قرارداد تامین ظرفیت دو مرحله ای با تامین کننده خطرناک و پیش بینی به روز رسانی

We model this problem using a dynamic programming approach and we exhibit some characteristics of the structure of the optimal inventory control policy for the retailer. More specifically, we provide the structure of the second decision stage optimal policy and some analytical insights concerning the first stage optimal policy. Furthermore, through a numerical study, we analyze the effect of some of the model parameters on the optimal policy such as the information quality, the probability of the availability of the risky supply option, and the difference between the costs of the two supply options.