Transshipment Vehicle Routing with Pickup and Delivery for Cross-Filling

Table 1

Notations.

	Item ( = 1, 2, …, K)
	Distribution center ( = 1, 2, …, )
	Order-up-to-level of item at all DCs
	Initial inventory matrix of a day
	Daily demand matrix of a day
	Unit price of item
	Inventory and shortage, respectively, of item at DC before transshipment after assigning on-hand inventory to the daily demand
	Inventory and shortage, respectively, of item at DC after transshipment is completed