Abstract:

This is an effective way to reduce the picking cost in a laborintensive distribution center by optimizing the picking route and order batching. By analyzing the characteristics of manual-picking-working and order batching, a new mathematical  model was constructed, taking into consideration of the picking route, picking number and the lead time of the order. Furthermore, the model was solved based on different algorithms including firstcomefirstserve, genetic algorithm, and  improved niche genetic algorithm, and thus to decide the best algorithm with best operation time and optimized effect depending on different order data.

Key words: distribution center, picking batching, order batching, first-come-first-serve, improved niche genetic algorithm