.493	20.951	−9.539	−10
2	0.061	9.798	−1.715	0.089	14.312	−1.715	0.120	19.343	−1.716	0.065	10.504	−1.622	−1.715
3	1.674	6.464	−0.002	2.261	8.732	0.000	2.305	8.902	−0.001	1.459	5.636	0.105	0
4	0.728	38.118	−6.556	0.813	42.601	−6.514	0.847	44.359	−6.552	0.533	27.899	−5.904	−6.551
5	2.455	10.531	−34.243	2.508	10.759	−33.794	2.466	10.575	−34.259	2.789	11.961	−12.212	−34.63
6	0.995	10.011	0.116	0.943	9.486	0.390	0.950	9.558	0.052	0.703	7.080	1.274	0