Research Article

Research on the Prediction of the Water Demand of Construction Engineering Based on the BP Neural Network

Table 4

Precision level and calculation termination of PSO at the 1000th iteration.

Iteration (n)Fitness (n − 1)Fitness (n)Fitness (n) − Fitness (n − 1)Result

4981.4883441.4883440 < 0.00001Continue
4991.4883441.4558483560.032495395 > 0.0001Continue
5001.4558483561.4558483560 < 0.0001Continue
10001.4558481.4558480 < 0.0001Stop