Table 2.

Model average color difference per fold test set.

The Series of Fold	P-Kernel			G-Kernel			RP-Kernel
	LAB	LUV	DE2000	LAB	LUV	DE2000	LAB	LUV	DE2000
1	0.907	0.975	0.666	0.855	0.933	0.613	0.746	0.848	0.527
2	1.583	1.558	0.801	1.294	1.401	0.676	1.273	1.344	0.597
3	1.535	1.351	0.640	1.755	1.444	0.844	2.130	1.718	0.918
4	1.429	1.207	0.635	1.772	1.784	1.150	1.376	1.221	0.665
5	0.681	0.798	0.541	0.834	0.835	0.631	0.581	0.714	0.442
6	2.550	1.666	1.206	1.823	1.372	1.053	1.007	0.753	0.603
7	1.542	1.452	1.188	1.517	1.429	1.144	1.749	1.557	1.311
8	1.655	1.471	0.898	1.146	1.164	0.711	1.258	1.391	0.799
9	1.154	1.010	0.665	1.099	1.056	0.696	1.194	1.232	0.733
10	2.411	1.847	1.116	2.684	1.954	1.113	2.522	1.865	1.003