基于風(fēng)險(xiǎn)厭惡的多市場報(bào)童魯棒優(yōu)化模型與策略研究
[Abstract]:Due to its universality in real economic life, newsboy model has always been a hot spot in supply chain management, especially in the area of inventory management of perishable goods supply chain. In the face of the rapid updating speed of the product and the individual demand of the consumers, the market demand of the short life cycle product is faced with a great deal of uncertainty. When dealing with uncertainty, the traditional research usually assumes that it obeys a certain known distribution and obtains the best decision by optimizing the expected profit or cost. However, empirical research shows that the decision-making taken by decision-makers in practical operation is not always consistent with the optimal strategy based on expected profit or cost-based approach. In the face of uncertain demand, decision makers often present a certain attitude of risk, thus affecting the final decision-making. In addition, with the rapid development of information technology and the increasingly perfect logistics system such as transportation, the service object of an enterprise is no longer limited to a single market, and the integration of multiple markets provides an opportunity for enterprises to obtain more profits. Based on this, this paper studies the multi-market newsboy robust optimization problem with risk aversion under the condition of uncertain demand information. The results will provide decision support for decision makers who sell products or services in multiple markets to deal with the uncertainty of demand. The main contents of this paper are as follows: firstly, a robust newsboy model based on expected profit maximization is established for the probability of discrete demand scenarios belonging to interval and ellipsoidal uncertain sets, respectively. The robust correspondence under uncertain probability of demand scenario is given. Using linear programming and Lagrangian duality theory, the robust corresponding models under interval and ellipsoidal uncertain sets are transformed into linear programming and second-order cone programming problems which are easy to solve. Furthermore, taking the performance described by conditional risk value (CVaR) as the decision-making objective function, the robust newsboy model under two uncertain sets is studied, considering the attitude of decision makers to performance risk aversion caused by uncertainty. Secondly, a robust multi-market newsboy model based on expected profit and conditional risk is established based on the above-mentioned research, considering that the decision maker faces multiple markets at the same time. Considering that the probability of uncertain demand scenario belongs to interval and ellipsoidal uncertain set respectively, the dual theory is used to transform the problem into linear programming and second-order cone programming, which are easy to solve. Finally, numerical calculation and analysis of the model are carried out to verify the effectiveness of the robust strategy obtained by the method in this paper. The results show that, compared with the optimal demand distribution, the proposed robust decision can result in loss of system performance, but the loss value is very small, which shows that the robust strategy based on the method presented in this paper has good robustness. It can effectively restrain the influence of uncertainty of demand distribution on system performance, and the value of performance loss can be interpreted as the maximum cost that the decision maker is willing to pay in order to obtain the real demand distribution information. In addition, the influence of the change of risk aversion degree on the robust decision-making is further analyzed. The results show that with the increase of the risk aversion degree of the decision-maker, the order quantity and system performance tend to decrease.
【學(xué)位授予單位】:東北大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:F274
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