Operations Research Transactions ›› 2020, Vol. 24 ›› Issue (2): 23-41.doi: 10.15960/j.cnki.issn.1007-6093.2020.02.003

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Some advances in low-rank matrix optimization

LI Xinrong*, XIU Naihua, LUO Ziyan   

  1. School of Science, Beijing Jiaotong University, Beijing 100044, China
  • Received:2020-04-22 Published:2020-06-13

Abstract: Low-rank matrix optimization is a class of matrix optimization problems with rank minimization or rank constraint. With wide applications ranging from statistics and machine learning, signal and image processing, communication and quantum computing, system identification and control, to economics and finance, low-rank matrix optimization is currently a key research direction in optimization and related fields. However, due to the intrinsic non-convexity and discontinuity in the rank function, low-rank matrix optimization is generally NP-hard. Existing research results in this direction are not very rich, and further research is urgently needed. In this paper, we mainly summarize and review some latest research results on low-rank matrix optimization in theory and in algorithm, along with related important references, so as to dedicate to readers.

Key words: matrix optimization, rank function, low-rank set, theory, algorithm

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