Conference Proceedings

Accelerating online CP decompositions for higher order tensors

S Zhou, NX Vinh, J Bailey, Y Jia, I Davidson

Proceedings of the 22nd ACM SIGKDD International Conference on Knowledge Discovery and Data Mining | Association for Computing Machinery (ACM) | Published : 2016

Abstract

© 2016 ACM. Tensors are a natural representation for multidimensional data. In recent years, CANDECOMP/PARAFAC (CP) decomposition, one of the most popular tools for analyzing multi-way data, has been extensively studied and widely applied. However, today's datasets are often dynamically changing over time. Tracking the CP decomposition for such dynamic tensors is a crucial but challenging task, due to the large scale of the tensor and the velocity of new data arriving. Traditional techniques, such as Alternating Least Squares (ALS), cannot be directly applied to this problem because of their poor scalability in terms of time and memory. Additionally, existing online approaches have only part..

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