Fuzzy multi-objective programming for supplier portfolio formation: a credibility-based approach Online publication date: Fri, 20-Jan-2023
by Garima Mittal
International Journal of Operational Research (IJOR), Vol. 45, No. 4, 2022
Abstract: In a multiple-sourcing environment, supplier selection plays an integral role in efficiently managing a supply chain of an organisation. This paper proposes a fuzzy multi-objective programming model using a credibility measure, for forming a portfolio of suppliers. Credibility measure has an advantage of self-duality over more prevalent possibility measure. In this paper credibility measure of a fuzzy event is used to model the three objectives of minimising expected cost, maximising expected quality and maximising the expected on-time delivery, along with other realistic constraints that are integral part of the supplier selection problems. The proposed credibilistic model is solved using a fuzzy goal programming approach that has then been extended to three different scenarios in order to address decision maker's satisfaction with respect to the achievement level of the various objectives. A numerical illustration is also provided to depict the utility of the proposed model and approach.
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