Table 1. Overview of studied networks.

Dataset	Slashdot	Congress	Bitcoin-Alpha	Bitcoin-OTC	Epinions	SB ref	EC ref
Nodes	82,052	219	3766	5857	119,070	120,000	120,000
Edges	498,527	520	13,872	21,131	701,569	547,868	790,591
Density	0.00015	0.02178	0.00196	0.00123	0.00010	0.00008	0.00011
Positive ratio	0.76411	0.79615	0.91703	0.86271	0.83215	0.82187	0.72319