Representing positional uncertainty of individual and aggregated trajectories of moving objects
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García, M. and Ivanova, I. and Dilo, A. and Morales, J. 2013. Representing positional uncertainty of individual and aggregated trajectories of moving objects, SIGSPATIAL'13, 21st ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, pp. 426-429.
GIS: Proceedings of the ACM International Symposium on Advances in Geographic Information Systems
SIGSPATIAL'13, 21st ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
School of Earth and Planetary Sciences (EPS)
Trajectories are used to represent objects' movement and spatio-temporal aggregation of trajectories is commonly used in knowledge discovery. Based on a general workflow to extract knowledge, we identify relevant factors that propagate uncertainty in moving object datasets when using aggregation. We use a probabilistic approach and propose a theoretical model to represent positional uncertainty of trajectories and their aggregation, and implement a prototype system to compute positional uncertainty in pedestrians' movement data. © 2013 Authors.
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