Table 3 Horizontal coding table of the parameters.

From: Experimental study on DEM parameters calibration for organic fertilizer by the particle swarm optimization − backpropagation neural networks

Levels

Test parameters

CORO−p

COSO−O

COSO−p

CODO−O

−2

0.1

0.46

0.27

0.36

−1

0.28

0.48

0.29

0.38

0

0.45

0.49

0.3

0.39

+ 1

0.63

0.51

0.32

0.41

+ 2

0.8

0.52

0.33

0.42

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