Mathematical optimization, Machine Learning

Preprint

[P21] Akira Kitaoka, Explicit Iteration Complexity of Exact Data-Driven Inverse Optimization for Integer Linear Programs, preprint. [arXiv:2607.22263]

[P13] Akira Kitaoka, Inverse Mixed-Integer Programming: Learning Constraints then Objective Functions, preprint. [arXiv:2510.04455]

[P8] Akira Kitaoka, Exact Solution to Data-Driven Inverse Optimization of MILPs in Finite Time via Gradient-Based Methods, preprint. [arXiv:2405.14273]

[P6] Akira Kitaoka, Riki Eto, A proof of imitation of Wasserstein inverse reinforcement learning for multi-objective optimization, preprint. [arXiv:2305.10089]

[P5] Akira Kitaoka, Riki Eto, A proof of convergence of inverse reinforcement learning for multi-objective optimization, preprint. [arXiv:2305.06137]

Peer reviewed

[P19] Ryuta Matsuno, Akira Kitaoka, Learning from Two-Sample Averaged Data, ICDM 2025, November 12, 2025. [Paper] [Video presentation]

Non-refereed

[P20] Akira Kitaoka, Inverse Mixed-Integer Programming: Learning of Constraints then Objective Functions (Japanese), JSAI2026, [5H2-OS-18a], June 12, 2026. [Paper]

[P12] Ryuta Matsuno, Akira Kitaoka, Keita Sakuma, Masakazu Hirokawa, Learning Nonlinear Regression Model from Two-Sample Averaged Data (Japanese), JSAI2025, [2L4-GS-1-05], May 28, 2025. [Paper]

[P11] Akira Kitaoka, Yuzuru Okajima, Yoichi Sasaki, Rin Takano, Counterfactual Explanation Based on Paths via Curve Energy Minimization (Japanese), JSAI2025, [1Win4-97], May 27, 2025. [Paper] [Errata & Comment]

[P9] Akira Kitaoka, Riki Eto, Equivalence of Suboptimality Loss and Prediction Loss in Inverse Problems of Mixed Integer Linear Programming (Japanese), JSAI2024, Hamamatsu, May 28, 2024.

Mathematics

Preprint

[P10] Akira Kitaoka, Minimization of curve length through energy minimization using finite difference and numerical integration in real coordinate space, preprint. [arXiv:2504.15566]

Peer reviewed

[P4] Akira Kitaoka, Harmonic forms and the Rumin complex on Sasakian manifolds, Osaka Journal of Mathematics, to appear. [arXiv:2204.03446]

[P3] Akira Kitaoka, Ray-Singer Torsion and the Rumin Laplacian on lens spaces, Symmetry, Integrability and Geometry: Methods and Applications (SIGMA) 18 (2022), 091, 16 pages. [article link][arXiv:2009.03276]

[P1] Akira Kitaoka, Analytic torsions associated with the Rumin complex on contact spheres, International Journal of Mathematics 31 (2020), no. 13, 2050112. [article link] [arXiv:1911.03092]

Non-refereed

[P7] Akira Kitaoka, Ray-Singer torsion and the Rumin Laplacian on lens spaces, Geometric Structures and Differential Equations - Symmetry, Singularity, and Quantization - , online, Nov 2023. Proceedings

[P2] Akira Kitaoka, Behavior prediction with purchasing data (Japanese), Suurikagaku Jissenkenkyu Letter 2021, LMSR 2021-1, August 23, 2021.