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Feature Selection in Conditional Random Fields for Map Matching of GPS Trajectories

  • Jian YangEmail author
  • Liqiu Meng
Chapter
Part of the Lecture Notes in Geoinformation and Cartography book series (LNGC)

Abstract

Map matching of the GPS trajectory serves the purpose of recovering the original route on a road network from a sequence of noisy GPS observations. It is a fundamental technique to many Location Based Services. However, map matching of a low sampling rate on urban road network is still a challenging task. In this paper, the characteristics of Conditional Random Fields with regard to inducing many contextual features and feature selection are explored for the map matching of the GPS trajectories at a low sampling rate. Experiments on a taxi trajectory dataset show that our method may achieve competitive results along with the success of reducing model complexity for computation-limited applications.

Keywords

Map matching GPS trajectory Conditional random fields Feature selection 

Notes

Acknowledgments

We would like to thank Dr.-Ing Hongchao Fan and Prof. Chun Liu for sharing with us the Shanghai Taxi FCD dataset, and to Oliver Maksymiuk for the helpful discussion. The first author is supported by China Scholarship Council (CSC).

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Lehrstuhl für KartographieTechnische Universität MünchenMunichGermany

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