Prediction Model and Optimization of Coupling Reaction Yield Based on BP Neural Network

Table 2

The results of regression.

Relationship serial number	Functional relationship	R-square
(1)	Y = 0.0236−0.01207 x 1 ^∗ x1−0.0593 x 1−0.0479 x 3 ∗ x3 + 0.127 x 1 ∗ x3	0.312
(2)	Y = 0.6–0.012 x 1 ∗ x1 + 0.08 x 1 + 9.592e-06 x 4 ∗ x4−0.005 x 4 + 5.01e−05 x 1 ∗ x4	0.882
(3)	Y = 0.0601–0.059 x 2 ∗ x2−0.038 x 3 ∗ x3−0.0071 x 3 + 0.093 x 2 ∗ x3	0.621
(4)	Y = 0.46–0.054 x 2 ∗ x2 + 0.148 x 2 + 8.2e-06 x 4 ∗ x4−0.0042 x 4−2.23e-06 x 2 ∗ x4	0.558
(5)	Y = 0.45–0.025 x 3 ∗ x3 + 0.131 x 3 + 8.6e-06 x 4 ∗ x4−0.00405 x 4−0.00028 x 3 ∗ x4	0.258
(6)	Y = 0.023–0.012 x 1 ∗ x1−0.059 x 1−0.0479 x 2 ∗ x20.12706 x 1 ∗ x2	0.236