Table 3. The statistics of the datasets.

Dataset	Users	Items	Interactions	Density
Movielens100k	943	1,682	10,000	0.63%
Movielens1M	6,040	3,706	1,000,209	4.5%
Movielens25M	10,000	24,331	1,496,612	0.62%
Douban25M	10,000	1,111	17,556	0.16%