Prediction of Splitting Tensile Strength from Cylinder Compressive Strength of Concrete by Support Vector Machine

Table 7

Error measurement for 𝑓_spt from 100 × 200 mm cylinder 𝑓_𝑐.

	GEP-III [9]	ACI 363R	ACI 318	CEB-FIP	Regression [9]	RBF	Polynomial
RMSE of training set	0.5886	0.539	0.5244	0.4987	0.4911	0.7287	0.562
RMSE of testing set	0.483	0.3348	0.3393	0.2803	0.3155	0.3082	0.2917
MAPE of training set	11.8729	11.6879	10.9223	9.2976	9.472	15.5902	10.6658
MAPE of testing set	10.8701	7.1383	7.604	6.2261	7.234	6.9713	6.2835
𝑅^2 of training set	0.8198	0.8354	0.8353	0.83	0.8337	0.837	0.8253
𝑅^2 of testing set	0.8778	0.8802	0.8793	0.88	0.8801	0.8815	0.8823