Table 1.

The Hyperparameter optimization results of KPLS model in cross-validation.

The Series of Fold	P-Kernel			G-Kernel			RP-Kernel
	Order	Components	DE2000	$\mathit{\sigma }$	Components	DE2000	Order	Components	DE2000
1	3	17	0.862	176	21	0.863	3	8	0.752
2	3	18	0.895	285	22	0.858	3	8	0.756
3	3	17	0.897	196	21	0.880	3	8	0.742
4	3	18	0.947	400	20	0.940	5	11	0.759
5	3	17	0.941	267	22	0.896	5	12	0.764
6	3	17	0.794	236	23	0.882	5	8	0.769
7	4	18	0.825	230	22	0.773	3	8	0.670
8	3	18	0.838	226	22	0.749	3	9	0.699
9	3	18	0.898	225	22	0.861	5	11	0.720
10	4	17	0.840	245	23	0.738	5	8	0.707