Computer and Modernization ›› 2021, Vol. 0 ›› Issue (11): 82-88.

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Dynamic Optimal Path Planning Based on Trajectory Big Data

  

  1. (College of Mathematics and Statistics, Northwest Normal University, Lanzhou 730070, China)
  • Online:2021-12-13 Published:2021-12-13

Abstract: Based on trajectory big data, combined with urban traffic status and user personalized needs, a dynamic optimal path planning algorithm is proposed based on improved Viterbi algorithm. First, a traffic network model based on directed complex network with multi-weights is constructed by combining the traffic state with the real road network topology. The multi-weight attributes of the transportation network model are assigned by using the comprehensive weighting method based on the coalition of the analytic hierarchy process and the entropy weight method. Then, a new directed weighted complex network model is obtained. Further, the optimal path is solved by the improved Viterbi algorithm. Finally, taking Lanzhou as an example to analyze the optimal path planning, the effectiveness of the urban optimal path planning algorithm is verified by comparing the proposed algorithm with the static planning method. The experimental results show that path planning that combines urban traffic conditions with user preferences is more scientific and reasonable, and can provide decision-making support and reference for drivers and traffic management departments.

Key words: dynamic path planning, comprehensive weighting method, Viterbi algorithm, GPS trajectory big data, directed complex network with multi-weights