From Community Detection to Mentor Selection in Rating-Free Collaborative Filtering

Table 2

Settingup of the communities of the Jester dataset.

Way of selecting mentors	Avg number of mentors	Lower quartile	median	Upper quartile
Whole set of connected neigh.	15644	17178	17646	18062
Algorithm LCD	18376	17645	19564	20098
Algorithm UC-LCD	5037	7	7122	7663
Algorithm F-LCD; (with 𝜃 = 1.0)	172	5	18	155