Abstract
The data mining from spatio-temporal trajectories of moving objects has been paid much attention since the last decade and has been considered as one of the new research fields that are attracting great interest. As is known, clustering analysis is one of the most effective tools that are commonly used in data mining. Based on this, in this article, a kernel density estimation based approach is proposed towards the clustering of spatio-temporal trajectories, with the aim to investigate the spatio-temporal clustering of trajectories. In this approach, firstly, the spatio-temporal neighborhood of each trajectory unit is built. Secondly, the trajectory unit sets that are with high densities are extracted in terms of the number of trajectory units their neighborhoods contain. Thirdly, the spatio-temporal kernel density of each trajectory unit is calculated with the Gauss kernel function. What follows next is to search all the density-attracting lines from the extracted trajectory unit sets. Finally, the spatio-temporal clustering of trajectories is executed based on the density-attracting lines, each of which is regarded as the center of a cluster. Last but not least, the feasibility and efficiency of the approach is validated using a real trajectory dataset.
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Zhang, P., Deng, M., Van de Weghe, N. (2014). Clustering Spatio-temporal Trajectories Based on Kernel Density Estimation. In: Murgante, B., et al. Computational Science and Its Applications – ICCSA 2014. ICCSA 2014. Lecture Notes in Computer Science, vol 8579. Springer, Cham. https://doi.org/10.1007/978-3-319-09144-0_21
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DOI: https://doi.org/10.1007/978-3-319-09144-0_21
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