Abstract: Mail order companies like Zalando or Amazon reported a significant increase regarding the number of incoming … (order pickers) who are employed on a large scale in order to enable a fast processing of the orders. However, due to limited … space, aisles are often very narrow in warehouses, and order pickers cannot pass or overtake each other. Thus, an order …

In manual order picking systems, order pickers walk or drive through a distribution warehouse in order to collect items … which are requested by (internal or external) customers. In order to perform these operations efficiently, it is usually … required that customer orders are combined into (more substantial) picking orders of limited size. The Order Batching Problem …