Storage assignment for newly arrived items in forward picking areas with limited open locations

Storage assignment for newly arrived items in forward picking areas with limited open locations
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在开放位置有限的前向拣选区域中对新到达的物品进行存储分配

DOI:
10.1016/j.tre.2021.102359
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发表时间:
2021-07
期刊:
Transportation Research Part E: Logistics and Transportation Review
影响因子:
--
通讯作者:
Yugang Yu
Yugang Yu
中科院分区:
其他
文献类型:
--
作者:
Xiaolong Guo;Ran Chen;Shaofu Du;Yugang Yu

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在电子商务仓库中,补货操作涉及将订购的物品从储备区运输到向前拣选区。在本文中,我们研究了在拣选之前将这些物品(称为新到物品)存储在向前拣选区域的开放存储位置的位置,以最大限度地减少给定拣选订单的总行程距离。先前存储在前方区域中的项目所占用的位置不可用。该问题被表述为一个整数规划,并证明是NP-难的。我们提出了一个两阶段的分解算法,表明它提供了高质量的解决方案迅速。与文献中提出的方法和实际使用的方法相比,旅行距离大大减少。此外,我们的数值研究表明,考虑到项目以前被存储的约束,这在以前的研究中往往被忽略,可以提高采摘性能超过5%。我们将我们提出的算法应用于中国第三方物流零售商的真实的数据,以表明它显着优于该公司目前使用的政策。
In e-commerce warehouses, replenishment operations involve the transportation of ordered items from reserve areas to forward picking areas. In this paper, we study where to store these items (called newly arrived items) in open storage locations in forward picking areas prior to picking to minimize the total travel distance for given picking orders. The locations occupied by items previously stored in the forward area are not available. The problem is formulated as an integer program and proved to be NP-hard. We propose a two-stage decomposition algorithm, showing that it provides high-quality solutions quickly. Compared with methods proposed in the literature and used in practice, the travel distance is substantially reduced. Also, our numerical study shows that considering the constraint that items have previously been stored, which has often been ignored in previous research, can improve the picking performance by more than 5%. We apply our proposed algorithm to real data from a Chinese 3PL retailer to show that it significantly outperforms the policy the company currently uses.
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