Table 6:
Comparison of the proposed method and LDP-based data sharing mechanism in terms of privacy when the kinship relationships are also considered. Using the shared SNPs of the donor and Mendel’s law, we compute the attacker’s estimation error for all sensitive SNPs of the donor’s parents. t is the order of the Markov chain. Only non-sensitive SNPs are shared in LDP1. Kinship attack is performed for LDP1.
| ϵ | ||||
|---|---|---|---|---|
|
| ||||
| 0.1 | 0.2 | 0.5 | 1 | |
| Proposed method, t = 1 | 0.5620 | 0.5629 | 0.5605 | 0.5534 |
| Proposed method, t = 4 | 0.6554 | 0.6430 | 0.6296 | 0.6228 |
| LDP1 | 0.5805 | 0.5662 | 0.5543 | 0.5468 |
| LDP1 after attack | 0.5040 | 0.5016 | 0.4944 | 0.4934 |