Table 1.

The details of the drug-target dataset.

Dataset	Drugs	Targets	Positive pairs	Negative pairs	Total pairs
Enzymes	419	643	2719	5438	8157
Ion channels	203	198	1372	2744	4116
GPCRs	217	92	620	1240	1860
Nuclear receptors	53	25	86	172	258
In total	892	958	4797	9594	14391§

^§The total number of drug-target pairs in the four datasets.