Table 4. Results for the case study based on Craig Venter’s data and the Ysearch dataset.
Scenarios include (1) no protection, (2) demographics only, (3) random opt-in, (4) random masking, (5) opt-in game, (6) masking game, (7) no-attack masking game, and (8) one-stage masking game. Only genomic attributes could be masked in this case study.
|
Searched suboptimal strategy |
Number of shared Y-STRs |
Inferred surname |
Confidence score |
Utility | Privacy | Benefit | Loss | Payoff |
Scenarios recommend |
| 0 | 50 | Venter | 0.6688 | 1 | 0.5 | $100 | $75 | $25 | 1 |
| 1 | 49 | Venter | 0.6688 | 0.9967 | 0.5 | $99.67 | $75 | $24.67 | / |
| 2 | 48 | Venter | 0.6688 | 0.9933 | 0.5 | $99.33 | $75 | $24.33 | / |
| 3 | 47 | Venter | 0.6688 | 0.9897 | 0.5 | $98.97 | $75 | $23.97 | / |
| 4 | 46 | Venter | 0.6688 | 0.9862 | 0.5 | $98.62 | $75 | $23.62 | / |
| 5 | 45 | Venter | 0.6688 | 0.9825 | 0.5 | $98.25 | $75 | $23.25 | / |
| 6 | 44 | Venter | 0.6688 | 0.9786 | 0.5 | $97.86 | $75 | $22.86 | / |
| 7 | 43 | Venter | 0.6435 | 0.9746 | 0.5 | $97.46 | $75 | $22.46 | / |
| 8 | 42 | Venter | 0.5484 | 0.9706 | 0.5 | $97.06 | $75 | $22.06 | / |
| 9 | 41 | Venter | 0.5481 | 0.9661 | 0.5 | $96.61 | $75 | $21.61 | / |
| 10* | 40 | Karlsson | 0.4662 | 0.9593 | 1 | $95.93 | $0 | $95.93 | 6, 7 |
| 11 | 39 | Karlsson | 0.4661 | 0.9544 | 1 | $95.44 | $0 | $95.44 | / |
| / | 0 | / | / | 0.44 | 0.00 | $44 | $0.00 | $44.00 | 2 |
| / | 0 | / | / | 0 | 1 | $0 | $0 | $0 | 3, 5 |
| / | 7 | Hinze | 0.4046 | 0.5043 | 1 | $50.43 | $0 | $50.43 | 4 |
| / | 50 | / | / | 1 | 0.00 | $100.00 | $0.00 | $100.00 | 8 |
*The best strategy in the masking game, found using the greedy algorithm with pruning.