Table 2.
Comparison of results obtained for the tryptophan model with different methods. All the results that violate the lower bound for X3 were reproduced with GP by relaxing such bound. Constraint violations are shown in boldface.
| iterative | Modified | |||||
| basal | IOM | IOM | IOM | GP | SQP | |
| X1 | 0.18465 | 1.198 |X1|0 | 1.198 |X1|0 | 1.198 |X1|0 | 1.199 |X1|0 | 1.2 |X1|0 |
| X2 | 7.9868 | 1.071 |X2|0 | 1.095 |X2|0 | 1.055 |X2|0 | 1.148 |X2|0 | 1.180 |X2|0 |
| X3 | 1418 | 0.347 |X3|0 | 0.465 |X3|0 | 0.273 |X3|0 | 0.8 |X3|0 | 0.825 |X3|0 |
| X4 | 0.00312 | 0.0058 | 0.0053 | 0.062 | 0.00414 | 0.0035 |
| X5 | 5 | 4 | 4 | 4 | 4 | 4 |
| X6 | 2283 | 5000 | 5000 | 5000 | 5000 | 2384 |
| X7 | 430 | 1000 | 1000 | 1000 | 1000 | 1000 |
| Vtrp | 1.310 | 4.26 |Vtrp|0 | 3.884 |Vtrp|0 | 4.54 |Vtrp|0 | 3.062 |Vtrp|0 | 2.61 |Vtrp|0 |