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

Table 8. Performance of Boosting-based models during 10-fold cross validation and testing stages at Changsha 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	0.4275	0.3527	0.8976	0.4433	0.3658	0.8894
GBDT1	0.2865	0.2037	0.9536	0.2715	0.1989	0.9585
XGB1	0.2790	0.2011	0.9559	0.2641	0.1952	0.9607
LGB1	0.2790	0.1994	0.9559	0.2654	0.1935	0.9604
CAT1	0.2746	0.1959	0.9573	0.2569	0.1881	0.9628
T_max, T_min, RH
ADA2	0.6134	0.4873	0.7908	0.5861	0.4568	0.8066
GBDT2	0.5744	0.4212	0.8161	0.5355	0.3968	0.8386
XGB2	0.5528	0.4121	0.8298	0.5141	0.3879	0.8512
LGB2	0.5531	0.4098	0.8296	0.5086	0.3805	0.8544
CAT2	0.5462	0.4040	0.8338	0.5021	0.3731	0.8581
T_max, T_min, U₂
ADA3	0.7151	0.5802	0.7143	0.7130	0.5798	0.7138
GBDT3	0.6466	0.4789	0.7667	0.6281	0.4700	0.7779
XGB3	0.6258	0.4693	0.7816	0.6041	0.4586	0.7945
LGB3	0.6257	0.4684	0.7818	0.6018	0.4553	0.7961
CAT3	0.6176	0.4623	0.7873	0.5978	0.4480	0.7988
T_max, T_min
ADA4	0.7174	0.5808	0.7129	0.6982	0.5617	0.7257
GBDT4	0.6622	0.4968	0.7558	0.6394	0.4870	0.7700
XGB4	0.6484	0.5009	0.7659	0.6319	0.4954	0.7754
LGB4	0.6421	0.4913	0.7713	0.6197	0.4753	0.7840
CAT4	0.6335	0.4813	0.7767	0.6117	0.4672	0.7895
T_max, T_min, Ra
ADA5	0.7158	0.5807	0.7138	0.7172	0.5841	0.7104
GBDT5	0.6276	0.4606	0.7802	0.6169	0.4533	0.7858
XGB5	0.6053	0.4487	0.7956	0.5938	0.4444	0.8015
LGB5	0.6035	0.4477	0.7969	0.5912	0.4407	0.8032
CAT5	0.5943	0.4394	0.8030	0.5834	0.4321	0.8084
T_max, T_min, J
ADA6	0.7163	0.5798	0.7133	0.7133	0.5782	0.7136
GBDT6	0.6188	0.4540	0.7863	0.6081	0.4530	0.7918
XGB6	0.5978	0.4430	0.8007	0.5896	0.4437	0.8043
LGB6	0.5962	0.4415	0.8018	0.5870	0.4392	0.8061
CAT6	0.5870	0.4324	0.8079	0.5754	0.4271	0.8136