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微观模型和宏观模型可以无缝连接吗?

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发表于 2008-9-25 16:18:56 | 显示全部楼层 |阅读模式
http://www.chinautc.com/bbs/dispbbs.asp?boardID=49&ID=8634&page=1英国高速公路局关于微观模型和宏观模型结合使用的建议:







2.6.2       It is considered that micro-simulation should be used in conjunction with higher tier macro- models, but mainly as an operational assessment tool to provide traffic data to the higher tier model. There have been attempts to directly link micro-simulation with macro-models in order to pass data directly between them in an iterative process to reach convergence. However due to the different methodologies (e.g. assignment procedures) used in the deriving the model outputs this has been of limited success and has proved to be time consuming and costly. In view of this, it is not recommended that convergence between micro and macro models should be attempted.

     


Guidelines for the Use of Microsimulation Software, Highways Agency, 2007





微观仿真软件使用指导方针, 英国高速公路局2007 微观和宏观仿真的连接—译文译文大致如下(如有理解和用词不当,敬请指正):
   







“有观点认为微观仿真应该和高一级的宏观模型结合使用,但应主要是作为运行评估手段为高一级的模型提供交通数据。已经有不少尝试把微观仿真和宏观仿真模型直接相连,目的是在二者之间用迭代过程直接传递数据来实现收敛。但是,由于二者使用的方法论的不同(例如,交通分配方法),在进行模型输出结果推导时,这种尝试很少能够成功;并且已经证明这既费时又费钱。基于以上原因,我们不建议尝试用微观和宏观模型结合的方式以实现收敛。”     







——《微观仿真软件使用指导方针》,英国高速公路局,2007







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