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Ablation study of DP hyperparameters (gradient clipping and noise multiplier).
| Gradient clipping | Noise multiplier | Privacy budget (ε) | Test accuracy | External accuracy |
|---|---|---|---|---|
| 1.0 | 4 | 2.90 | 0.815 | 0.740 |
| 1.5 | 4 | 3.26 | 0.759 | 0.719 |
| 2.0 | 4 | 3.89 | 0.765 | 0.732 |
| 1.0 | 6.0 | 2.34 | 0.832 | 0.737 |
| 1.0 | 2.0 | 10.01 | 0.782 | 0.748 |
