Information Filtering via Biased Random Walk on Coupled Social Network

Table 1

Properties of the tested data sets.

Data sets	Users	Objects	Collecting links	Social links	Sparsity
Epinions	4,066	7,649	154,122	217,017	5×10^−3
Friendfeed	4,148	5,700	96,942	386,804	4.1×10^−3