| Set | Ratings | Users | Items | Density | Start | End |
|---|---|---|---|---|---|---|
| ML100K | 100,000 | 943 | 1,682 | 6.305% | 1997-09-20 03:05:10 | 1998-04-22 23:10:38 |
| ML1M | 1,000,209 | 6,040 | 3,706 | 4.468% | 2000-04-25 23:05:32 | 2003-02-28 17:49:50 |
| ML10M | 10,000,054 | 69,878 | 10,677 | 1.340% | 1995-01-09 11:46:49 | 2009-01-05 05:02:16 |
| ML20M | 20,000,263 | 138,493 | 26,744 | 0.540% | 1995-01-09 11:46:44 | 2015-03-31 06:40:02 |
| ML25M | 25,000,095 | 162,541 | 59,047 | 0.260% | 1995-01-09 11:46:49 | 2019-11-21 09:15:03 |
| ML32M | 32,000,204 | 200,948 | 84,432 | 0.189% | 1995-01-09 11:46:44 | 2023-10-13 02:29:07 |
MovieLens
MovieLens is a movie recommendation site producing data sets that are widely used for recommender systems research. The data sets can be obtained from GroupLens.
