Table 3. The effect of the multi-step perturbations on the unambiguity ratio of DO to D for different types of data integration.
| k = 2 | k = 3 | k = 4 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| np | DO/D | +PPI | +cis(+PPI) | DO/D | +PPI | +cis(+PPI) | DO/D | +PPI | +cis(+PPI) |
| 1 | 4 | 2 | 1.8 | 8 | 3.3 | 2.4 | 16 | 5.1 | 3.2 |
| 2 | 4 | 2.5 | 2 | 8 | 3.2 | 4.3 | 16 | 5.1 | 6.5 |
| 3 | - | - | - | 8 | 3.1 | 5.7 | 16 | 5 | 10.3 |
| 4 | - | - | - | 16 | 4.9 | 8 | 32 | 10.5 | 25.4 |
The unambiguity ratios of Pua(DO)/Pua(D), Pua(DO+PPI)/Pua(D+PPI), and Pua(DO+cis(+PPI))/Pua(D+cis(+PPI)) are shown for different numbers of the steps of the perturbation (np). These ratios reveal that employing the DO perturbation reduces the ambiguity significantly compared to the D perturbation.