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

Table 1

Excerpt of the questionnaire for evaluating criteria.

No.	Supplier selection criteria	The importance of criteria for evaluating construction companies
		1	2	3	4	5	6	7	8	9
		Very unimportant		Unimportant		Normal		Important		Very important
1	Company’s suggested net price
2	Company’s qualitative capabilities
3	After construction services
4	Company’s delivery on-time capabilities
5	Company’s geographical situation
6	Company’s organization and management
7	Company’s financial status
8	Company’s capacity and production facilities
9	Company’s partnership antecedents
10	Company’s technical capacity
11	Future potential purchases from Company
12	Company’s operational control (including reporting, quality control, and inventory control system)
13	Company’s status in related industry
14	Company’s individuals antecedents
15	Company’s organizational behavior
16	Company’s eagerness to cooperate
17	Company’s policy of guarantee and legal claims
18	Company’s adaptation with the purchaser’s procedures and instruments
19	Company’s performance antecedents