Differentially Private Recommendation System Based on Community Detection in Social Network Applications

Table 2

General statistics about the two datasets.

Network Property	Facebook	Google+
Number of nodes	4039	107614
Number of friendship links	88234	13673453
Number of attribute categories	22	6
Number of recommend attribute categories	13	4
Number of inherent attribute categories	9	2
Diameter (longest shortest path)	8	6
Average clustering coefficient	0.6055	0.4901