NO

Formula

Authors

1

${\beta }_k^c=\left(1-{\theta }_k\right){\beta }_k^{HS}+{\theta }_k{\beta }_k^{DY}$

Andrei [15]

2

${\beta }_k^{Ac}=\left(1-{\theta }_k\right){\beta }_k^{PRP}+{\theta }_k{\beta }_k^{DY}$

Yan [16]

3

${\beta }_k^N=\left(1-{\theta }_k\right){\beta }_k^{FR}+{\theta }_k{\beta }_k^{MMWU}$

Li and Sun [17]

4

${\beta }_k^{hyb}=\left(1-{\theta }_k\right){\beta }_k^{LS}+{\theta }_k{\beta }_k^{DY}$

Liu, J.K. and Li, Sij [1]

5

${\beta }_k^{hyb}=\left(1-{\theta }_k\right){\beta }_k^{LS}+{\theta }_k{\beta }_k^{FR}$

Djordjevic’ [18]

6

7

${\beta }_k^{hyb}=\left(1-{\theta }_k\right){\beta }_k^{HS}+{\theta }_k{\beta }_k^{FR}$

${\beta }_k^{hyb}=\left(1-{\theta }_k\right){\beta }_k^{LS}+{\theta }_k{\beta }_k^{FR}$

Djordjevic’ [19]

Djordjevic’ [20]

8

${\beta }_k^c=\left(1-{\theta }_k\right){\beta }_k^{HS}+{\theta }_k{\beta }_k^{CD}$

Xiuyun, et al. [21]

9

${\beta }_k^{LSDY}=\left(1-{\gamma }_k\right){\beta }_k^{LS}+{\gamma }_k{\beta }_k^{DY}$

Abdullahi and Ahmad [22]

10

${\beta }_k^{HCG}={\lambda }_k{\beta }_k^{DY}+\left(1-{\lambda }_k\right){\beta }_k^{HS}$

Livieris, Tampakas, and Pintelas [23]