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

Table 12

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

SA	⁢Conventional QFD		⁢Fuzzy QFD		⁢Rough QFD
		Rank		Rank		Rank
SA1	0.64	4	[0.31, 0.82]	4	[0.36, 0.64]	4
SA2	0.83	2	[0.47, 0.87]	2	[0.51, 0.85]	2
SA3	1.00	1	[0.53, 1.00]	1	[0.60, 1.00]	1
SA4	0.00	7	[0.00, 0.40]	7	[0.00, 0.22]	7
SA5	0.29	6	[0.27, 0.65]	6	[0.20, 0.49]	6
SA6	0.35	5	[0.25, 0.64]	5	[0.22, 0.58]	5
SA7	0.61	3	[0.36, 0.78]	3	[0.36, 0.71]	3