Table 6.

Comparison of four methods on identification viral sequences with a length of 500 bp. (Num. represents the number of correctly identified viral sequences from all 1000 viral sequences.)

Methods	PPR-Meta	CHEER	DeepVirFinder	VirGrapher
Num.	816	889	845	807
Accuracy	0.8025	0.8905	0.8480	0.7975
Recall	0.8160	0.8890	0.8450	0.8070
Precision	0.7945	0.8917	0.8501	0.7920
Specificity	0.7890	0.8920	0.8510	0.7880
F1 score	0.8051	0.8903	0.8475	0.7994