A joint optimisation model for inventory replenishment,product assortment,shelf space and display area allocation decisions |
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Authors: | Moncer A. Hariga Abdulrahman Al-Ahmari Abdel-Rahman A. Mohamed |
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Affiliation: | 1. American University of Sharjah, Engineering Systems Management, P.O. Box 26666, Sharjah, United Arab Emirates;2. Industrial Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia |
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Abstract: | In this paper, we propose an optimisation model to determine the product assortment, inventory replenishment, display area and shelf space allocation decisions that jointly maximize the retailer’s profit under shelf space and backroom storage constraints. The variety of products to be displayed in the retail store, their display locations within the store, their ordering quantities, and the allocated shelf space in each display area are considered as decision variables to be determined by the proposed integrated model. In the model formulation, we include the inventory investment costs, which are proportional to the average inventory, and storage and display costs as components of the inventory costs and make a clear distinction between showroom and backroom inventories. We also consider the effect of the display area location on the item demand. The developed model is a mixed integer non-linear program that we solved using LINGO software. Numerical examples are used to illustrate the developed model. |
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Keywords: | Inventory replenishment Assortment Space allocation Optimization |
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