Title: Supplier selection and order allocation in the presence of suppliers with exact annual capacity

Authors: Ali Ekici; Okan Örsan Özener; Milad Elyasi

Addresses: Department of Industrial Engineering, Ozyegin University, Istanbul, Turkey ' Department of Industrial Engineering, Ozyegin University, Istanbul, Turkey ' Department of Industrial Engineering, Ozyegin University, Istanbul, Turkey

Abstract: In this paper, we focus on the supplier selection and order quantity allocation for a single retailer. The retailer orders a product from multiple suppliers with capacities, adds value to the product and fulfils the demand while meeting the minimum quality level. There is a distinct difference between our work and the prior works in the literature in that we assume the (annual) capacities of the suppliers to be exact annual capacities, i.e., the total order amount in a given calendar/fiscal year from a supplier must be less than or equal to its capacity. First, we discuss the implications of this exact annual capacity assumption on the ordering policy of the retailer. Next, to determine an ordering policy, we propose a heuristic algorithm using a novel idea of iteratively updating the annual ordering cost estimates. We demonstrate the efficacy of the proposed algorithm on randomly generated instances. [Submitted: 18 March 2019; Accepted: 22 November 2020]

Keywords: supplier selection; long-run average annual capacity; perfect rate; capacitated suppliers; exact annual capacity.

DOI: 10.1504/EJIE.2021.10036452

European Journal of Industrial Engineering, 2021 Vol.15 No.6, pp.803 - 824

Accepted: 22 Nov 2020
Published online: 27 Oct 2021 *

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