Dong, Xiaowen
Ortega, Antonio
Frossard, Pascal
Vandergheynst, Pierre
Inference of Mobility Patterns via Spectral Graph Wavelets
Proceedings of ICASSP
Proceedings of ICASSP
Proceedings of ICASSP
Proceedings of ICASSP
signals on graphs
spectral graph wavelets
mobility patterns
classification
Flickr
2013
2013
Modern data processing tasks frequently involve structured data, for example signals defined on the vertex set of a weighted graph. In this paper, we address the problem of inference of mobility patterns from data defined on geographical graphs based on spatially localized events. Specifically, we propose a model-based approach where we build a signal model for each of the expected mobility patterns. We then analyze the characteristics of the signal models by studying their spectral representations using wavelets defined on graphs, which enables us to build efficient classifier in the spectral domain. Experiments on data gathered from photo-taking events in Flickr show that we can efficiently infer mobility patterns using only coarse aggregated information, which is certainly interesting in terms of privacy protection.
Proceedings of ICASSP
Conference Papers
000329611503056