A Differential Privacy Framework for Collaborative Filtering

Table 2

The size of datasets.

Datasets	User × item (original)	User × item (experimental)
ml-latest-small	700 × 9000	671 × 4801
ml-20m(1000)	138,000 × 27,000	1000 × 5870
ml-latest(2000)	270,000 × 45,000	1907 × 6144
ml-latest(5000)	270,000 × 45,000	4773 × 8972