Table 8.
Stepwise context reduction for the nuclear SSU rRNA dataset using the likelihood-based approach.
| Model | Contexts | Annealing | Melting | log BF |
| GTR16C | 16 (96) | [-21.25; -15.74] | [-19.29; -14.31] | -17.65 |
| GTR15C | 15 (90) | [-17.17; -13.45] | [-14.19; -10.30] | -13.78 |
| GTR14C | 14 (84) | [-14.05; -10.21] | [-10.09; -5.13] | -9.87 |
| GTR13C | 13 (78) | [-11.07; -7.85] | [-6.80; -3.42] | -7.28 |
| GTR12C | 12 (72) | [-2.61; 1.25] | [-0.71; 3.31] | 0.31 |
| GTR11C | 11 (66) | [-0.11; 3.55] | [0.62; 3.77] | 1.96 |
| GTR10C | 10 (60) | [-2.33; 1.28] | [8.76; 13.06] | 5.19 |
| GTR9C | 9 (54) | [6.94; 10.27] | [9.03; 13.94] | 10.05 |
| GTR8C | 8 (48) | [9.54; 12.82] | [12.12; 16.21] | 12.67 |
| GTR7C | 7 (42) | [12.80; 16.45] | [18.26; 22.96] | 17.62 |
| GTR6C | 6 (36) | [13.75; 16.89] | [21.71; 26.13] | 19.62 |
| GTR5C | 5 (30) | [15.87; 18.89] | [17.86; 22.19] | 18.70 |
| GTR4C | 4 (24) | [13.03; 16.88] | [17.38; 20.71] | 17.00 |
| GTR3C | 3 (18) | [9.43; 12.63] | [12.61; 15.66] | 12.58 |
| GTR2C | 2 (12) | [11.69; 15.19] | [12.84; 16.58] | 14.08 |
| GTR | 1 (6) | - | - | 0 |
The stepwise context reduction using the likelihood-based clustering approach reveals an optimal model with six clusters for the nuclear SSU rRNA dataset (GTR6C). It attains a log Bayes Factor of 19.62 (as compared to GTR1C), a significant improvement over the full context-dependent model (GTR16C).