## Interval-Valued Intuitionistic Fuzzy Decision-Making Method using Index Matrices and Application in Outsourcing

### Velichka Traneva, Stoyan Tranev, Deyan Mavrov

DOI: http://dx.doi.org/10.15439/2021F77

Citation: Proceedings of the 16th Conference on Computer Science and Intelligence Systems, M. Ganzha, L. Maciaszek, M. Paprzycki, D. Ślęzak (eds). ACSIS, Vol. 25, pages 251–254 (2021)

Abstract. Selecting a suitable outsourcing service provider is a challenging problem that requires discussion among a group of experts. The problems of this type belongs to the area of multicriteria decision-making. Interval-valued intuitionistic fuzzy sets, which are an extension of intuitionistic fuzzy sets, are a capable tool in modeling uncertain problems. In this paper we will formulate an optimal interval-valued intuitionistic fuzzy decision-making problem in outsourcing and propose a new approach for the selection of the most appropriate candidates; as well as a software for its automated solution. An application of the algorithm on real data from a refinery is demonstrated.

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