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A deterministic, multi-item inventory model with supplier selection and imperfect quality

机译：确定性的多项目库存模型，其中包含供应商选择和质量欠佳的情况

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This paper considers the scenario of supply chain with multiple products and multiple suppliers, all of which have limited capacity. We assume that received items from suppliers are not of perfect quality. Items of imperfect quality, not necessarily defective, could be used in another inventory situation. Imperfect items are sold as a single batch, prior to receiving the next shipment, at a discounted price. The demand over a finite planning horizon is known, and an optimal procurement strategy for this multi-period horizon is to be determined. Each of products can be sourced from a set of approved suppliers, a supplier-dependent transaction cost applies for each period in which an order is placed on a supplier. A product-dependent holding cost per period applies for each product in the inventory that is carried across a period in the planning horizon. Also a maximum storage space for the buyer in each period is considered. The decision maker, the buyer, needs to decide what products to order, in what quantities, with which suppliers, and in which periods. Finally, a genetic algorithm (GA) is used to solve the model.
机译：本文考虑了具有多个产品和多个供应商的供应链场景，所有这些都具有有限的能力。我们假设从供应商处收到的物品质量不理想。质量不理想的物品（不一定是有缺陷的物品）可以在其他库存情况下使用。不完美的商品在收到下一批货之前以折扣价单批出售。有限规划范围内的需求是已知的，并且将确定此多期限范围内的最佳采购策略。每个产品都可以从一组批准的供应商处采购，与供应商有关的交易成本适用于向供应商下订单的每个期间。每个期间与产品相关的持有成本适用于计划范围内某个期间内结转的库存中的每个产品。此外，还要考虑每个时期买方的最大存储空间。决策者，即购买者，需要决定订购哪些产品，多少数量，与哪些供应商以及在哪个时期内。最后，使用遗传算法（GA）求解模型。

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