nper

Cumulative settlement

(mm)

The BP neural network

Residual

(mm)

Relative difference (%)

9

7.95

8.0377

0.0877

1.10

10

8.80

8.8932

0.0932

1.06

11

9.47

9.5748

0.1048

1.11

12

10.45

10.5532

0.1037

0.97

13

11.44

11.5436

0.1036

0.91

14

12.49

12.6477

0.1577

1.26

15

13.66

13.8313

0.1713

1.25

16

14.16

14.4136

0.2536

1.79

17

14.46

14.7343

0.2743

1.90

18

14.66

14.9417

0.2817

1.92