Research Article
Single-Machine Scheduling with Fixed Periodic Preventive Maintenance to Minimise the Total Weighted Completion Times
Table 16
Average computation time of the heuristic algorithms.
| n | WSPTBF | WSPTFF | WSPTFBā+āLIS |
| 5 | 0.00000 | 0.00000 | 0.00000 | 6 | 0.00000 | 0.00000 | 0.00000 | 7 | 0.00000 | 0.00000 | 0.00000 | 8 | 0.00000 | 0.00000 | 0.00000 | 9 | 0.00000 | 0.00000 | 0.00000 | 10 | 0.00000 | 0.00000 | 0.00000 | 11 | 0.00000 | 0.00000 | 0.00000 | 12 | 0.00000 | 0.00000 | 0.00000 | 13 | 0.00000 | 0.00000 | 0.00000 | 14 | 0.00000 | 0.00000 | 0.00000 | 15 | 0.00000 | 0.00000 | 0.00000 | 20 | 0.00000 | 0.00000 | 0.00001 | 25 | 0.00000 | 0.00000 | 0.00001 | 30 | 0.00000 | 0.00001 | 0.00002 | 35 | 0.00001 | 0.00001 | 0.00003 | 40 | 0.00001 | 0.00001 | 0.00004 | 45 | 0.00001 | 0.00001 | 0.00006 | 50 | 0.00001 | 0.00001 | 0.00013 | 60 | 0.00001 | 0.00002 | 0.00014 | 70 | 0.00002 | 0.00002 | 0.00024 | 80 | 0.00002 | 0.00003 | 0.00031 | 90 | 0.00002 | 0.00003 | 0.00046 | 100 | 0.00003 | 0.00004 | 0.00066 | 200 | 0.00010 | 0.00013 | 0.00513 | 300 | 0.00020 | 0.00026 | 0.02055 | 400 | 0.00032 | 0.00041 | 0.06735 | 500 | 0.00046 | 0.00060 | 0.13077 | 1000 | 0.00159 | 0.00211 | 1.54310 |
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