TABLE 2.

Performance comparison of five negative sample models.

Method	PRE	REC	SPE	ACC	MCC	F1	AUC
Random	0.870	0.946	0.856	0.901	0.808	0.905	0.960
Subcellular	0.908	0.957	0.903	0.930	0.860	0.932	0.971
Distance_3	0.846	0.820	0.851	0.835	0.672	0.833	0.910
Distance_5	0.863	0.915	0.854	0.884	0.771	0.888	0.950
Distance_7	0.905	0.933	0.903	0.918	0.837	0.919	0.973

Every bold value means it corresponds to the highest value in the evaluation indicator.