A Rough VIKOR-Based QFD for Prioritizing Design Attributes of Product-Related Service

Table 11

Ranking of PAs in the conventional, fuzzy, and rough QFD .

PA	⁢Conventional QFD		⁢Fuzzy QFD		⁢Rough QFD
		Rank		Rank		Rank
PA1	0.92	2	[0.64, 0.95]	2	[0.73, 0.96]	2
PA2	0.00	7	[0.00, 0.33]	7	[0.00, 0.20]	7
PA3	0.53	4	[0.35, 0.68]	4	[0.40, 0.65]	4
PA4	1.00	1	[0.70, 1.00]	1	[0.84, 1.00]	1
PA5	0.78	3	[0.53, 0.90]	3	[0.60, 0.86]	3
PA6	0.45	5	[0.32, 0.65]	5	[0.35, 0.60]	5
PA7	0.21	6	[0.15, 0.52]	6	[0.15, 0.44]	6