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

Table 1

Settingup of the communities of the MovieLens dataset.

Way of selecting mentors	Avg number of mentors	Lower quartile	Median	Upper quartile
Whole set of connected neigh.	165	7	89	313
Algorithm LCD	240	12	387	434
Algorithm UC-LCD	99	1	30	190
Algorithm F-LCD; (with 𝜃 = 0.5)	48	1	2	80