Table 6.

Optimal decision thresholds for fivefold cross-validation on the validation set and test set

Modes	Dataset	Optimal decision thresholds for five-fold cross-validation					Summarization
		1	2	3	4	5
G+F+E	Validation	0.6250	0.5714	0.5263	0.4173	0.5222	0.1224
	Test	0.5849	0.5852	0.5358	0.4677	0.5135
E	Validation	0.5040	0.4492	0.4724	0.4989	0.4650	0.4170
	Test	0.4850	0.4025	0.5391	0.3410	0.5969

Optimal thresholds are obtained by exhaustion. Summarization is the sum of the absolute values of the differences between the best threshold of the validation set and the best threshold of the test set. G: Gray scale; F: Blood flow Doppler; E: Elastography