Method of Arrival and Departure Tracks Utilization Plan in Railroad Passenger Station Based on Ant Colony Algorithm
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摘要: 建立了客运站到发线使用的0-1规划模型,并用蚁群算法求解.用理论最优目标函数值与目标函数值的比值表达信息素,用列车使用到发线权值的倒数表达启发式信息,用2-opt的方法实现局部搜索.为提高解的性能和算法的收敛速度,按所处时段的列车密集程度和对其它列车的影响程度由大到小排序,再按该顺序求解.用哈尔滨站的实际数据验证了提出的方法的有效性.Abstract: A 0-1 programming model for utilization of arrival and departure tracks in a railroad passenger station was proposed,and the model was solved by an ant colony algorithm.In the algorithm,the pheromone is expressed with the ratio of the theoretically optimal objective function value to the actual objective function value,the heuristics information is defined as the reciprocal of weight of trains,and local searches are realized by a 2-opt method.Trains in a station are sorted according to the density of trains in a concerned time period and its influences on other trains to improve the solutions and for quick convergence of the algorithm.Then the sorted train sequence is taken as the order to obtain the solution to the model.The feasibility of the proposed method was verified by data from Harbin railroad passenger station.
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