. 2020 Mar 10;5(11):5951–5958. doi: 10.1021/acsomega.9b04302

Table 2. QSAR Models of the Peptides as ACE Inhibitors Obtained Using Different Sets of the AA Indices.

number of used AA indices	R_training²	R_test²	q_loo²	q_lmo²	RSME_training	RSME_test	R_MP²^a
2	0.829	0.801	0.797	0.788	0.266	0.376	0.150
3	0.830	0.826	0.806	0.803	0.265	0.341	0.217
4	0.843	0.852	0.814	0.814	0.255	0.265	0.121
5	0.849	0.842	0.822	0.819	0.250	0.317	0.176
6	0.845	0.844	0.818	0.816	0.253	0.314	0.104
7	0.855	0.859	0.831	0.830	0.245	0.302	0.160
8	0.855	0.861	0.831	0.829	0.245	0.295	0.099

Maximum R_training² for the Y-randomization test.