The online order fulfillment of online-to-offline (O2O) supermarket faces the challenge in how to pick orders from thousands of products on the supermarket shelves and deliver them to customers in different zones and locations by a vehicle routing method within the lowest cost and shortest time. It is critical to integrate the order picking and delivery processes and schedule them jointly with a coordinated manner. Thus, in this paper, we study the online integrated order picking and delivery problem with multizone routing method (IOPDP-MR) to minimize both the maximum delivery completion time...
