Group Decision Making Process for Supplier Selection with TOPSIS Method under Interval-Valued Intuitionistic Fuzzy Numbers

Table 13

Weighted decision matrix.

	Company 1	Company 2	Company 3	Company 4
	𝑆1	𝑆2	𝑆3	𝑆4
𝐶1	⟨[0.206,0.320],[0.477,0.571]⟩	⟨[0.491,0.655],[0.164,0.290]⟩	⟨[0.241,0.362],[0.431,0.532]⟩	⟨[0.511,0.675],[0.150,0.275]⟩
𝐶2	⟨[0.168,0.279],[0.541,0.613]⟩	⟨[0.557,0.723],[0.114,0.214]⟩	⟨[0.535,0.705],[0.127,0.232]⟩	⟨[0.413,0.587],[0.215,0.337]⟩
𝐶3	⟨[0.377,0.528],[0.244,0.354]⟩	⟨[0.519,0.691],[0.133,0.241]⟩	⟨[0.466,0.625],[0.157,0.266]⟩	⟨[0.480,0.653],[0.170,0.282]⟩
𝐶4	⟨[0.264,0.412],[0.431,0.556]⟩	⟨[0.295,0.434],[0.375,0.497]⟩	⟨[0.284,0.420],[0.397,0.514]⟩	⟨[0.223,0.351],[0.436,0.562]⟩
𝐶5	⟨[0.345,0.481],[0.257,0.399]⟩	⟨[0.330,0.460],[0.300,0.430]⟩	⟨[0.129,0.222],[0.579,0.672]⟩	⟨[0.405,0.557],[0.203,0.351]⟩
𝐶6	⟨[0.357,0.494],[0.149,0.389]⟩	⟨[0.180,0.283],[0.456,0.618]⟩	⟨[0.249,0.391],[0.323,0.540]⟩	⟨[0.323,0.456],[0.195,0.426]⟩