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| Time Geography Analysis× | GPS Trajectory Analysis× | |
|---|---|---|
| Fagområde | Human Geography | Human Geography |
| Familie | Process / pipeline | Process / pipeline |
| Oprindelsesår≠ | 1970 | 2015 |
| Ophavsperson≠ | Torsten Hägerstrand | Yu Zheng |
| Type≠ | Framework for representing individual movement and constraints in space and time | Pipeline for turning raw movement traces into structured mobility information |
| Oprindelig kilde≠ | Hägerstrand, T. (1970). What about people in regional science? Papers of the Regional Science Association, 24(1), 6–21. DOI ↗ | Zheng, Y. (2015). Trajectory data mining: an overview. ACM Transactions on Intelligent Systems and Technology, 6(3), 1–41. DOI ↗ |
| Aliasser | Hägerstrand Time Geography, Space-Time Path Analysis, Space-Time Prism Analysis, Time-Space Geography | Trajectory Data Mining, Movement Trajectory Analysis, GPS Trace Analysis, Mobility Trajectory Mining |
| Relaterede | 4 | 4 |
| Resumé≠ | Time geography is a framework, introduced by Torsten Hägerstrand in 1970, that represents human activity as continuous trajectories through a joint space-time coordinate system rather than as static points on a map. Each individual traces a space-time path through the 'space-time aquarium', and the set of all locations that can be reached and returned from within a time budget forms a space-time prism, whose spatial footprint is the potential path area. The framework grounds accessibility and mobility in the inescapable fact that people can be in only one place at a time and that movement consumes both space and time. | GPS trajectory analysis is the pipeline that turns raw streams of timestamped location fixes into structured, meaningful mobility information — the stops where a person dwells, the trips between them, the transport modes used, and the network routes actually travelled. Following the trajectory-data-mining framework synthesized by Yu Zheng in 2015, it cleans noisy positions, segments movement into stays and journeys, snaps points onto road or transit networks, and infers behaviour and recurrent patterns. It is the foundation for activity-space, travel-demand, and mobility studies built on smartphone and vehicle tracking data. |
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