Hi all, I'm currently playing with the new map matching plugin in OSRM 4.6.0. Great work! It's been really useful for me so far. I also read the corresponding paper by Newson and Krumm and have some questions about the implementation:
- Did you implement all of the described HMM break conditions (route localization, low probability routes, GPS outliers)? After reading the code in OSRM, I was only able to find the "low probability routes" condition. Did I overlook something? - As far as I understand, MAX_DISTANCE_DELTA corresponds to the delta when comparing the route length and great circle distance for the "low probability routes" condition. The paper states a delta of 2000m, the implementation uses a delta of 200m. Feature or bug? - What exactly does the "confidence" return value mean? Thanks! Best, Matthias -- Matthias Schwamborn University of Osnabrück Tel.: +49-541-969-7167 Institute of Computer Science Fax: +49-541-969-2799 Albrechtstr. 28 E-mail: schwamb...@informatik.uos.de D-49076 Osnabrück, Germany http://cs.uos.de/schwamborn/
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