Application of Fuzzy Analytical Network Process and VIKOR Model in Foreign Trade Supplier Selection

Table 2

Correspondence between Saaty scale values and fuzzy numbers.

Saaty scales	m values (1∼9)	Fuzzy numbers
Equal importance	1	= (1, 1, 1)
Between weak importance and equal importance	2.1	= (1, 2.1, 3.3)
Weak importance	3.3	= (2.1, 3.3, 4.5)
Between essential importance and weak importance	4.5	= (3.3, 4.5, 5.2)
Essential importance	5.2	= (4.5, 5.2, 6.7)
Between very strong importance and essential importance	6.7	= (5.2, 6.7, 7.3)
Very strong importance	7.3	= (6.7, 7.3, 8.4)
Between absolute importance and very strong importance	8.4	= (7.3, 8.4, 9)
Absolute importance	9	= (8.4, 9, 9)

Source: Hsu, 2010, p13.