Atrial Fibrillation Detection with Low Signal-to-Noise Ratio Data Using Artificial Features and Abstract Features

Table 4

Counting rules for some variables.

		Predicted classification
Reference classification		N	A	O	∼	Total
	N	Nn				∑N
	A		Aa			∑A
	O			Oo		∑O
	∼				Pp	∑P
	Total	∑n	∑a	∑o	∑p