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Table 6

Statistical parameters of the SVM models for the relative energy dissipation ratio

Condition	SVM models	Optimal parameters			Performance criteria
					Train			Test
		C	ɛ	γ	R	DC	RMSE	R	DC	RMSE
Expanding channel with central sill	DE(I)	10	0.11	5	0.909	0.902	0.031	0.904	0.899	0.038
	DE(II)	10	0.10	5	0.992	0.983	0.014	0.989	0.972	0.024
	DE(III)	10	0.11	4	0.912	0.925	0.028	0.906	0.918	0.034
	DE(VI)	8.0	0.10	4	0.938	0.932	0.019	0.927	0.931	0.031
	DE(VII)	10	0.1	4	0.993	0.985	0.012	0.992	0.984	0.021

Condition	SVM models	Optimal parameters			Performance criteria
					Train			Test
		C	ɛ	γ	R	DC	RMSE	R	DC	RMSE
Expanding channel with central sill	DE(I)	10	0.11	5	0.909	0.902	0.031	0.904	0.899	0.038
	DE(II)	10	0.10	5	0.992	0.983	0.014	0.989	0.972	0.024
	DE(III)	10	0.11	4	0.912	0.925	0.028	0.906	0.918	0.034
	DE(VI)	8.0	0.10	4	0.938	0.932	0.019	0.927	0.931	0.031
	DE(VII)	10	0.1	4	0.993	0.985	0.012	0.992	0.984	0.021