Comment on “Simultaneous determination of multiproduct batch and full truckload shipment schedules”

This paper revisits the formula in “Simultaneous determination of multiproduct batch and full truckload shipment schedules” by Banerjee (2009). An amendment to the constraint formula is recommended to deliver a more accurate representation to the considered problem. In addition, a new constraint is introduced to make the formula for computing the average inventory applicable. Unfortunately, the constraint leads the manufacturer to adopt a lot-for-lot delivery policy, particularly when the resource utilization is fairly high. Therefore, in this paper, the constraint is relaxed and a new model for formulating the average inventory and the total cost is developed. A numerical example is provided to evaluate the performance of the proposed model.