Research Article
NIDE: A Novel Improved Differential Evolution for Construction Project Crashing Optimization
Table 1
Project information.
| | ID | Activity description | Pre. | Time-cost function | Type |
| | 1 | Site preparation | — | | Discrete |
| | 2 | Forms and rebars | 1 | | Discrete |
| | 3 | Excavation | 1 | | Discrete |
| | 4 | Precast concrete girders | 1 | | Discrete |
| | 5 | Pour foundation and piers | 2, 3 | , , , , | Discrete |
| | 6 | Deliver precast concrete girders | 4 | | Nonlinear | |
| | 7 | Erect girders | 5, 6 | | Piecewise linear | | | |
| | 8 | Finish up | 7 | | Linear |
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