Research Article
New Collaborative Filtering Algorithms Based on SVD++ and Differential Privacy
Table 1
Statistical properties of the two datasets.
| | Property | MovieLens-1M | Netflix-1M |
| | Users | 6040 | 4996 | | Movies | 3952 | 3999 | | Density | 4.19% | 0.19% | | Average rating | 3.5816 | 3.5956 | | Variance rating | 1.2479 | 1.2208 |
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