【摘要】 研究具有模糊需求的车辆路径问题,建立基于模糊可信性理论的模糊机会约束规划模型,提出求解该问题的一种基于随机模拟的混合差分进化算法.同时,在车辆行驶总距离最小的目标下,运用随机模拟方法研究决策者主观偏好值对最终决策目标的影响,并给出最佳主观偏好值.更多还原

【Abstract】 In this paper,the vehicle routing problem with fuzzy demands is considered.A fuzzy chance constrained program model is designed based on fuzzy credibility theory.Stochastic simulation and an improved differential evolution algorithm are integrated to design a hybrid intelligent algorithm to solve the fuzzy vehicle routing model.Moreover,the influence of the decision-maker’s preference on the final objective of the problem is discussed using the method of stochastic simulation,and the rational range of the preference number is obtained.更多还原