A LOSS-AVERSE TWO-PRODUCT ORDERING MODEL WITH INFORMATION UPDATING IN TWO-ECHELON INVENTORY SYSTEM

This paper integrates the prospect theory with two-product ordering problem and adopts Bayesian forecasting model under Brownian motion to propose a loss-averse two-product ordering model with demand information updating in a two-echelon inventory system. We also derive all psychological perceived revenue functions for sixteen supply-demand cases as well as the expected value functions and prospect value function for the loss-averse retailer. To solve this model, a Monte Carlo algorithm is presented to estimate the high dimensional integrals with curved polyhedral integral region of unknown volume. Numerical results show that the optimal order quantities of both high-risk product and low-risk product vary across different psychological reference points, which are also affected by information updating, and the loss{averse retailer benefits considerably from information updating. All results suggest that our model provides a better description of the retailer's actual ordering behavior than existing models.