Mobility Information Engineering Lab at ETH Zürich
We had a very interesting and stimulating Workshop on ‘Reproducibility in tracking data analysis and mobility research’ at the ACM SIGSPATIAL 2023 conference in Hamburg. Featuring an excellent keynote by Edzer Pebesma who highlighted the importance of replicability & reproducibility for Spatial Data Science. Check out our website and tutorial materials.
Our new paper entitled “Evaluating geospatial context information for travel mode detection” was accepted at Journal of Transport Geography and is now available (open-access!) online.
How much does geospatial context information contribute to travel mode detection?
Our latest study reveals that geospatial network features, such as distance to the road network, are more critical than motion features, such as speed and acceleration, when classifying an extensive list of travel modes. Still, most land-use and land-cover features barely contribute to the task. The results are based on our extensive context representation reviews and the proposed analytical pipeline to assess the contribution of geospatial context information based on a random forest model and the SHapley Additive exPlanation (SHAP) method.
The study provides valuable guidance for feature selection, effective feature design, and building efficient travel mode detection models.
Check out the paper online and the corresponding code on Github!