For the second case on sharing information for collaborative forecasting, known as collaborative planning, forecasting and replenishment (CPRF), usually involves two parties, the manufacturer and the retailer. The collaborating parties would jointly generate a forecast and plan for that forecast. The desired effect would be to make the supply chain more efficient since the forecast is coordinated and carried more information. Yossi [54] studied a two-stage supply chain involving a supplier and a retailer. He created two models,