Basic Information

Faculty

• 工学部

Academic Degree

• 修士（理学）(東京理科大学)
• 博士（情報学）(京都大学)

ID,URL

• J-Global ID

  201901009722069970

• Researcher number

  00837354

researchmap URL

• https://researchmap.jp/00837354

Research

Research Interests

• 数理計画法
• 非線形最適化
• 連続最適化
• 最適化理論

Research Areas

• Informatics, Mathematical informatics
• Natural sciences, Applied mathematics and statistics
• Natural sciences, Basic mathematics

Papers

• An equivalent nonlinear optimization model with triangular low-rank factorization for semidefinite programs

  Yuya Yamakawa; Tetsuya Ikegami; Ellen H. Fukuda; Nobuo Yamashita

  Optimization Methods and Software, 10 Jul. 2023

  
• A stabilized sequential quadratic programming method for optimization problems in function spaces

  Yuya Yamakawa

  Numerical Functional Analysis and Optimization, Feb. 2023, Peer-reviewed, Lead author

  
• A revised sequential quadratic semidefinite programming method for nonlinear semidefinite optimization

  Kosuke Okabe; Yuya Yamakawa; Ellen Hidemi Fukuda

  Journal of Industrial and Management Optimization, Jan. 2023, Peer-reviewed

  
• Distributionally Robust Expected Residual Minimization for Stochastic Variational Inequality Problems

  Atsushi Hori; Yuya Yamakawa; Nobuo Yamashita

  Optimization Methods and Software, Jan. 2023, Peer-reviewed

  
• A stabilized sequential quadratic semidefinite programming method for degenerate nonlinear semidefinite programs

  Yuya Yamakawa; Takayuki Okuno

  Computational Optimization and Applications, Aug. 2022, Peer-reviewed, Lead author

  
• Sequential optimality conditions for nonlinear optimization on Riemannian manifolds and a globally convergent augmented Lagrangian method

  Yuya Yamakawa; Hiroyuki Sato

  Computational Optimization and Applications, Jan. 2022, Peer-reviewed, Lead author

  
• A block coordinate descent method for a maximum likelihood estimation problems of mixture distributions

  Yuya Yamakawa; Nobuo Yamashita

  Pacific Journal of Optimization, Oct. 2015, Peer-reviewed, Lead author

  
• A differentiable merit function for shifted perturbed Karush-Kuhn-Tucker conditions of the nonlinear semidefinite programming

  Yuya Yamakawa; Nobuo Yamashita

  Pacific Journal of Optimization, Jul. 2015, Peer-reviewed, Lead author

  
• A two-step primal-dual interior point method for nonlinear semidefinite programming problems and its superlinear convergence

  Yuya Yamakawa

  Journal of Operations Research Society of Japan, 2014, Peer-reviewed, Lead author

  

Misc.

• 非線形SDPに対する主双対内点法の超一次収束性 (最適化の基礎理論と応用)

  山川 雄也; 山下 信雄

  数理解析研究所講究録, Apr. 2014

  
• 2-F-4 非線形SDPに対する2ステップ内点法とその超一次収束性について(連続最適化(3))

  山川 雄也; 山下 信雄

  日本オペレーションズ・リサーチ学会春季研究発表会アブストラクト集, 06 Mar. 2014

  
• 1-A-5 非線形SDPのシフト付き中心化KKT条件に対するメリット関数(連続最適化(1))

  山川 雄也; 山下 信雄

  日本オペレーションズ・リサーチ学会春季研究発表会アブストラクト集, 05 Mar. 2013

  

Industrial Property Rights

• 特許6874770, 特願2018-537185, 降雨量予測装置、降雨量予測方法、および記録媒体

  山川雄也

  
• 特許6819692, 特願2018-546936, シミュレーション装置、シミュレーション方法及びプログラム

  山川雄也

  
• 特許6701839, 特開2017-167690, 特願2016-050383, センサ設置支援装置，データ処理装置，センサ設置支援方法及びプログラム

  山川雄也

  

External funds: Kakenhi

• 非線形半正定値計画問題に対する高速かつ効率的手法の開発

  Grant-in-Aid for Early-Career Scientists

  Basic Section 60020:Mathematical informatics-related

  Kyoto University

  山川 雄也

  From 01 Apr. 2021, To 31 Mar. 2026, Granted

  非線形半正定値計画問題;逐次二次半正定値計画法;制約想定;点列最適性条件;下三角低ランク行列分解;最適化手法

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21K17709/
• Explicit dual formulations of continuous optimization problems and their applications

  Grant-in-Aid for Scientific Research (C)

  Basic Section 60020:Mathematical informatics-related

  Kyoto University

  山下 信雄

  From 01 Apr. 2021, To 31 Mar. 2025, Granted

  双対問題;非線形半正定値計画;連続最適化

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21K11769/

Education

Teaching subject(s)

• From 01 Apr. 2023, To 31 Mar. 2024

  Seminar on Applied Mathematics and Physics

  9074, Fall, Faculty of Engineering, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Applied Mathematics and Physics Laboratory

  9089, Fall, Faculty of Engineering, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Applied Mathematics and Physics Laboratory

  9125, Fall, Faculty of Engineering, 4
• From 01 Apr. 2022, To 31 Mar. 2023

  Applied Mathematics and Physics Laboratory

  9125, Fall, Faculty of Engineering, 4
• From 01 Apr. 2022, To 31 Mar. 2023

  Applied Mathematics and Physics Laboratory

  9089, Fall, Faculty of Engineering, 2
• From Apr. 2020, To Mar. 2021

  Seminar on Applied Mathematics and Physics

  Fall, 工学部
• From Apr. 2021, To Mar. 2022

  Applied Mathematics and Physics Laboratory

  Fall, 工学部
• From Apr. 2021, To Mar. 2022

  Applied Mathematics and Physics Laboratory

  Fall, 工学部
• From Apr. 2021, To Mar. 2022

  Seminar on Applied Mathematics and Physics

  Fall, 工学部

Administration

Faculty management (title, position)

• From 01 Apr. 2021, To 31 Mar. 2023

  図書WG委員
• From 01 Apr. 2021, To 31 Mar. 2022

  図書WG委員（兼任　工学部数理コース）