A Novel Continuous Intuitionistic Fuzzy CODAS Method and Its Application to IOT Service Provider Selection for Sustainable Supply Chain

Alkan N., Kahraman C.

Intelligent and Fuzzy Systems - Intelligence and Sustainable Future Proceedings of the INFUS 2023 Conference, İstanbul, Turkey, 22 - 24 August 2023, vol.759 LNNS, pp.371-381 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 759 LNNS
  • Doi Number: 10.1007/978-3-031-39777-6_45
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.371-381
  • Keywords: CINFUS, CODAS, Continuous Intuitionistic Fuzzy Sets, IOT, sustainable supply chain
  • Istanbul Technical University Affiliated: Yes


Intuitionistic fuzzy sets (IFSs), which are the most widely used fuzzy set extension in the literature, are represented by membership and non-membership degrees. Since IFSs and their direct extensions are usually expressed with crisp membership and non-membership degrees, it is known that the IFSs existing in the literature are discrete IFSs or linear continuous IFSs. However, although IFSs have been used to tackle different real-life problems, it is often difficult to estimate crisp values for membership and non-membership degrees. Therefore, in this study, it is aimed to develop a multi-criteria decision-making model based on novel nonlinear continuous intuitionistic fuzzy sets. CINFUSs, consisting of membership and non-membership degrees represented by second-order nonlinear functions, have been used to develop the CODAS method in a fuzzy environment. The CINFUS-based CODAS method developed in the study has been applied to the Internet of things (IOT) service provider selection for sustainable supplier selection.