Table 3.

Definitions of the Notations in This Paper.

Notations	Definitions
$x$	The universe of values of $\stackrel{\sim }{A}$ set
$u$	On the degree to which any element $x$ on the domain $X$ belongs to the $\stackrel{\sim }{A}$ set
$\alpha$	The threshold for the combination of subjective weight and objective weight
$\beta$	Threshold combining score function and symbol distance threshold
${\mu }_{\stackrel{\sim }{A}}\left(x,u\right)$	Membership of $u$ set
$P$	Number of decisions
$M$	Number of alternatives
$N$	Number of criteria
$D$	Criteria have a direct effect on another criterion
$I$	Criteria have an indirect effect on another criterion
$O$	The criteria have no direct or indirect influence on another criterion
$\stackrel{\sim }{B}$	Type-2 fuzzy sets
$\stackrel{\sim }{A}$	IT2FSs Assessment
$A_B$	The weight matrix of other criteria relative to the optimal criteria
$A_W$	Weight matrix of other criteria relative to the worst criteria
$E$	Criteria interaction matrix
$Y$	Adjacency Matrix
$V$	Reachable matrix
$\underset{\_}{R}$	Decision Matrix
$\overline{R}$	The score function is calculated to get the matrix
$\overline{\overline{R}}$	The score function and sign distance are calculated to get a matrix
$R\left(A_i\right)$	Average sort function
$d$	Symbol distance
$Z$	Comprehensive distance between the two solutions
$\overline{Z}$	Comprehensive score function of the criteria
${\omega }_l$	weight of DMs
${\omega }^B$	The best subjective weight set determined by the BWM method
$\mathit{CR}$	Consistency test value of subjective weight
${\omega }^{\mathit{IB}}$	The best subjective weight set determined by the ISM-BWM method
${\omega }_D$	Weights determined by the maximum deviation method
${\omega }_{\mathit{nr}}$	The relative weight of alternative n to alternative r
${\zeta }_m$	The total value of alternative m
${\varphi }_{\mathit{me}}^n$	The relative dominance of alternative m to alternative e on the nth criteria
${\phi }_{\mathit{me}}$	Relative dominance of alternative m over alternative e
${\omega }^D$	Weights determined by the maximum deviation method
${\omega }^o$	Objective weight determined by CSMDM
${\omega }_n$	Comprehensive weight of the nth criteria
$\xi$	Consistency test number in BWM method