Table 9 Optimal values of the upper- and lower-level
From: A nonlinear bi-level programming approach for product portfolio management
Comparison | Evaluation criteria | ||
|---|---|---|---|
Utility | Cost (RMB) | Objective function | |
Upper-level | 68.84 | 20,781 | 17.73 |
Lower-level | 60.59 | 21,524 | 12.89 |