Operations Research Transactions ›› 2023, Vol. 27 ›› Issue (3): 96-108.doi: 10.15960/j.cnki.issn.1007-6093.2023.03.007

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Two new accelerated proximal gradient algorithms for Toeplitz matrix completion

Chuanlong WANG1,*(), Jianhua NIU1, Qianying SHEN1   

  1. 1. Department of Mathematics, Taiyuan Normal University, Jinzhong 030619, Shanxi, China
  • Received:2021-05-06 Online:2023-09-15 Published:2023-09-14
  • Contact: Chuanlong WANG E-mail:clwang1964@163.com

Abstract:

In this paper, we propose two modified accelerated proximal gradient algorithms for Toeplitz matrix completion in which the iterative matrices keep the Toeplitz structure in each step to decrease SVD times. Furthermore, we prove the convergence of the new algorithms under some reasonal conditions. Finally, numerical experiments show that the new algorithms are much more effective than the accelerated proximal gradient (APG) algorithm for Toeplitz matrix completion in CPU times.

Key words: matrix completion, Toeplitz matrix, accelerated proximal gradient algorithm

CLC Number: