Hirokazu Shimauchi ( 島内 宏和 )
Associate Professor, Department of Complex and Intelligent Systems, School of Systems Information Science, Future University Hakodate
Ph.D. in Information Sciences, Tohoku University, Japan, 2015
Artificial Intelligence
Complex Dynamical Systems
Loewner Theory
Machine Learning
Numerical Quasiconformal Mapping
Associate Professor, Department of Complex and Intelligent Systems, School of Systems Information Science, Future University Hakodate, 2024.09-
Associate Professor, Department of Engineering, Faculty of Engineering, Hachinohe Institute of Technology, 2022.04-2024.08
Senior Assistant Professor, Department of System and Information Engineering, Faculty of Engineering , Hachinohe Institute of Technology, 2020.04-2022.03
Research Fellow, School of Science, Tokyo Institute of Technology, 2016.06-2020.03.
Data Scientist, Policy Data Lab, Tokyo Foundation for Policy Research, 2018.09-2020.03,
Assistant Professor, Department of Human Sciences and Cultural Studies, Yamanashi Eiwa College, 2015.04-2018.08.
Programmstudent of University of Würzburg (Germany), 2013.08.02-29.
IIARE Doctoral course student, Institute for International Advanced Research and Education, Tohoku University, 2012-2015.
JSSO Student Exchange Support Program (Scholarship For Short-Term Visit), POSTECH (Korea), 2012.03.05-20.
Research Assistant at RIKEN, Center for Advanced Photonics, Terahertz wave Research Group, Terahertz Sensing & Imaging Research Team, 2009.12-2012.07.
日本数学会 雑誌「数学」編集委員, 2022.7-
Program committee, 14th International Conference on Emerging Networks and Systems Intelligence (Valencia, Spain), 2022.4-2022.11.
Technical Committee, 5th International Conference on Information Science and Systems (Beijing, China), 2021.11-2022.4.
Session Chair (Neural Networks Session) , 14th International Conference on Agents and Artificial Intelligence (Vienna, Austria, Online), 2022.2.
Program committee, 13th International Conference on Emerging Networks and Systems Intelligence (Barcelona, Spain), 2021.4-2022.3.
Technical Committee, 4th International Conference on Information Science and Systems (Edinburgh, United Kingdom), 2020.7-2021.3.
Technical Committee, 3rd International Conference on Information Science and Systems (Cambridge, United Kingdom), 2019.12-2020.3.
Organizer, 51th Summer Seminar on Function Theory (Kofu, Japan), 2016.9.
Chair, 9th International Symposium on Geometric Function Theory and Applications (Istanbul, Turkey), 2013.8.
Grant-in-Aid for Challenging Research (Exploratory), Co-Investigator, No. 22K18672, 2022.6-2025.3
Grant-in-Aid for Scientific Research (C), Principal Investigator, No. 22K12050, 2022.4-2025.3
Grant-in-Aid for Research Activity start-up, Principal Investigator, No. 20K23330, 2020.9-2022.3
Grant-in-Aid for Young Scientists (B), Principal Investigator, No. 16K16061, 2016.4-2018.3
Grant-in-Aid for Scientific Research (B), Co-Investigator, No. 25287015, 2016.04-2017.03
Funds for IIARE Doctoral course student, Institute for International Advanced Research and Education, Tohoku University, 2012.6-2015.3.
Book
東北大学学際科学フロンティア研究所『百科繚覧』編集委員会 編 (分担執筆), 『百科繚覧 Vol.1』, 東北大学出版会 (2019).
Refereed papers
H. Shimauchi, Quasiconformal Extension-Based Unsupervised Representation Learning and Application to Semi-supervised Outlier detection, accepted at Studies in Computational Intelligence, Springer (2025).
Y. Kakizaki, Y. Sakai, H. Shimauchi, Reponses to tweets from physicians, experts, and governors during Covid-19 pandemic: Ananalysis using BERT, The Bulletin of Hachinohe Institute of Technology 42, 16-26 (2023).
S. Kato, T. Nakanishi, B. Ahsan, H. Shimauchi, Time-series topic analysis using singular spectrum transformation for detecting political business cycles, Journal of Cloud Computing, 10(1) (2021).
H. Shimauchi, Considerations Regarding the Secondary Use of Data in Psychology by Machine Learning: In a Case of Knowledge Discovery Regarding ASD from CCC-2 Data, Considerations Regarding the Secondary Use of Data in Psychology by Machine Learning: In a Case of Knowledge Discovery Regarding ASD from CCC-2 Data, Japnese Journal of Communication Disorders, 37 (2), 127-132 (2020).
H. Shimauchi, "Taylor coefficients of the conformal map for the exterior of the reciprocal of the multibrot set", Interdisciplinary Information Sciences, 25(1), 33-44 (2019).
I. Hotta and H. Shimauchi, "On a numerical algorithm for the solution of the radial Loewner equation", Mathematical Methods in the Applied Sciences, 41 (2), 714-723 (2018).
R. M. Porter and H. Shimauchi, "Numerical solution of the Beltrami equation via a purely linear system", Constructive Approximation, 43(3), 371-407 (2016).
H. Shimauchi, "A remark on Zagier's observation of the Mandelbrot set", Osaka Journal of Mathematics, Volume 52, Number 3, 737-747 (2015).
H. Shimauchi, "On the coefficients of the Riemann mapping function for the exterior of the Multibrot set", Topics in Finite or Infinite Dimensional Complex Analysis, Tohoku University Press, 237-248 (2013).
Peer-reviewed proceedings
H. SHimauchi, Unsupervised Representation Learning by Quasiconformal Extension, accepted at Proceedings of the 15th International Joint Conference on Computational Intelligence (IJCCI 2023): Neural Computation Theory and Applications (NCTA 2023), (2023).
H. Shimauchi, An Activation Function with Probabilistic Beltrami Coefficient for Deep Learning, In Proceedings of the 14th International Conference on Agents and Artificial Intelligence (Vienna, Austria, Online), Vol. 3, 613-620 (2022).
H. Shimauchi, S. Takase, Tsunami Forecasting from Sparse Observations by Semi-Supervised Outlier Detection with Generative Adversarial Network, Presented at 15th World Congress on Computational Mechanics & the 8th Asian Pacific Congress on Computational Mechanics (2022).
H. Shimauchi, Improving Supervised Outlier Detection by Unsupervised Representation Learning and Generative Adversarial Networks, Accepted at Proceedings of ICISS ’21 (Edinburgh, UK, Online), ACM, New York, NY, USA (2021).
H. Shimauchi, N. Tsukidate, K. Hishiyama, M. Oi, Y. Yoshimura, M. Kikuchi and C. Hasegawa, "Discovering Knowledge of ASD from CCC-2: Ensemble Learning Approach for Analysis of ASD", In Proceedings of ICISS '20 (Cambridge, UK, Online). ACM, New York, USA (2020).
S. Kato, T. Nakanishi, H. Shimauchi, B. Ahsan, Topic Variation Detection Method for Detecting Political Business Cycles, In Proceedings of IEEE/ACM BDCAT '19 (Auckland, NZ), ACM, New York, NY, USA, 85-93 (2019).
R. M. Porter and H. Shimauchi, "A numerical algorithm for solving the Beltrami equation", AIP Conference Proceedings, 1648, 440006 (2015).
Other papers
島内宏和, "擬等角写像の数値的構成法と機械学習への応用", 電子情報通信学会 基礎・境界ソサイエティ Fundamentals Review 19.2 (2025): 97-104.
K. Hasegawa, H. Shimauchi, Y. Takeyama, A Consideration for using Tweets referred to Hachinohe as a Social Sensor (in Japanese), The Bulletin of Hachinohe Institute of Technology, 40, 86 - 92 (2021).
B. Ahsan, S. Kato, T. Nakanishi, H. Shimauchi, Augmenting Political Data through Generative Adversarial Networks (GANs), Paper presented at the 115th American Political Science Association's Annual Meeting (2019).
S. Kato, H. Shimauchi, T. Nakanishi, B. Ahsan, Detecting Political Business Cycles through the Prime Minister’s Daily Schedule, Paper presented at the 77th Annual Meeting of the Midwest Political Science Association (2019).
H. Shimauchi, "ON THE COEFFICIENTS OF THE RIEMANN MAPPING FUNCTION FOR THE EXTERIOR OF THE MANDELBROT SET (Integrated Research on Complex Dynamics)", RIMS Kôkyûroku 1807 (2012), 21-30.
H. Shimauchi, "ON THE COEFFICIENTS OF THE RIEMANN MAPPING FUNCTION FOR THE COMPLEMENT OF THE MANDELBROT SET (Conditions for Univalency of Functions and Applications)", RIMS Kôkyûroku 1772 (2011), 109-113.
島内宏和, 擬等角写像とその応用：数値的構成手法と機械学習への応用, 電子情報通信学会スマートインフォメディアシステム研究会, 2022.
H. Shimauchi, An arithmetic property of the coefficients of the Riemann map for the exterior of the reciprocal of the Mandelbrot set, 2020年度「リーマン面・不連続群論」研究集会, 2021.
島内 宏和, 区分線形写像とconformal weldingによる擬等角写像の近似, 第63回 函数論シンポジウム, オンライン, 2020.
H. Shimauchi, N. Tsukidate, K. Hishiyama, M. Oi, Y. Yoshimura, M. Kikuchi and C. Hasegawa, "Discovering Knowledge of ASD from CCC-2: Ensemble Learning Approach for Analysis of ASD", the 3rd International Conference on Information Science and Systems (ICISS 2020), Cambridge University, UK (2020).
S. Kato, T. Nakanishi, H. Shimauchi, B. Ahsan, Topic Variation Detection Method for Detecting Political Business Cycles, 6th IEEE/ACM International Conference on Big Data Computing, Applications and Technologies (BDCAT '19), 2019.12.4.
B. Ahsan, S. Kato, T. Nakanishi, H. Shimauchi, Augmenting Political Data through Generative Adversarial Networks (GANs), 115th American Political Science Association's Annual Meeting, 2019.8.29.
S. Kato, H. Shimauchi, T. Nakanishi and B. Ahsan, Detecting Political Business Cycles through the Prime Minister’s Daily Schedule, 77th Annual Meeting of the Midwest Political Science Association, 2019.4.4.
菱山完, 槻舘尚武, 大井学, 島内宏和, CCC-2を用いたSVMによるASDの分類, 電子情報通信学会総合大会ISS特別企画「学生ポスターセッション」ISS-P-052, 2018.3.21.
"Visualizing the solution of the radial Loewner equation", the International Conference on Computational Methods and Function Theory 2017, Maria Curie-Skłodowska University, Lublin, Poland, 2017.07.19.
"A numerical algorithm for solving the Loewner equation", The 25th International Conference on Finite or Infinite Dimensional Complex Analysis and Applications, The University of Hong Kong (Hong Kong), 2017.06.27.
"Numerical solution of the radial Loewner equation", The XXVth International Conference on Integrable Systems and Quantum symmetries, Czech Technical University (Prague, Czech Republic), 2017.06.09.
"Numerical solution of the radial Loewner equation", MSJ Spring Meeting 2017, Tokyo Metropolitan University (Japan), 2017.03.24.
"Numerical computation of the radial Loewner flow", Joint Meeting on Conformal Mappings and Value Distribution Theory, Chiba University (Japan), 2017.01.22.
"On a numerical algorithm for the solution of the radial Loewner equation", Tokyo Institute of Technology Complex Analysis Seminar, Tokyo Institute of Technology (Japan), 2016.10.26.
"Visualizing the radial Loewner flow and the evolution family ", Seminar on Geometric Complex Analysis, The University of Tokyo (Japan), 2016.10.03.
"A numerical algorithm for quasiconformal mappings", Topology and Computer, Nihon University, Tokyo, 2015.11.08.
"Numerical quasiconformal mappings by certain linear systems", Riemann surfaces and Discontinuous groups, Osaka University, Osaka, 2015.02.21.
"Piecewise linear approximation of quasiconformal mappings by certain linear systems", 東北大学大学院 情報科学研究科 情報数理談話会, 仙台, 2014年12月16日.
"線形系による擬等角写像の離散化", 東北大学 国際高等研究教育院 学際科学フロンティア研究所 共催 第2回 全領域合同研究交流会, 仙台, 2014年11月14日.
"線形系による擬等角写像の区分線形近似", 東工大複素解析セミナー, 2014年10月30日.
"線形系による離散擬等角写像 (Discrete quasiconformal maps via a linear system)", 日本数学会 2014年度秋期総合分科会, 広島, 2014年9月25日.
"線形系による擬等角写像の離散化", 第49回函数論サマーセミナー, 鹿児島, 2014年9月10日.
"効率的な数値擬等角写像の新しい構成手法", 東北大学国際高等研究教育機構 先端基礎科学領域基盤・情報工学社会領域基盤 合同主催 縦横無尽に階層・領域をまたぐ融合理工学セミナー, 仙台, 2013年12月6日.
"A numerical algorithm for quasiconformal mappings with measurable Beltrami coefficients", The 2nd GSIS-RCPAM International Symposium: Geometric Function Theory and Applications in Sendai, 2013.09.10.
On Zagier's observation for the Mandelbrot set, 第 48 回函数論サマーセミナー, 山口, 2013年9月4日.
"On the Coefficients of the Conformal Maps Associated with the Mandelbrot Set", 9th International Symposium on Geometric Function Theory and Applications, Istanbul, Turkey, 2013.08.27.
"On the coefficients of the normalized conformal mapping onto the exterior of the Mandelbrot set", The XXIInd Rolf Nevanlinna Colloquim (Poster Session), Helsinki, Finland, 2013.08.05-09.
"On the coefficients of the normalized conformal map associated with the Mandelbrot set", Seminar talk at University of Würzburg, Würzburg, Germany, 2013.08.02.
"On the coefficients of the Riemann mapping function for the exterior of the Mandelbrot set", Integrated Research on Complex Dynamics, Kyoto, Japan,2012.01.25.
"On the coefficients of the Riemann mapping function for the complement of the Mandelbrot set", The 19th International Conference on Finite or Infinite Dimensional Complex Analysis and Applications, Hiroshima, Japan, 2011.12.12.
"On the coefficients of the Riemann mapping function for the complement of the Mandelbrot set", 第46回函数論サマーセミナー, 大分, 2011年9月13日.
"On the coefficients of the Riemann mapping function for the complement of the Mandelbrot set", Conditions for Univalency of Functions and Applications, Kyoto, Japan, 2011.06.10.
ACM
IEEE Computational Intelligence Society
IEICE
Mathematical Society of Japan
Beltrami Equation Solver