. 2020 Jun 29;15(6):e0235324. doi: 10.1371/journal.pone.0235324

Table 6. Performance of Boosting-based models during 10-fold cross validation and testing stages at Ji’nan station.

Models	10 Fold cross validation results			Testing results
	RMSE	MAE	Adj_R²	RMSE	MAE	Adj_R²
	mm/d	mm/d	Adj_R²	mm/d	mm/d	Adj_R²
T_max, T_min, Rs
ADA1	0.7516	0.6139	0.8547	0.6986	0.5436	0.8637
GBDT1	0.6115	0.4357	0.9047	0.5679	0.4050	0.9100
XGB1	0.5977	0.4309	0.9089	0.5423	0.3940	0.9179
LGB1	0.5924	0.4249	0.9106	0.5359	0.3870	0.9198
CAT1	0.5861	0.4198	0.9124	0.5259	0.3789	0.9228
T_max, T_min, RH
ADA2	0.8077	0.6538	0.8315	0.7889	0.6382	0.8262
GBDT2	0.6413	0.4586	0.8952	0.6132	0.4384	0.8950
XGB2	0.6143	0.4513	0.9034	0.5860	0.4360	0.9041
LGB2	0.6124	0.4444	0.9042	0.5769	0.4209	0.9071
CAT2	0.6044	0.4388	0.9066	0.5766	0.4204	0.9072
T_max, T_min, U₂
ADA3	0.8731	0.6815	0.8043	0.8215	0.6502	0.8115
GBDT3	0.7067	0.5301	0.8717	0.6672	0.5015	0.8757
XGB3	0.6931	0.5226	0.8767	0.6472	0.4891	0.8830
LGB3	0.6907	0.5206	0.8776	0.6454	0.4877	0.8837
CAT3	0.6811	0.5126	0.8810	0.6334	0.4755	0.8880
T_max, T_min
ADA4	0.9552	0.7496	0.7658	0.9106	0.7133	0.7686
GBDT4	0.8563	0.6407	0.8135	0.8108	0.6155	0.8166
XGB4	0.8500	0.6508	0.8159	0.7829	0.6107	0.8289
LGB4	0.8330	0.6297	0.8240	0.7651	0.5826	0.8366
CAT4	0.8204	0.6183	0.8287	0.7471	0.5705	0.8442
T_max, T_min, Ra
ADA5	0.8630	0.6652	0.8089	0.8226	0.6402	0.8111
GBDT5	0.7330	0.5349	0.8626	0.6907	0.5090	0.8668
XGB5	0.7139	0.5236	0.8698	0.6723	0.4996	0.8738
LGB5	0.7099	0.5200	0.8713	0.6629	0.4916	0.8773
CAT5	0.7042	0.5146	0.8734	0.6520	0.4847	0.8813
T_max, T_min, J
ADA6	0.8357	0.6445	0.8215	0.7851	0.6114	0.8279
GBDT6	0.7259	0.5306	0.8654	0.6957	0.5156	0.8649
XGB6	0.7044	0.5182	0.8732	0.6643	0.4957	0.8768
LGB6	0.6978	0.5126	0.8757	0.6569	0.4898	0.8795
CAT6	0.6877	0.5060	0.8791	0.6479	0.4801	0.8828