Vector Field k-Means: Clustering Trajectories by Fitting Multiple Vector Fields
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Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association and Blackwell Publishing Ltd.
Abstract
Scientists study trajectory data to understand trends in movement patterns, such as human mobility for traffic analysis and urban planning. In this paper, we introduce a novel trajectory clustering technique whose central idea is to use vector fields to induce a notion of similarity between trajectories, letting the vector fields themselves define and represent each cluster. We present an efficient algorithm to find a locally optimal clustering of trajectories into vector fields, and demonstrate how vector-field k-means can find patterns missed by previous methods. We present experimental evidence of its effectiveness and efficiency using several datasets, including historical hurricane data, GPS tracks of people and vehicles, and anonymous cellular radio handoffs from a large service provider.
Description
@article{:10.1111/cgf.12107,
journal = {Computer Graphics Forum},
title = {{Vector Field k-Means: Clustering Trajectories by Fitting Multiple Vector Fields}},
author = {Ferreira, Nivan and Klosowski, James T. and Scheidegger, Carlos E. and Silva, Cláudio T.},
year = {2013},
publisher = {The Eurographics Association and Blackwell Publishing Ltd.},
ISSN = {1467-8659},
DOI = {/10.1111/cgf.12107}
}