Then the incremental quantity discounts was taken into account and a PSO-based algorithm was developed to obtain the optimal (R, Q) policy and selection supplier for the buyer.

而后进一步考虑累进制数量折扣，给出基于粒子群算法的求解方法，通过算例和仿真讨论了供应商选择问题。

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The new JIT purchasing model is discussed respectively with all unit quantity discounts and incremental quantity discounts, also the paper gives the algorithm and example for the model.

分别研究了全单位数量折扣和累进制数量折扣两种情况下的JIT采购，给出了模型的算法和算例。

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In multi-item ordering problems with fund constraint, when the supplier offers incremental quantity discounts, the retailer will adjust the inventory policy to minimize the inventory cost.

以零售商库存成本最小化为目标，零售商进行多品种订购过程面临有限资金约束时，面对供应商提供的累进制数量折扣优惠，应如何调整其库存策略。

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