Comprehensive Analysis of Research for Warehouse Pick Path Problem

Improving the overall performance of warehouse operation is the goal of every operator be it in the manufacturing or in a distribution business setting. To do this, an efficient optimization of order picking process is needed to reduce the time for an orders to ship out, which in turn, will improve the overall effectiveness of its workers. Several approaches had been applied including the improvement of warehouse layout, routing methods, item storage set-up and batching. This paper focused on the routing method to improve the order picking process and selected different studies from 2013 to 2018 for analyzation and evaluation. The selection of different studies was based on the method they applied such as the used of unmodified algorithm, enhancement or modification of existing algorithm, combining several algorithm, and other framework or model to improve the routing methods. Results shown that the unmodified algorithm had limited features and capability. Modification greatly improve the efficiency and effectiveness in its application and combining 2 or more algorithm resulted better results and efficiency and effectiveness. Lastly, the application of other frameworks were also useful to improve order picking time but the consistency in its application requires constant analysis, and evaluation to measure OP time performance.