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

Table 11

Aggregated IVIF decision matrix.

	Company 1	Company 2	Company 3	Company 4
	𝑆1	𝑆2	𝑆3	𝑆4
𝐶1	⟨[0.308,0.411],[0.416,0.468]⟩	⟨[0.733,0.839],[0.066,0.119]⟩	⟨[0.360,0.464],[0.364,0.419]⟩	⟨[0.761,0.865],[0.050,0.100]⟩
𝐶2	⟨[0.215,0.316],[0.513,0.564]⟩	⟨[0.715,0.820],[0.061,0.113]⟩	⟨[0.688,0.799],[0.074,0.134]⟩	⟨[0.530,0.666],[0.168,0.252]⟩
𝐶3	⟨[0.484,0.599],[0.199,0.272]⟩	⟨[0.667,0.784],[0.081,0.144]⟩	⟨[0.599,0.709],[0.107,0.172]⟩	⟨[0.617,0.740],[0.120,0.190]⟩
𝐶4	⟨[0.519,0.648],[0.228,0.302]⟩	⟨[0.579,0.682],[0.153,0.211]⟩	⟨[0.557,0.660],[0.183,0.236]⟩	⟨[0.437,0.551],[0.235,0.311]⟩
𝐶5	⟨[0.577,0.684],[0.140,0.201]⟩	⟨[0.552,0.654],[0.190,0.243]⟩	⟨[0.215,0.316],[0.513,0.564]⟩	⟨[0.677,0.791],[0.077,0.138]⟩
𝐶6	⟨[0.621,0.726],[0.102,0.163]⟩	⟨[0.313,0.415],[0.426,0.477]⟩	⟨[0.433,0.574],[0.285,0.369]⟩	⟨[0.561,0.670],[0.150,0.213]⟩