Research Article
A Differential Privacy Framework for Collaborative Filtering
Table 1
The noise of Laplace mechanism.
| | counts | random r | =0.1 | =0.5 | = | =1 | = |
| | 44 | 0.8633 | 12.9718 | 2.5944 | 1.8714 | 1.2972 | 1.1807 |
| | 12 | 0.344 | -3.7392 | -0.7478 | -0.5395 | -0.3739 | -0.3404 |
| | 38 | 0.4569 | -0.9018 | -0.1804 | -0.1301 | -0.0902 | -0.0821 |
| | 76 | 0.2381 | -7.4196 | -1.4839 | -1.0704 | -0.742 | -0.6754 |
| | 92 | 0.7712 | 7.816 | 1.5632 | 1.1276 | 0.7816 | 0.7114 |
| | SSE of the noise | 299.203 | 11.9681 | 6.2275 | 2.992 | 2.479 |
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