Research on SVR Water Quality Prediction Model Based on Improved Sparrow Search Algorithm

Table 3

Average SN ratio for GP at each factor and level.

Factor	Level 1	Level 2	Level 3	Max-min	Rank
A	−10.378	−11.898	−9.978	1.919	2
B	−9.435	−10.867	−11.951	2.516	1
C	−10.803	−10.349	−11.479	1.130	3

The bold values demonstrate the optimal response value and the highest S/N for each optimisation objective.