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

-

-