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• W3035958825 abstract "Mining massive spatio-temporal data can help a variety of real-world applications such as city capacity planning, event management, and social network analysis. The tensor representation can be used to capture the correlation between space and time and simultaneously exploit the latent structure of the spatial and temporal patterns in an unsupervised fashion. However, the increasing volume of spatio-temporal data has made it prohibitively expensive to store and analyze using tensor factorization. In this paper, we propose SkeTenSmooth, a novel tensor factorization framework that uses adaptive sampling to compress the tensor in a temporally streaming fashion and preserves the underlying global structure. SkeTenSmooth adaptively samples incoming tensor slices according to the detected data dynamics. Thus, the sketches are more representative and informative of the tensor dynamic patterns. In addition, we propose a robust tensor factorization method that can deal with the sketched tensor and recover the original patterns. Experiments on the New York City Yellow Taxi data show that SkeTenSmooth greatly reduces the memory cost and outperforms random sampling and fixed rate sampling method in terms of retaining the underlying patterns." @default.
• W3035958825 created "2020-06-25" @default.
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• W3035958825 date "2020-06-21" @default.
• W3035958825 modified "2023-10-17" @default.
• W3035958825 title "Spatio-Temporal Tensor Sketching via Adaptive Sampling" @default.
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• W3035958825 doi "https://doi.org/10.48550/arxiv.2006.11943" @default.
• W3035958825 hasPublicationYear "2020" @default.
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