論文

• Mitsuhiro Nishijima, Kazuhide Nakata. Generalizations of doubly nonnegative cones and their comparison, Journal of the Operations Research Society of Japan, Vol. 67, Issue 3, 84-109, Aug. 2024.
• Mitsuhiro Nishijima, Kazuhide Nakata. Approximation Hierarchies for Copositive Cone over Symmetric Cone and Their Comparison, Journal of Global Optimization, online, July 2023.  公式リンク  
  
• Mitsuhiro Nishijima, Kazuhide Nakata. A Block Coordinate Descent Method for Sensor Network Localization, Optimization Letters, to appear, June 2021.

国際会議発表 (査読なし・不明)

• Mitsuhiro Nishijima, Kazuhide Nakata. Approximation Hierarchies for Copositive Cone over Symmetric Cone, 10th International Congress on Industrial and Applied Mathematics, Aug. 2023.
• Mitsuhiro Nishijima, Kazuhide Nakata. Approximation Hierarchies for Copositive Cone over Symmetric Cone and Their Comparison, SIAM Conference on Optimization, May 2023.
• Mitsuhiro Nishijima, Kazuhide Nakata. Approximation Hierarchies for Copositive Cone over Symmetric Cone and Their Comparison, International Workshop on Continuous Optimization Online, Dec. 2022.
• Mitsuhiro Nishijima, Kazuhide Nakata. Generalization of Doubly Nonnegative Cone: Focusing on Inner-Approximation for Generalized Copositive Cone, 2022 INFORMS Annual Meeting, Oct. 2022.
• Mitsuhiro Nishijima, Kazuhide Nakata. A Block Coordinate Descent Method for Sensor Network Localization, The SIAM Conference on Optimization (OP21), July 2021.

国内会議発表 (査読なし・不明)

• 西島光洋, 中田和秀. 対称錐上の共正値錐に対する近似階層とその比較, 最適化：モデリングとアルゴリズム, Mar. 2023.
• 西島光洋, 中田和秀. 対称錐上の共正値錐に対する近似階層とその比較, 日本オペレーションズ・リサーチ学会2023年春季研究発表会, 日本オペレーションズ・リサーチ学会2023年春季研究発表会アブストラクト集, Mar. 2023.
• 西島光洋, 中田和秀. 一般化共正値錐に対する内側近似階層から着想を得た一般化二重非負錐の提案、, 統計数理研究所共同研究集会 研究集会「最適化：モデリングとアルゴリズム」、, Mar. 2022.
• 西島光洋, 劉穎, 中田和秀. 日本語学習者コーパスI-JASを用いた母語識別, 言語処理学会第27回年次大会(NLP2021), Mar. 2021.

学位論文

• Completely Positive and Copositive Cones over Symmetric Cones: Approximations and Facial Structure,  Thesis,  Tokyo Institute of Technology, 
• Completely Positive and Copositive Cones over Symmetric Cones: Approximations and Facial Structure,  Summary,  Tokyo Institute of Technology, 

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