Table 3.

Result of k-fold cross-validation for compressive strength.

AdaBoost					Decision Tree
K-Fold	MAE	MSE	RMSE	R2	K-Fold	MAE	MSE	RMSE	R2
1	7.49	87.20	9.34	0.95	1	13.45	216.60	14.72	0.76
2	11.08	124.99	11.18	0.91	2	23.10	271.26	16.47	0.89
3	7.04	114.49	10.70	0.83	3	14.85	204.20	14.29	0.97
4	8.45	90.82	9.53	0.79	4	9.59	131.79	11.48	0.92
5	6.52	85.74	9.26	0.90	5	11.17	217.26	14.74	0.98
6	16.74	435.13	20.86	9.98	6	12.51	197.40	14.05	0.82
7	9.88	193.48	13.91	0.93	7	9.07	210.54	14.51	0.77
8	8.72	123.43	11.11	0.85	8	10.15	194.60	13.95	0.88
9	7.02	40.44	6.36	0.87	9	9.00	108.16	10.42	0.90
10	9.00	87.42	9.35	0.90	10	7.44	90.44	9.51	0.87