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Liu Tianxiang  Liu Tianxiang

Researcher Number 90835216
Other IDs
  • ORCIDhttps://orcid.org/0000-0001-7096-2668
Affiliation (Current) 2025: 東京科学大学, 情報理工学院, 助教
Affiliation (based on the past Project Information) *help 2025: 東京科学大学, 情報理工学院, 助教
2023: 国立研究開発法人理化学研究所, 革新知能統合研究センター, 特別研究員
2021: 国立研究開発法人理化学研究所, 革新知能統合研究センター, 特別研究員
2020: 東京工業大学, 情報理工学院, 助教
2019: 国立研究開発法人理化学研究所, 革新知能統合研究センター, 特別研究員
Review Section/Research Field
Principal Investigator
Basic Section 60020:Mathematical informatics-related
Except Principal Investigator
Basic Section 60020:Mathematical informatics-related
Keywords
Except Principal Investigator
低ランクスパース最適化 / 確率的DCアルゴリズム / ペナルティ法 / ホモトピー法 / 2段階最適化問題 / ランダム行列理論 / 錐最適化問題 / 確率最適化 / 大域収束性 / 最悪反復計算量 / DC最適化 / 機械学習 / 非凸非平滑最適化
  • Research Projects

    (2 results)
  • Research Products

    (6 results)
  • Co-Researchers

    (3 People)
  •  Fast numerical methods for nonconvex nonsmooth problems without global Lipschitz gradients and applications to machine learningPrincipal Investigator

    • Principal Investigator
      Liu Tianxiang
    • Project Period (FY)
      2025 – 2028
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 60020:Mathematical informatics-related
    • Research Institution
      Institute of Science Tokyo
  •  Developing efficient algorithms for nonconvex non smooth optimization and its application to machine learning

    • Principal Investigator
      Takeda Akiko
    • Project Period (FY)
      2019 – 2022
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 60020:Mathematical informatics-related
    • Research Institution
      The University of Tokyo

All 2023 2020 2019

All Journal Article

  • [Journal Article] Doubly majorized algorithm for sparsity-inducing optimization problems with regularizer-compatible constraints2023

    • Author(s)
      Liu Tianxiang、Pong Ting Kei、Takeda Akiko
    • Journal Title

      Computational Optimization and Applications

      Volume: 86 Issue: 2 Pages: 521-553

    • DOI

      10.1007/s10589-023-00503-1

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19H04069, KAKENHI-PROJECT-23K28041
  • [Journal Article] A hybrid penalty method for a class of optimization problems with multiple rank constraints2020

    • Author(s)
      Tianxiang Liu, Ivan Markovsky, Ting Kei Pong, Akiko Takeda
    • Journal Title

      SIAM Journal on Matrix Analysis and Applications

      Volume: 41 Issue: 3 Pages: 1260-1283

    • DOI

      10.1137/19m1269919

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H01699, KAKENHI-PROJECT-19H04069
  • [Journal Article] Data-driven structured noise filtering via common dynamics estimation2020

    • Author(s)
      Ivan Markovsky, Tianxiang Liu, Akiko Takeda
    • Journal Title

      IEEE Transactions on Signal Processing

      Volume: 68 Pages: 3064-3073

    • DOI

      10.1109/tsp.2020.2993676

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H01699, KAKENHI-PROJECT-19H04069
  • [Journal Article] A successive difference-of-convex approximation method for a class of nonconvex nonsmooth optimization problems2019

    • Author(s)
      Tianxiang Liu, Ting Kei Pong, Akiko Takeda
    • Journal Title

      Mathematical Programming

      Volume: 176 Issue: 1-2 Pages: 339-367

    • DOI

      10.1007/s10107-018-1327-8

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19H04069, KAKENHI-PROJECT-15K00031
  • [Journal Article] Subspace methods for multi-channel sum-of-exponentials common dynamics estimation2019

    • Author(s)
      Ivan Markovsky, Tianxiang Liu, Akiko Takeda
    • Journal Title

      2019 IEEE 58th Conference on Decision and Control (CDC)}, Nice, France, 2019, pp. 2672-2675.

      Volume: - Pages: 2672-2675

    • Data Source
      KAKENHI-PROJECT-19H04069
  • [Journal Article] A refined convergence analysis of pDCAe with applications to simultaneous sparse recovery and outlier detection2019

    • Author(s)
      Liu Tianxiang、Pong Ting Kei、Takeda Akiko
    • Journal Title

      Computational Optimization and Applications

      Volume: 73 Issue: 1 Pages: 69-100

    • DOI

      10.1007/s10589-019-00067-z

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15K00031, KAKENHI-PROJECT-19H04069
  • 1.  Takeda Akiko (80361799)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 6 results
  • 2.  ロウレンソ ブルノ・フィゲラ (80778720)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 3.  Metel MichaelRos (40839081)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results

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