Research Article
A Nonlinear Multiobjective Bilevel Model for Minimum Cost Network Flow Problem in a Large-Scale Construction Project
Table 8
Computation time and memory used by MOBLPSO, MOBLGA and MOBLSA.
| Type | Combination of weights | Minimal weight sum value of the two objectives | Average computation time (min) | | | | MOBLPSO | MOBLGA | MOBLSA | MOBLPSO | MOBLGA | MOBLSA |
| 1 | | | 1152.027 | 1160.989 | 1152.531 | 20.856 | 25.899 | 34.458 | 2 | | | 1024.272 | 1032.419 | 1024.273 | 20.926 | 26.032 | 33.921 | 3 | | | 896.238 | 903.848 | 897.214 | 21.052 | 25.679 | 34.068 | 4 | | | 769.472 | 775.277 | 769.555 | 21.158 | 25.329 | 35.568 | 5 | | | 641.786 | 646.706 | 641.897 | 20.963 | 26.169 | 35.012 | 6 | | | 514.148 | 518.136 | 514.216 | 20.678 | 26.969 | 35.142 | 7 | | | 386.486 | 388.529 | 386.521 | 21.203 | 26.135 | 34.791 | 8 | | | 258.792 | 260.836 | 258.792 | 20.734 | 25.475 | 35.291 | 9 | | | 131.081 | 132.143 | 131.081 | 21.134 | 26.189 | 34.815 |
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