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A comparison between an origin based method and a nonlinear complementarity based method for solving the traffic assignment problem.

机译:基于原点的方法与基于非线性互补的方法解决交通分配问题的比较。

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摘要

This thesis compares Bar-Gera's Method and Aashtiani's Method for solving the static traffic assignment problem with fixed demand. Specifically, it compares the computational time spent by their corresponding algorithms in thirteen networks based on real cities. It also verifies whether the assumptions made by both methods and the data used allowed such a comparison. To implement Aashtiani's algorithm, a computer code was appropriately designed. To implement Bar-Gera's algorithm, a non-open source application was used. Numerical results showed mixed results but still showed the following trends: (1) Aashtiani's algorithm seems to be faster when solving complex networks, (2) Bar-Gera's algorithm is almost always faster for very high levels of accuracy while Aashtiani's algorithm is faster for lower levels of accuracy, and (3) Bar-Gera's algorithm almost always increases its speed consistently as more accuracy is demanded. Numerical results also showed that for small networks (specifically, when the number of arcs times the number of links is less than 107), both algorithms spent practically no more than one second, rending these networks not recommendable for carrying out future comparisons. As expected, Bar-Gera's method required less memory. This thesis also presents a unified terminology for both methods and adapted Aashtiani's formulation to this specific problem.
机译:本文比较了Bar-Gera方法和Aashtiani方法解决固定需求的静态交通分配问题。具体来说,它比较了基于相应城市的十三种网络中其相应算法所花费的计算时间。它还可以验证两种方法所做的假设以及所使用的数据是否都可以进行这种比较。为了实现Aashtiani的算法,适当设计了计算机代码。为了实现Bar-Gera的算法,使用了非开源应用程序。数值结果显示出混合的结果,但仍显示出以下趋势:(1)解决复杂网络时,Aashtiani算法似乎更快;(2)Bar-Gera算法对于较高的精度几乎总是更快,而对于较低的精度,Aashtiani算法却更快。 (3)Bar-Gera的算法几乎总是随着需要更高的准确性而持续提高其速度。数值结果还表明,对于小型网络(具体来说,当弧数乘以链接数小于107时),两种算法实际上花费的时间都不超过一秒钟,这使这些网络不适合进行未来的比较。不出所料,Bar-Gera的方法需要较少的内存。本文还为这两种方法提供了统一的术语,并针对此特定问题采用了Aashtiani的表述。

著录项

  • 作者

    Olarte, Rafael E.;

  • 作者单位

    University of Maryland, College Park.;

  • 授予单位 University of Maryland, College Park.;
  • 学科 Engineering Civil.;Transportation.
  • 学位 M.S.
  • 年度 2009
  • 页码 124 p.
  • 总页数 124
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;综合运输;
  • 关键词

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