Table 3: Result comparison.

Mutation strategyFitness Average labor demandMaximum labor demandMinimum labor demandProject durationGeneration found best

DE/Rand/1
 Best3066.013.816.07.032.059.0
 Average3122.613.817.19.432.0268.7
 Standard deviation68.30.11.80.90.0110.4
 Worst3253.514.021.010.032.0461.0

DE/Rand/2
 Best3247.013.917.04.030.037.0
 Average3388.314.221.16.531.8163.7
 Standard deviation69.90.32.61.70.575.8
 Worst3515.014.826.010.032.0315.0

DE/Best/1
 Best3085.013.816.05.032.025.0
 Average3166.113.818.38.232.074.7
 Standard deviation78.80.11.71.80.053.4
 Worst3347.014.021.012.032.0223.0

DE/Best/2
 Best3055.513.715.07.032.050.0
 Average3118.513.817.010.232.0133.2
 Standard deviation51.30.11.11.50.049.3
 Worst3257.014.119.013.032.0223.0

DE/Target-to-Best/1
 Best3054.013.715.07.032.069.0
 Average3092.713.817.09.832.0148.0
 Standard deviation29.10.11.51.80.072.7
 Worst3168.013.920.013.032.0344.0

DE/Target-to-Best/2
 Best3126.013.815.04.031.031.0
 Average3245.514.018.47.532.0123.1
 Standard deviation57.90.11.92.00.250.2
 Worst3357.014.323.011.032.0217.0

Hybrid DE/Rand/1 and DE/Best/1
 Best3054.013.715.08.032.069.0
 Average3099.013.817.410.432.0146.4
 Standard deviation27.40.01.81.00.073.7
 Worst3151.013.923.012.032.0272.0