Updated on 2026/04/01

写真a

 
TSURUTA YASUHITO
 
Organization
Undergraduate School School of Business Administration Associate Professor
Title
Associate Professor
External link

Degree

  • 博士（経済学） ( 金沢大学 )

Research Interests

  • 数理統計学

  • 方向統計学

  • ノンパラメトリック推定

Research Areas

  • Humanities & social sciences / Economic statistics

  • Informatics / Statistical science

Education

  • Kanazawa University

    2015.4 - 2018.3

    　 More details

  • Kanazawa University   Graduate School of Human and Socio-Environment Studies

    2013.4 - 2015.3

    　 More details

  • Kanazawa University

    2009.4 - 2013.3

    　 More details

Research History

  • Meiji University   School of Business Administration   Associate Professor

    2025.4

    　 More details

  • The University of Nagano   Faculty of Management Studies   Lecturer

    2023.4 - 2025.3

    　 More details

  • The University of Nagano   Faculty of Management Studies   Assistant Professor (non-tenured)

    2019.9 - 2023.3

    　 More details

  • Wakayama University

    2019.6 - 2019.9

    　 More details

  • The University of Tokyo   Center for Spatial Information Science at the University of Tokyo

    2018.7 - 2020.3

    　 More details

  • 和歌山県   企画総務課（データ利活用推進センター）   主事

    2018.4 - 2019.8

    　 More details

▼display all

Professional Memberships

Papers

  • Wrapped flat-top kernel density estimation with circular data Reviewed

    Yasuhito Tsuruta

    Statistical Papers   2026.4

    　More details

    Authorship：Corresponding author   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s00362-026-01820-3

    researchmap

  • Bias correction for kernel density estimation with spherical data Reviewed

    Yasuhito Tsuruta

    Journal of Multivariate Analysis   203   105338 - 105338   2024.6

    　More details

    Authorship：Corresponding author   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.jmva.2024.105338

    researchmap

  • Automatic data-based bin width selection for rose diagram Reviewed

    Yasuhito Tsuruta, Masahiko Sagae

    Annals of the Institute of Statistical Mathematics   2023

    　More details

    Authorship：Corresponding author   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s10463-023-00868-4

    Scopus

    researchmap

  • Improving kernel-based nonparametric regression for circular–linear data Reviewed

    Yasuhito Tsuruta, Masahiko Sagae

    Japanese Journal of Statistics and Data Science   5 ( 1 )   111 - 131   2022.7

    　More details

    Authorship：Corresponding author   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s42081-022-00145-3

    Scopus

    researchmap

  • PROPERTIES FOR CIRCULAR NONPARAMETRIC REGRESSIONS BY VON MIESE AND WRAPPED CAUCHY KERNELS Reviewed

    Yasuhito Tsuruta Masahiko Sagae

    Bulletin of informatics and cybernetics   ( 50 )   1 - 13   2018.12

    　More details

    Language：English   Publisher：統計科学研究会  

    We discuss the asymptotic properties with respect to nonparametric regression for circular data. We reveal theoretical properties for circular nonparametric regression by applying von Mises (VM) and wrapped Cauchy (WC) kernels. We derive the asymptotic normalities and the convergence rate of the weighted conditional mean integrated squared errors regarding VM and WC kernels. The numerical experiment shows that WC kernel outperforms VM kernel in the small samples, and the theoretical properties are supported in the large samples.

    CiNii Research

    researchmap

  • Theoretical properties of bandwidth selectors for kernel density estimation on the circle Reviewed

    Yasuhito Tsuruta, Masahiko Sagae

    Annals of the Institute of Statistical Mathematics   72 ( 2 )   511 - 530   2018.11

    　More details

    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s10463-018-0701-x

    Web of Science

    researchmap

  • GPSロガーを用いたクルーズ旅客の観光行動分析手法に関する研究 Reviewed

    大澤脩司, 藤生慎, 松田耕司, 寒河江雅彦, 鶴田靖人, 高山純一, 中山晶一朗

    日本クルーズ&フェリー学会論文集(Web)   ( 8 )   28‐41 (WEB ONLY)   2018.5

    　More details

    Language：Japanese  

    J-GLOBAL

    researchmap

  • ASYMPTOTIC PROPERTY OF WRAPPED CAUCHY KERNEL DENSITY ESTIMATION ON THE CIRCLE Reviewed

    Yasuhito Tsuruta, Masahiko Sagae

    Bulletin of informatics and cybernetics   ( 49 )   1 - 10   2017.12

    　More details

    Language：English   Publisher：統計科学研究会  

    We discuss theoretical properties of the Wrapped Cauchy (WC) kernel. In this paper, we show that the WC kernel has the convergent rate of O(n^<-2/3>) and holds the asymptotic normality. The rate of the WC kernel is not better than the rate O(n^<-4/5>) of the von Mises (VM) kernel. However, some numerical experiments show the better behavior of the WC kernel rather than the VM kernel under the condition of the multimodality and/or the heavy tail.

    CiNii Research

    researchmap

  • Higher order kernel density estimation on the circle Reviewed

    Yasuhito Tsuruta, Masahiko Sagae

    STATISTICS & PROBABILITY LETTERS   131   46 - 50   2017.12

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.spl.2017.08.003

    Web of Science

    researchmap

▼display all

Presentations

▼display all

Research Projects

  • 大規模高次元方向データのためのノンパラメトリック統計モデルを応用したロバスト推定

    Grant number：24K20746  2024.4 - 2028.3

    日本学術振興会  科学研究費助成事業  若手研究

    鶴田 靖人

    　 More details

    Grant amount：\4290000 （ Direct Cost: \3300000 、 Indirect Cost：\990000 ）

    researchmap

  • Nonparametric statistical model for high dimensional directional data

    Grant number：20K19760  2020.4 - 2024.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists  Grant-in-Aid for Early-Career Scientists

    　 More details

    Grant amount：\3380000 （ Direct Cost: \2600000 、 Indirect Cost：\780000 ）

    researchmap

Teaching Experience

  • データサイエンスへの誘い

    Institution：和歌山大学

    　More details