Research On Information Type Selection In Bulk Commodity Purchasing

This paper studies the interaction between the procurement models and the business requirements in a competitive environment.A game-theoretic model which included two stages is constructed in this paper,a monopolist or two companies procure substitutable products in the same procurement market.First of all,a monopolist or two companies select the procurement models singly at the same time;secondly,a monopolist or two companies decide their purchase quantity respectively;At last,two companies carry on a Cournot model in the consumption market.The main research contents of this paper are summarized below:Firstly,we consider an enterprise(monopolist)purchases commodity in the procurement market.The company(monopolist)will face three procurement models which include the demand forecasting(D),the price forecasting(P)and the forecasting of demand and price(B).The traditional idea is that it is beneficial for the company(monopolist)to select the procurement model(B)which is the forecasting of demand and price;In other words,the information which we know more,the result is better.However,is it right?We find that the information of the demand forecasting(price forecasting)is more accurate,the enterprise will be better if he chooses the demand forecasting(price forecasting)model.Not all the way through,the enterprise's profit which selects the procurement model(B)may be under the enterprise's profit which chooses the procurement model(D or P).Secondly,We consider two companies purchases commodity in the procurement market.They will have four kinds of procurement models which include the demand forecasting(DD),the price forecasting(PP),the demand or price forecasting(DP),and the price or demand forecasting(PD).They will decide their procurement quantity respectively,after realized their rival procurement model.In addition,we consider their profits in this case which the accuracy of demand is equal to the accuracy of price;We study that the two companies'result of Nash equilibrium is selecting the demand forecasting(DD)or the price forecasting(PP)simultaneously,when ?=(?_s)/(?_a) is smaller or larger.Finally,this paper also considers their profits in this case which the accuracy of demand isn't equal to the accuracy of price.We study that the two companies'result of Nash equilibrium is different,when correlation coefficient is different.