基于综合评价指数的城市公交线路选择优化模型

Optimum Selection Model of Urban Public Transportation Route Based on Compound Evaluation Index

为了提高公众出行效率,针对城市公交线路的选择问题,提出了公众出行的任意两站点间公交线路优化选择模型,给出了相应的模型实现算法。通过设置权重因子α,综合考虑换乘车次数、乘车时间和乘车费用3个主要因素,在换乘车次数不超过两次的情况下,将乘车费用和时间融合成一个综合评价指数,建立了线路优化选择模型,并以北京公交的线路选择为实例,得出了直达、一次换乘车和两次换乘车的具体结果。给出α取值为1时的建议性线路,从而验证了模型和算法的合理性和实用性。依据此模型的每次线路选择,都能反映公众出行时需要考虑的3个主要因素,在上述条件下该模型具有一定的通用性。

As for the question of urban public transportation routes selection, the optimum selection model of route between any two stations is put forward for public travels. And the algorithm realization of the model is provided. The proportion factor α is defined. Under the condition of less than two times of transfers, and thinking about the three factors which are times of transfers, time of transfers and cost of running, a compound evaluation index is obtained by syncretizing time and cost. And the optimum selection model is built. A route selection ex- ample of Beijing transportation routes, which computes the results of nonstop, one transfer and two transfers, is given to validate the model and the algorithm. And the suggestion route is gotten when the value of ct is 1. According to this model, every route selection can incarnate the three factors of public traveling and the model can be used under the above conditions.