Sample serial number

Neural network forecast results (mg/L)

Neural network prediction error %

WLS-SVM forecast results (mg/L)

WLS-SVM prediction error%

Standard content (mg/L)

21

5.37

2.33

5.20

−0.97

5.25

22

5.94

7.93

5.55

0.83

5.50

23

5.35

−6.98

5.73

−0.29

5.75

24

5.93

−1.23

6.16

2.59

6.00

25

5.46

−12.66

6.25

−0.06

6.25

26

5.73

−11.81

6.56

1.00

6.50

27

6.74

−0.10

6.61

−2.09

6.75

28

6.49

−7.28

7.06

0.83

7.00

29

6.70

−7.62

7.31

0.78

7.25

30

7.22

−3.75

7.68

2.34

7.50

31

7.70

−0.60

7.82

0.90

7.75

32

7.19

−10.17

7.90

−1.24

8.00

33

8.35

1.19

8.30

0.58

8.25

34

8.61

1.34

8.38

−1.47

8.50

35

8.94

2.18

8.90

1.77

8.75

36

9.63

6.95

9.03

0.33

9.00

37

8.46

−8.55

9.47

2.40

9.25

38

8.98

−5.48

9.38

−1.24

9.50

39

9.85

1.04

9.70

−0.50

9.75

40

8.99

−10.12

10.29

2.87

10.00