The timeliness of order deliveries seriously impacts customers’ evaluation logistics services and, hence, has increasingly received attention. Due to the diverse and large quantities orders under background electronic commerce, how pick efficiently while also adapting these features become one most challenging problems for distribution centers. However, previous studies have not accounted diffe...

In this paper, a mixed-integer linear programming model is proposed to integrate batch picking and distribution scheduling problems in order to optimize them simultaneously in an order picking warehouse. A tow-phase heuristic algorithm is presented to solve it in reasonable time. The first phase uses a genetic algorithm to evaluate and select permutations of the given set of customers. The seco...

This article focuses on the integration of order batching and picker scheduling decisions while taking into account two objectives that have been considered in literature, namely minimization both total travel time to collect all items makespan pickers. integrated problem not only occurs naturally wave picking systems which latest orders becomes key performance metric, but also arises when ther...