Obayashi Ippei

オオバヤシイッペイ | Obayashi Ippei

Affiliation and department：
Job title： Professor
Homepage URL (1)： https://i-obayashi.info/

Research field (3)： Mathematical analysis , Applied mathematics and statistics , Basic mathematics

Research keywords (4)： Dynamical systems , Applied mathematics , Persistent homology , Topological data analysis

Research theme for competitive and other funds (7)：

2020 - 2025 Comprehensive analysis of hyper-ordered structures based on mathematics and informatics
2019 - 2025 Development of a new method for data science via the fusion of dynamical systems and computational topology
2019 - 2024 Determination of trigger sites for crack formation in aeronautical composite by combining X-ray microscopy and applied mathematics
2019 - 2023 パーシステントホモロジーによる位相高次構造抽出手法開発
2016 - 2020 Analysis of bipedal walking models as a hybrid system from the viewpoint of the basin of attraction

Show all

Papers (53)：

Yasuaki Hiraoka, Ken Nakashima, Ippei Obayashi, Chenguang Xu. Refinement of interval approximations for fully commutative quivers. Japan Journal of Industrial and Applied Mathematics. 2025
Emi Minamitani, Takenobu Nakamura, Ippei Obayashi, Hideyuki Mizuno. Persistent homology elucidates hierarchical structures responsible for mechanical properties in covalent amorphous solids. Nature Communications. 2025. 16. 1
Michiki Taniwaki, Ryunosuke Nagaoka, Ken Masuzawa, Shunsuke Sato, Alexandre Lira Foggiatto, Chiharu Mitsumata, Takahiro Yamazaki, Ippei Obayashi, Yasuaki Hiraoka, Yasuhiko Igarashi, et al. Automated identification of the origin of energy loss in nonoriented electrical steel by feature extended Ginzburg-Landau free energy framework. Scientific Reports. 2025. 15. 23758
Ippei Obayashi, Shinya Miyajima, Kazuaki Tanaka, Koichi Mayumi. Enhanced estimation method for partial scattering functions in contrast variation small-angle neutron scattering via Gaussian process regression with prior knowledge of smoothness. Journal of Applied Crystallography. 2025. 58. 3. 976-991
Misato Tone, Shunsuke Sato, Sotaro Kunii, Ippei Obayashi, Yasuaki Hiraoka, Yui Ogawa, Hirokazu Fukidome, Alexandre Lira Foggiatto, Chiharu Mitsumata, Ryunosuke Nagaoka, et al. Linking structure and process in dendritic growth using persistent homology with energy analysis. Science and Technology of Advanced Materials: Methods. 2025. 5. 1

ｍore...

MISC (16)：

ｍore...

Books (2)：

Lectures and oral presentations (58)：

Applications of Persistent homology to materials science, and persistent homology software HomCloud
(Topological Data Analysis and Industrial Mathematics: Bridging Theory and Applications 2025)
HomCloud: Persistent Homology-Based Data Analysis Software
(TDA Week 2025 2025)
Data analysis framework with linear models and persistent homology
(A*STAR CFAR - JST Presto Joint Workshop 2025)
Basics of Persistent Homology and Optimization Problems on Persistent Homology
(2024)
パーシステントホモロジーによる形のデータサイエンス:アモルファスへの適用例を中心に
(SPring-8ユーザー共同体(不規則系機能性材料研究会) 2024)

ｍore...

Education (3)：

Professional career (1)：

Work history (5)：

2021/04 - 現在 Okayama University Interdisciplinary Education and Research Field (Artificial Intelligence & Mathematical Data Science) Professor
2018/06 - 2021/03 RIKEN RIKEN Center for advanced intelligence Research Scientist
2018/04 - 2018/05 Tohoku University Advanced Institute for Materials Research
2015/04 - 2018/03 Tohoku University Advanced Institute for Materials Research Assistant Professor
2010/04 - 2015/03 Kyoto University Graduate School of Science Postdoctral researcher

Committee career (1)：

Awards (6)：

2020/06 - The Ceramic Society of Japan Award of the Outstanding Papers Published in the JCS-JAPAN in 2019 Understanding diffraction patterns of glassy, liquid and amorphous materials via persistent homology analyses
2020/03 - 理化学研究所第11回桜舞賞研究奨励賞 Development of topological data analysis software and its industrial applications
2017/09 - 日本応用数理学会日本応用数理学会 2017 年度ベストオーサー賞
2017/09 - 日本応用数理学会日本応用数理学会 2017 年度論文賞
2017/09 - 第6回藤原洋数理科学賞奨励賞

Show all

Association Membership(s) (2)：

The Japan Society for Industrial and Applied Mathematics , THE MATHEMATICAL SOCIETY OF JAPAN

※ Researcher’s information displayed in J-GLOBAL is based on the information registered in researchmap. For details, see here.

Return to Previous Page