Machine Learning-Based Modeling with Optimization Algorithm for Predicting Mechanical Properties of Sustainable Concrete

Table 7

Statistical indicators of verified models for external predictability.

S.No.	Equation	Condition	CS	ST	FS	Suggested by
1.		R > 0.8	0.92	0.92	0.91	Frank and Todeschini [85]
2.		0.85 < k < 1.15	1.00	0.99	1.01	Golbraikh and Tropsha [86]
3.		0.85 < k″ < 1.15	0.98	0.98	1.05	Golbraikh and Tropsha [86]
4.		Rm > 0.5	0.67	0.71	0.64	Roy and Roy [87]
			0.98	0.98	0.97
			0.98	0.99	0.98