Table 3 Average relative error values corresponding to the number of nodes in different hidden layers.

From: Construction cost prediction model for agricultural water conservancy engineering based on BIM and neural network

Number of nodes in the hidden layer

5

6

7

8

9

10

11

12

13

14

Average relative error(%)

5.25

3.88

5.38

5.79

8.23

9.47

7.79

8.87

3.63

7.22

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