Research on Three-level Emergency Material Scheduling Considering Demand Urgency Difference and Fair Distribution
Each disaster site has its own disaster situation,which leads to great differences in the demand urgency of different types of materials in each disaster site.The model that ignores this reality,will lead to some problems,such as unfair distribution of limited emergency materials and high costs.Firstly,compared with the existing literatures,the CRITIC method was introduced to measure the volatility and conflict of demand for limited supplies at each disaster site,and a demand urgency measurement method was proposed.Secondly,the minimax function was used to improve the fairness objective of the existing research.Thirdly,in view of the reality of long-distance transportation,the three-level structure was adopted for reserve points,transfer stations and disaster sites.Then,a new multi-objective mixed integer programming model was established in order to minimize the maximum material shortage degree of each disaster site and the total cost.Finally,the model was transformed by fuzzy theory and solved by the improved adaptive priority-based genetic algorithm(IAPGA).Experiment results indicate that the model can effectively control the cost and ensure the fairness distribution among all disaster sites,which can provide effective decision support for the emergency material scheduling problem.
limited materialdemand urgency differencefair distributionemergency material scheduling
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