Technical Note: A Joint Pricing, Supplier Selection, and Inventory Replenishment Model Using the Logit Demand Function*
重新审视了Adeinat和Ventura（2015）的两阶段系统问题，采用Logit函数建模价格敏感需求，提出两阶段分段线性逼近方法求解联合定价、供应商选择和库存补货模型，并通过数值研究验证精确需求曲线的重要性。
ABSTRACT We revisit the joint pricing, supplier selection, and inventory replenishment problem for a single item in a two‐stage system examined by Adeinat and Ventura (2015) and use the logit function to model the price‐sensitive demand. This article provides a detailed analysis regarding the shape and properties of the logit demand function. In this context, we propose a two‐stage piecewise‐linear approximation technique to solve the integrated pricing, supplier selection, and inventory replenishment model. Besides, in this research, we provide sufficient justification for the selection of the logit demand function as well as a comparison with other demand functions. A numerical study further suggests the importance of using a precise demand curve to select the set of suppliers, coordinate inventory, and accurately optimize the profit function.