Association Journal of CSIAM
Supervised by Ministry of Education of PRC
Sponsored by Xi'an Jiaotong University
ISSN 1005-3085  CN 61-1269/O1

Chinese Journal of Engineering Mathematics

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Tensor Completion via Bi-level Optimization Models with the Smooth $\epsilon$-trace Function

NAN Jiakun1,2,  WANG Chuanlong1,2   

  1. 1. School of Mathematics and Statistics, Taiyuan Normal University, Jinzhong 030619
    2. Shanxi Key Laboratory for Intelligent Optimization Computing and Block-chain Technology, Taiyuan Normal University, Jinzhong 030619
  • Received:2023-10-13 Accepted:2024-06-10 Published:2025-06-15
  • Contact: C. Wang. E-mail address: clwang1964@163.com
  • Supported by:
    The National Natural Science Foundation of China (12371381); the Graduate Education Innovation Project of Taiyuan Normal University (SYYJSYC-2316).

Abstract:

In this paper, the novel optimization model for tensor completion by considering the bi-level optimization model with the smooth $\epsilon$-trace functions instead of nuclear norm is proposed. In the new model, it is not necessary to perform singular value decomposition for all modes of the tensor in each iteration, but only two singular value decomposition is needed at most, which effectively reduces the huge computation amount brought by all modes expansion of the tensor and greatly improves the computation efficiency. Finally, the experimental results of randomly generated tensor completion problem and color image inpainting problem show that the proposed bi-level (minimin and minimax combination) optimization models usually has less than CPU time and better precision than the traditional nuclear norm based model.

Key words: tensor completion, bi-level optimization, $\epsilon$-trace function, minimin, minimax

CLC Number: