Analyzing Trajectories Using Uncertainty and Background Information
SSTD '09 Proceedings of the 11th International Symposium on Advances in Spatial and Temporal Databases
Constrained free space diagrams: a tool for trajectory analysis
International Journal of Geographical Information Science
An analytic solution to the alibi query in the space-time prisms model for moving object data
International Journal of Geographical Information Science
Finding long and similar parts of trajectories
Computational Geometry: Theory and Applications
Detecting movement patterns using Brownian bridges
Proceedings of the 20th International Conference on Advances in Geographic Information Systems
Movement similarity assessment using symbolic representation of trajectories
International Journal of Geographical Information Science
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Increasing volumes of trajectory data require analysis methods which go beyond the visual. Methods for computing trajectory analysis typically assume linear interpolation between quasi-regular sampling points. This assumption, however, is often not realistic, and can lead to a meaningless analysis for sparsely and/or irregularly sampled data. We propose to use the space-time prism model instead, allowing to represent the influence of speed on possible trajectories within a volume. We give definitions for the similarity of trajectories in this model and describe algorithms for its computation using the Fréchet and the equal time distance.