Coefficients | Linear model | Quadratic model | Exponential model | |||
LSRM | PSO | LSRM | PSO | LSRM | PSO | |
a | 1.9406 | 1.947 | 9.96 | 9.91 | 2654.3 | 2662.5 |
b | 2685.6 | 2695.82 | −121.43 | −121.58 | 1.0006 | 1.0008 |
c | - | - | 2978.2 | 2990.2 | - | - |