Table 2.

Triangular fuzzy conversion scale

Linguistic scale	TFNs/reciprocal TFNs
AS—absolutely strong	(3.50, 4.00, 4.50)
VS—very strong	(2.50, 3.00, 3.50)
FS—fairly strong	(1.50, 2.00, 2.50)
SS—slightly strong	(0.50, 1.00, 1.50)
E—equal	(1.00, 1.00, 1.00)
SW—slightly weak	(0.67, 1.00, 2.00)
FW—fairly weak	(0.40, 0.50, 0.67)
VW—very weak	(0.29, 0.33, 0.40)
AW—absolutely weak	(0.22, 0.25, 0.29)