Research Article
Modeling Multilevel Supplier Selection Problem Based on Weighted-Directed Network and Its Solution
Table 2
The solutions of tabu search algorithm before and after improvement.
| Network scale | Algorithm | Minimum | Maximum | Average | Variance | Convergence frequency |
| 30 nodes | Tabu search | 443.43 | 554.3 | 505.46 | 48.88 | 375.00 | Dynamic programming- tabu search | 436.5 | 532.2 | 481 | 19.39 | 375.00 |
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