Travel mode classification based on <scp>GNSS</scp> trajectories and open geospatial data
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Abstract Accurate travel modes inferred from global navigation satellite system (GNSS) trajectory data can be instrumental to city development, such as travel planning and modeling and traffic flow prediction. With the advancement of mobile sensors, the Internet, and GNSS devices, massive GNSS trajectories have been recorded, laying a foundation for travel mode classification at a fine granular scale. However, the lack of discriminative features reduces the accuracy and robustness of travel mode classification. Thus, in this study, considering the relationship between trajectories and the surrounding transportation environment, a set of discriminative features extracted from geospatial data combined with various GNSS features generated from GNSS trajectories is proposed to better distinguish different travel modes. Based on this, we conduct a systematic comparison of a group of state‐of‐the‐art methods using GeoLife and OpenStreetMap (OSM) data, the results of which will provide guidance for properly selecting models for future travel mode classification‐related work. In addition, the comparison results show that adding GIS‐based domain expert features is robust in improving the classification accuracy of all classifiers in this study.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it