Table 6 Errors of training and testing sets for each coefficient.

From: Study on the probabilistic characteristics of forces in the support structure of heliostat array based on the DBO-BP algorithm

Item

Training set (Average deviation/Maximum deviation)

Testing set(Average deviation/Maximum deviation)

 

BP

DBO-BP

BP

DBO-BP

Skewness (Fx)

20.7%/38.1%

19.2%/27.1%

23.2%/39.8%

18.7%/34.2%

Skewness (Fz)

24.5%/34.2%

20.8%/29.1%

23.6%/32.7%

21.9%/28.1%

Skewness (My)

24.6%/37.8%

23.4%/29.5%

24.5%/34.2%

20.8%/29.1%

Kurtosis (v)

4.9%/19.6%

4.3%/15.2%

6.6%/23.1%

5.9%/18.0%

Kurtosis(Fz)

6.9%/20.5%

4.7%/16.1%

4.9%/21.5%

5.1%/18.7%

Kurtosis (My)

6.5%/21.3%

3.9%/11.1%

5.4%/20.9%

3.2%/9.0%

  1. Note: deviation =|actual value—training (testing) value|/actual values.