Modeling and comparing change using spatiotemporal helixes
GIS '03 Proceedings of the 11th ACM international symposium on Advances in geographic information systems
STRG-Index: spatio-temporal region graph indexing for large video databases
Proceedings of the 2005 ACM SIGMOD international conference on Management of data
Modeling and comparing spatiotemporal events
dg.o '04 Proceedings of the 2004 annual national conference on Digital government research
The Concentration of Fractional Distances
IEEE Transactions on Knowledge and Data Engineering
Searching for similar trajectories in spatial networks
Journal of Systems and Software
Joint trajectory tracking and recognition based on bi-directional nonlinear learning
Image and Vision Computing
Migration motif: a spatial - temporal pattern mining approach for financial markets
Proceedings of the 15th ACM SIGKDD international conference on Knowledge discovery and data mining
TransDB: GPS data management with applications in collective transport
Proceedings of the 5th Annual International Conference on Mobile and Ubiquitous Systems: Computing, Networking, and Services
Finding long and similar parts of trajectories
Proceedings of the 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
Proceedings of the 5th French-Speaking Conference on Mobility and Ubiquity Computing
Spatio-temporal similarity measure algorithm for moving objects on spatial networks
ICCSA'07 Proceedings of the 2007 international conference on Computational science and its applications - Volume Part III
Efficient RkNN retrieval with arbitrary non-metric similarity measures
Proceedings of the VLDB Endowment
Efficient reverse skyline retrieval with arbitrary non-metric similarity measures
Proceedings of the 14th International Conference on Extending Database Technology
Trajectory similarity of network constrained moving objects and applications to traffic security
PAISI'10 Proceedings of the 2010 Pacific Asia conference on Intelligence and Security Informatics
Searching for similar trajectories on road networks using spatio-temporal similarity
ADBIS'06 Proceedings of the 10th East European conference on Advances in Databases and Information Systems
Spatio-temporal similarity analysis between trajectories on road networks
ER'05 Proceedings of the 24th international conference on Perspectives in Conceptual Modeling
Similarity in (spatial, temporal and) spatio-temporal datasets
Proceedings of the 15th International Conference on Extending Database Technology
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We investigate techniques for similarity analysis of spatio-temporal trajectories for mobile objects. Such kind of data may contain a great amount of outliers, which degrades the performance of Euclidean and Time Warping Distance. Therefore, here we propose the use of non-metric distance functions based on the Longest Common Subsequence (LCSS), in conjunction with a sigmoidal matching function. Finally, we compare these new methods to various Lp Norms and also to Time Warping distance (for real and synthetic data) and we present experimental results that validate the accuracy and efficiency of our approach, especially under the strong presence of noise.