针对评价信息存在模糊性、不确定性及不完备性的多方案比选问题,考虑短板指标对各方案综合评价值的影响,引入置信度的概念和变权原理,提出一种新的不确定条件下的变权-优劣势排序(dynamic-weight superiority and inferiority ranking u...针对评价信息存在模糊性、不确定性及不完备性的多方案比选问题,考虑短板指标对各方案综合评价值的影响,引入置信度的概念和变权原理,提出一种新的不确定条件下的变权-优劣势排序(dynamic-weight superiority and inferiority ranking under uncertainty,DWUSIR)方法。利用带置信度结构的语言评价值表达评价信息的不完备性或专家评价的不确定性和模糊性;基于变权原理,通过状态变权函数构造变权模型,兼顾决策者的主观偏好与目标状态值的影响。最后,通过算例分析验证了新提出的方法的有效性和合理性。展开更多
In order to facilitate the scientific management of large-sized shipping companies, fleet planning under complicated circumstances has been studied. Based on multiple influencing factors such as the techno-economic st...In order to facilitate the scientific management of large-sized shipping companies, fleet planning under complicated circumstances has been studied. Based on multiple influencing factors such as the techno-economic status of ships, the investment capacity of company, the possible purchase of new ships, the buying/selling of second-hand vessels and the chartering/renting of ships, a mixed-integer programming model for fleet planning has been established. A large-sized shipping company is utilized to make an empirical study, and Benders decomposition algorithm is employed to test the applicability of the proposed model. The result shows that the model is capable for multi-route, multi-ship and large-scaled fleet planning and thus helpful to support the decision making of large-sized shipping companies.展开更多
文摘针对评价信息存在模糊性、不确定性及不完备性的多方案比选问题,考虑短板指标对各方案综合评价值的影响,引入置信度的概念和变权原理,提出一种新的不确定条件下的变权-优劣势排序(dynamic-weight superiority and inferiority ranking under uncertainty,DWUSIR)方法。利用带置信度结构的语言评价值表达评价信息的不完备性或专家评价的不确定性和模糊性;基于变权原理,通过状态变权函数构造变权模型,兼顾决策者的主观偏好与目标状态值的影响。最后,通过算例分析验证了新提出的方法的有效性和合理性。
基金the Doctoral Programs Foundation ofMinistry of Education of China(No.20102125110002)
文摘In order to facilitate the scientific management of large-sized shipping companies, fleet planning under complicated circumstances has been studied. Based on multiple influencing factors such as the techno-economic status of ships, the investment capacity of company, the possible purchase of new ships, the buying/selling of second-hand vessels and the chartering/renting of ships, a mixed-integer programming model for fleet planning has been established. A large-sized shipping company is utilized to make an empirical study, and Benders decomposition algorithm is employed to test the applicability of the proposed model. The result shows that the model is capable for multi-route, multi-ship and large-scaled fleet planning and thus helpful to support the decision making of large-sized shipping companies.
