具有缺陷品的双渠道供应链库存优化策略

Inventory Optimization Strategy for Dual-channel Supply Chain with Defective Products

为研究双渠道供应链库存优化问题,考虑由一个网络零售商和一个传统零售商构成的缺陷品双渠道供应链系统,允许不同渠道零售商之间采用横向转运策略协调库存水平,引入渠道间消费者购买转移,运用马尔科夫链来描述零售商的库存状态,建立以库存成本最小为目标的数学模型,并运用遗传算法进行求解。通过对允许转运和不允许转运2种方案的对比,得出在分销缺陷产品的双渠道供应链中,双渠道间采取转运策略可以降低最优库存量和总成本;随着购买转移概率的增加和产品缺陷率的增加,转运策略带来的系统绩效均不断降低。

In order to study the inventory optimization problem of dual-channel supply chain,a dual-channel supply chain system of defective goods consisting of an online retailer and a traditional retailer is considered.It allows different retailers to rebalance the inventory level by lateral transshipment strategy,introducing customers switching between channels,and using Markov chain to depict the retailer's inventory status.Finally,a minimum inventory cost model is established,which is solved by genetic algorithm.By comparing the two schemes of allowable transshipment and non-allowable transshipment,it is concluded that in the dual-channel supply chain of defective products,the inventory and total cost can be reduced by adopting transshipment strategy between two channels;and that with the increase of customers switching probability and product defect rate,the system performance induced by the transshipment strategy is decreased.