交通运输系统工程与信息 ›› 2009, Vol. 9 ›› Issue (5): 141-147 .

• 系统工程理论与方法 • 上一篇    下一篇

大规模交通网络实时路径搜索算法研究

李树彬1,2 ;高自友*1 ;林勇2 ;吴建军1 ;李珂2 ;许兆霞2 ;丁青燕1   

  1. 1北京交通大学 交通运输学院,北京 100044; 2山东省科学院 自动化研究所,济南 250014
  • 收稿日期:2009-05-07 修回日期:2009-07-13 出版日期:2009-10-25 发布日期:2009-10-25
  • 通讯作者: 高自友
  • 作者简介:李树彬(1977-),男,山东人,博士生,助理研究员.
  • 基金资助:

    国家重点基础研究发展计划(973计划)(2006CB705500) ;国家自然科学基金(70801005,70871099);公安部应用创新计划项目(2007YYCXSDST057);山东省自然科学基金(Y2008F14);山东省科学院博士基金项目(鲁科院字[2008]102号).

Real-Time Path Searching Algorithm for Large Traffic Network

LI Shu-bin 1,2; GAO Zi-you 1;LIN Yong 2; WU Jian-jun 1; LI Ke2;XU Zhao-xia2; DING Qing-yan1   

  1. 1 School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China)
    (2 Institute of Automation, Shandong Academy of Sciences, Jinan 250014, China
  • Received:2009-05-07 Revised:2009-07-13 Online:2009-10-25 Published:2009-10-25
  • Contact: GAO Zi-you

摘要: 对在研的DynaCHINA软件中大规模交通网络下的实时路径搜索问题进行了研究。提出了新的设计思想,给出了有效路径的产生算法,并设计了支持海量路径数据的存储及高效检索的数据结构。算法充分利用路径的递归特性,降低问题的规模,实现了较小空间花费下的海量路径随机查询。大大提高了大规模交通网络中实时路径搜索问题的计算速度,节省了计算机存储资源。通过与原有算法比较表明,本算法能够在较小的计算机存储资源下,快速有效的处理大规模交通网络中的实时路径搜索问题,具有广阔的应用前景和现实意义。

关键词: 大规模交通网络, 实时, 路径搜索, 递归算法, 动态中国

Abstract: In this paper, the real-time path searching problem for the larger traffic network is investigated in the developing software—DynaCHINA, and an effective path generation algorithm is proposed. Additionally, a new data structure is provided to store large count of paths and support high performance searching. By the recursive property, the new algorithm can reduce the size of problem which derives the paths with a small space required. As a result, it improves the computing speed greatly in real-time path searching and saves the computer memory resource significantly. Compared with original algorithms, it is found that the proposed algorithm deals with the real-time path searching problem in large traffic network quickly and effectively with a small computer memory. Therefore, the algorithm can be used in practical traffic management.

Key words: large traffic network, real-time;path searching, recursive algorithm, DynaCHINA

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