4.2.2. Fitness Function

The objective of resource supply is to minimize the running cost and transportation time, and the dimensions used are not the same. Therefore, the fitness function of the lower resource transportation model was constructed using the weighted aggregation method used in upper planning. Let *β*<sup>1</sup> and *β*<sup>2</sup> represent the weights of the two objective functions. The fitness function is shown in Equation (25), and the maximum fitness value is required.

$$Fitness(F\_2) = \beta\_1 \frac{z\_c^{\text{max}} - z\_c}{z\_c^{\text{max}} - z\_c^{\text{min}}} + \beta\_2 \frac{z\_t^{\text{max}} - z\_t}{z\_t^{\text{max}} - z\_t^{\text{min}}} \tag{25}$$
