Communications on Applied Mathematics and Computation ›› 2023, Vol. 5 ›› Issue (4): 1564-1583.doi: 10.1007/s42967-022-00218-w

• ORIGINAL PAPERS • Previous Articles     Next Articles

An Efficient Randomized Fixed-Precision Algorithm for Tensor Singular Value Decomposition

Salman Ahmadi-Asl   

  1. Skolkovo Institute of Science and Technology(SKOLTECH), Center for Artificial Intelligence Technology, Moscow, Russia
  • Received:2022-03-30 Revised:2022-07-07 Published:2023-12-16
  • Contact: Salman Ahmadi-Asl,E-mail:s.asl@skoltech.ru E-mail:s.asl@skoltech.ru

Abstract: The existing randomized algorithms need an initial estimation of the tubal rank to compute a tensor singular value decomposition. This paper proposes a new randomized fixed-precision algorithm which for a given third-order tensor and a prescribed approximation error bound, it automatically finds the tubal rank and corresponding low tubal rank approximation. The algorithm is based on the random projection technique and equipped with the power iteration method for achieving better accuracy. We conduct simulations on synthetic and real-world datasets to show the efficiency and performance of the proposed algorithm.

Key words: Tubal tensor decomposition, Randomization, Fixed-precision algorithm

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