MTC: Multiresolution Tensor Completion from Partial and Coarse Observations
MTC: Multiresolution Tensor Completion from Partial and Coarse Observations
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MTC:部分和粗略观测的多分辨率张量补全
DOI:
10.1145/3447548.3467261
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Sun, Jimeng
中科院分区:
文献类型:
--
作者:
Yang, Chaoqi;Singh, Navjot;Xiao, Cao;Qian, Cheng;Solomonik, Edgar;Sun, Jimeng
Existing tensor completion formulation mostly relies on partial observations from a single tensor. However, tensors extracted from real-world data often are more complex due to: (i) Partial observation: Only a small subset of tensor elements are available. (ii) Coarse observation: Some tensor modes only present coarse and aggregated patterns (e.g., monthly summary instead of daily reports). In this paper, we are given a subset of the tensor and some aggregated/coarse observations (along one or more modes) and seek to recover the original fine-granular tensor with low-rank factorization. We formulate a coupled tensor completion problem and propose an efficient Multi-resolution Tensor Completion model (MTC) to solve the problem. Our MTC model explores tensor mode properties and leverages the hierarchy of resolutions to recursively initialize an optimization setup, and optimizes on the coupled system using alternating least squares. MTC ensures low computational and space complexity. We evaluate our model on two COVID-19 related spatio-temporal tensors. The experiments show that MTC could provide 65.20% and 75.79% percentage of fitness (PoF) in tensor completion with only 5% fine granular observations, which is 27.96% relative improvement over the best baseline. To evaluate the learned low-rank factors, we also design a tensor prediction task for daily and cumulative disease case predictions, where MTC achieves 50% in PoF and 30% relative improvements over the best baseline.
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DOI:
10.1007/978-3-030-47436-2_65
发表时间:
2020-04-17
期刊:
Advances in Knowledge Discovery and Data Mining
影响因子:
--
作者:
Almutairi FM;Kanatsoulis CI;Sidiropoulos ND
通讯作者:
Sidiropoulos ND
DOI:
--
发表时间:
2020-02
期刊:
ArXiv
影响因子:
--
作者:
Jung Yeon Park;K. T. Carr;Stephan Zhang;Yisong Yue;Rose Yu
通讯作者:
Jung Yeon Park;K. T. Carr;Stephan Zhang;Yisong Yue;Rose Yu
DOI:
10.1145/2532169
发表时间:
2014
期刊:
ACM Trans. Knowl. Discov. Data
影响因子:
--
作者:
C. Schifanella;K. Candan;M. Sapino
通讯作者:
M. Sapino
DOI:
10.1137/110855934
发表时间:
2011
期刊:
SIAM J. Sci. Comput.
影响因子:
--
作者:
H. Sterck;Killian Miller
通讯作者:
Killian Miller
影响因子:
7.5
作者:
Almutairi, Faisal M.;Kanatsoulis, Charilaos I.;Sidiropoulos, Nicholas D.
通讯作者:
Sidiropoulos, Nicholas D.