Optimizing case-pack sizes in the bricks-and-mortar retail trade

Thomas Wensing (), Michael G. Sternbeck () and Heinrich Kuhn ()
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Thomas Wensing: Catholic University of Eichstätt-Ingolstadt
Michael G. Sternbeck: Catholic University of Eichstätt-Ingolstadt
Heinrich Kuhn: Catholic University of Eichstätt-Ingolstadt

OR Spectrum: Quantitative Approaches in Management, 2018, vol. 40, issue 4, No 4, 913-944

Abstract: Abstract Before reaching the store, products generally flow through the retail distribution system as larger bundles, the so-called case packs (CP). In several studies these case packs have been identified as having a significant impact on distribution logistics efficiency. In this paper we develop a quantitative model and solution approach determining optimal case-pack sizes for non-perishable products in grocery retailing. The model captures the relevant operative cost drivers along the internal supply chain of a large bricks-and-mortar retailer. It explicitly represents each day of the retailer’s business week, where the replenishment doctrine considered generalizes the well-known periodic review reorder point (r, s, nq) policy as a stationary cyclic version. Exact and approximate methods are developed to evaluate the costs of a model instance. In addition, an optimization procedure is outlined that uses either exact or approximate methods to identify optimal and near-optimal CP sizes for a single store as well as for a network of multiple stores to be operated with one common CP. Applied to real-world examples of a large European retail chain, the methods reveal average cost improvement potential of more than 20% by adjusting the CP sizes that are currently in use. The approach presented is thus shown to be a valuable addition to any integrative retail supply chain planning system. Its results are directly applicable to retail practice.

Keywords: Retail operations; Case-pack size; Inventory; Distribution system (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1007/s00291-018-0515-5

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