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Nomura　Keishi

    Department of Media and Communications　Assistant Professor
Last Updated :2025/04/26

Researcher Information

Degree

  • Bachelor of Arts and Sciences（2018/03 The University of Tokyo）
  • Master of Arts and Sciences（2020/03 The University of Tokyo）

URL

Research funding number

  • 40998788

ORCID ID

J-Global ID

Research Interests

  • Formal ontology   Multivariate analysis   Classification   Data visualization   Item response theory   Measurement theory   statistical modeling   Library and information science   

Research Areas

  • Informatics / Intelligent informatics / Formal ontology
  • Informatics / Statistical science
  • Humanities & social sciences / Library/information science, humanistic/social informatics

Academic & Professional Experience

  • 2024/11 - Today  NTT Communication Science LaboratoriesHuman Information Science LaboratoryVisiting Researcher
  • 2024/04 - Today  Toyo UniversityFaculty of Sociology Department of Media and CommunicationAssistant Professor
  • 2023/04 - 2024/03  Senshu UniversitySchool of Human Sciences Department of PsychologyPart-time Lecturer
  • 2023/04 - 2024/03  The University of TokyoGraduate School of EducationSpecially Appointed Researcher
  • 2020/04 - 2023/03  Japan Society for the Promotion of ScienceResearch Fellow
  • 2018/10 - 2021/03  Nippon Telegraph and Telephone CorporationHuman Information Science Laboratory, NTT Communication Science LaboratoriesInternship

Education

  • 2020/04 - 2024/03  The University of Tokyo  Graduate School of Education  Division of Education Psychology, Developmental Sciences, Department of Integrated Educational Sciences
  • 2018/04 - 2020/03  The University of Tokyo  Graduate School of Arts and Sciences  Life Sciences, Department of Multidisciplinary Sciences
  • 2014/04 - 2018/03  The University of Tokyo  College of Arts and Sciences  Department of Integrated Sciences

Association Memberships

  • Japan Society of Library and Information Science   The Behaviormetric Society   Japanese Society of Computational Statistics   Society for Mathematical Psychology   

Published Papers

Conference Activities & Talks

  • Application of latent semantic scaling to high-dimensional text data for personality assessment  [Not invited]
    Yoshito Tan; Keishi Nomura; Kensuke Okada
    18th International Joint Conference CFE-CMStatistics  2024/12  Oral presentation  London  CFEnetwork, CMStatistics, and King's College London
  • Prediction of social desirability of items for comparative psychological scaling using natural language processing technique  [Not invited]
    Yoshito Tan; Keishi Nomura; Kensuke Okada
    The 52nd Annual Meeting of the Behaviormetric Society of Japannd Ann  2024/09  Oral presentation  Osaka  The Behaviormetric Society of Japan
  • Statistical model and scaling technique for comparative psychological measurement  [Not invited]
    Kensuke Okada; Kyosuke Bunji; Yoshito Tan; Keishi Nomura; Hiroshi Shimizu; Koji E. Kosugi
    The 52nd Annual Meeting of the Behaviormetric Society of Japan  2024/09  Public symposium  Osaka  The Behaviormetric Society of Japan
  • Validity of latent semantic scaling with domain-specific semantic space  [Not invited]
    Mizuki Kobayashi; Keishi Nomura; Koji E. Kosugi
    The 52nd Annual Meeting of the Behaviormetric Society  2024/09  Oral presentation  Osaka  The Behaviormetric Society of Japan
  • Prediction of the degree of discontent by the emotional polarity value assigned using latent semantic scaling  [Not invited]
    Mizuki Kobayashi; Keishi Nomura; Koji E. Kosugi
    The 88th Annual Convention of the Japanese Psychological Association  2024/09  Poster presentation  Kumamoto  The Japanese Psychological Association
  • Keishi Nomura; Shiro Kumano; Kensuke Okada
    The 29th Australasian Mathematical Psychology Conference  2024/02  Oral presentation  Perth  The Australian Society for Mathematical Psychology
  • Mizuki Kobayashi; Keishi Nomura
    Presentation Contest for Undergraduates and High School Students held by JPA Early Career Psychologists Network at the 87th Annual Meeting of the Japanese Psychological Association  Oral presentation  Hosted via on-demand delivery through Confit's video publishing system  JPA Early Career Psychologists Network
  • Mathematical structures of item response and their reinterpretations in human sciences  [Not invited]
    Keishi Nomura; Shiro Kumano; Kensuke Okada
    Seminar on methods of multivariate analysis for data with complex structures  2023/03  Oral presentation  Tachikawa  The Institute of Statistical Mathematics
  • Nontrivial predictive asymmetries among decision models and where they come from  [Not invited]
    Keishi Nomura; Kensuke Okada
    The 2022 edition of the annual joint meeting of the Society for Mathematical Psychology and the International Conference on Cognitive Modeling (In-person MathPsych/ICCM 2022)  2022/07  Oral presentation  Toronto  Society for Mathematical Psychology
  • A simple method for handling reflection invariance in Bayesian IRT  [Not invited]
    Keishi Nomura; Shiro Kumano; Kensuke Okada
    International Meeting of the Psychometric Society (IMPS) 2022  2022/07  Oral presentation  Bologna  Psychometric Society
  • A technical note on model ontology via multidimensional scaling  [Not invited]
    Keishi Nomura; Kensuke Okada
    The 11th Conference of the Asian Regional Section of the International Association for Statistical Computing  2022/02  Oral presentation  Kyoto  The Asian Regional Section of the International Association for Statistical Computing
  • A method to assign normative ratings to image database considering individual differences in response process: From a viewpoint of the formal duality in psychometric models  [Not invited]
    Keishi Nomura; Shiro Kumano; Kensuke Okada
    The 49th Annual Meeting of the Behaviormetric Society  2021/08  Oral presentation  held online on Zoom  The Behaviormetric Society of Japan
  • Revisiting measurement of the experience in VR: Methodological issues on presence  [Invited]
    Keishi Nomura
    Doctoral Symposium on Advanced VR  2021/07  Nominated symposium  held online on Zoom  Virtual Reality Educational Research Center
  • A unified theoretical framework for describing two-parameter logistic models  [Not invited]
    Nomura, K; Okada, K
    Seminar for Early Career Researchers in Japanese Society of Computational Statistics  2020/09  Oral presentation  held online on Zoom  Japanese Society of Computational Statistics
  • Shiro Kumano; Keishi Nomura
    The 34th Annual Conference of the Japanese Society for Artificial Intelligence, 2020  2020/06  Oral presentation  held online on Zoom  The Japanese Society for Artificial Intelligence
  • Response style removal from affective ratings  [Not invited]
    Kumano, S; Nomura, K
    IEICE Human Communication Group Symposium  2019/12  Oral presentation  Hiroshima, Japan  The Institute of Electronics, Information and Communication Engineers
  • Nomura, K; Murata, A; Yotsumoto, Y; Kumano, S
    The 41st Anuual Conference of the Cognitive Science Society  2019/07  Poster presentation  Montreal, Quebec, Canada  Cognitive Science Society
  • Nomura, K; Kumano, S; Yotsumoto, Y
    The 52nd Annual Meeting of the Society for Mathematical Psychology  2019/07  Poster presentation  Montreal, Quebec, Canada  Society for Mathematical Psychology
  • Spatiotemporal organization of systems-level effects of tES techniques applied to visual cortex during visual task  [Not invited]
    Nomura, K; Shima, S; Visscher, K.M; Seitz, A; Yotsumoto, Y
    Japanese Human Brain Imaging Meeting 2018  2018/09  Poster presentation  Tokyo, Japan  Japanese Human Brain Imaging Meeting
  • Yotsumoto, Y; Fan, Z; Katsui, S; Nomura, K; Shima, S
    41st European Conference on Visual Perception (ECVP)  2018/08  Poster presentation  Trieste, Italy
  • Nomura, K; Shima, S; Visscher, K.M; Seitz, A; Yotsumoto, Y
    Vision Sciences Society 18th annual meeting  2018/05  Poster presentation  St. Pete Beach, Florida, USA.  Vision Sciences Society
  • Comparison of effects of different transcranial electric stimulations applied to visual cortex  [Not invited]
    Nomura, K; Shima, S; Visscher, K.M; Seitz, A; Yotsumoto, Y
    The 4th CiNet Conference: Neural oscillation and functional connectivity: from anatomy to perception  2018/02  Poster presentation  Osaka, Japan  The Center for Information and Neural Networks (CiNet)
  • Nomura, K; Shima, S; Visscher, K.M; Seitz, A; Yotsumoto, Y
    Vision Society of Japan 2018 Winter Meeting  2018/01  Poster presentation  Tokyo, Japan  Vision Society of Japan
  • Nomura, K; Yotsumoto, Y
    1st Annual Conference of the Timing Research Forum  2017/10  Poster presentation  Strasbourg, France  Timing Research Forum
  • Increased temporal resolution when viewing affective pictures is due to bias in color saturation  [Not invited]
    Nomura, K; Yotsumoto, Y
    UTIDAHM Symposium  2017/10  Poster presentation  Tokyo, Japan  UTokyo Institute for Diversity and Adaptation of Human Mind: UTIDAHM
  • Basic image features account for increased temporal resolution induced by affective pictures  [Not invited]
    Nomura, K; Yotsumoto, Y
    International Symposium on the Science of Mental Time  2017/09  Poster presentation  Nara, Japan  The Science of Mental Time

Works

  • Keishi Nomura Others 9th Illusion Contest Award, Japanese Psychonomic Society 2017/12 -2017/12

Industrial Property Rights

Awards & Honors

  • 2023/11 JPA Early Career Psychologists Network Best Presenter Award (Second Place), Presentation Contest for Undergraduates and High School Students held by JPA Early Career Psychologists Network at the 87th Annual Meeting of the Japanese Psychological Association
     Prediction of the degree of discontent by the emotional polarity value assigned using Latent Semantic Scaling (LSS) JPN japan_society 
    受賞者: Mizuki Kobayashi;Keishi Nomura
  • 2020/03 Life Sciences, Department of Multidisciplinary Sciences, Graduate School of Arts and Sciences, The University of Tokyo Outstanding Graduate Student Award
     
    受賞者: Nomura, K
  • 2017/12 Japanese Psychonomic Society 9th Illusion Contest Award
     
    受賞者: Keishi Nomura

Research Grants & Projects

  • Japan Society for the Promotion of Science：KAKENHI
    Date (from‐to) : 2025/04 -2029/03 
    Author : Kensuke Okada; Izumi Matsuda; Tetsuya Kawamoto; Kyosuke Bunji; Keishi Nomura
  • Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows
    Date (from‐to) : 2020/04 -2023/03 
    Author : 野村圭史
     
    心理測定・個人差研究の分野で発展してきた測定モデルである項目反応モデル（Item Response Model, IRM）において項目と個人を入れ替えた状況を扱う転置型項目反応モデル（transposed Item Response Model，tIRM）について，概念的な整理を行い実データへの試験的な適用を開始した昨年度に引き続き，tIRMの新たなインスタンスを提案するとともに，tIRMをマルコフ連鎖モンテカルロ（Markov chain Monte Carko, MCMC）法を用いてベイズ推定するうえでしばしば厄介となる，尤度における不定性という問題に対処するための技術の開発を中心に研究をさらに展開したことが本年度の主な実績である。 まず，モデルの開発について言えば，項目と個人の両方の識別力を考慮した双対サーストン項目反応モデル（Dual Thurstonian IRM，DTIRM）に対応する転置型双対サーストン項目反応モデル（transposed DTIRM，tDTIRM）を提案し，感情心理学研究用の画像データベースに適用することで，反応プロセスの個人差を考慮したうえで刺激画像に項目反応理論ベースの基準評定値を付与できる可能性を示した。 次に，モデル推定上の基盤技術については，典型的なIRMの応用とは異なりtIRMの適用状況では識別力パラメータの台を制約しない方が自然であることが多いことを踏まえ，そのような非制約IRMをMCMC法によってベイズ推定する際に厄介となる，尤度における鏡映に関する不定性の問題に対処するためのアルゴリズムについての研究を展開した。予備的な検討の結果，MCMC法の出力の事後処理に基づくリラベリングアルゴリズムを適用できる可能性があることがわかった。

Teaching Experience

  • Introductory Seminar on Sociology
    Toyo University
  • Seminar on Media and Communications I
    Toyo University
  • Introductory Seminar on Media and Communications
    Toyo University
  • Special Lecture on Media and Communication A
    Toyo University
  • Data Analysis for Media Studies
    Toyo University
  • Graduation Thesis
    Senshu University
  • Seminar on Psychological Statistics
    Senshu University
  • Basics of Data Analysis in Psychology II
    Senshu University
  • Basics of Data Analysis in Psychology I (Statistical Methods for Psychology)
    Senshu University

Social Contribution

Academic Contribution

  • JMIR mHealth and uHealth
    Role: Peer review
    Type: Peer review etc

Others

  • 2020/04 -2023/03 Stipendiary Student, The Nakabe Scholarship Foundation
    Received support (2,160,000JPY in total) for my PhD study.
  • 2019/08 -2020/01 Japan Student Service Organization (JASSO) Outbound Scholarship (Fiscal Year 2019)
    Received support (80,000 JPY per month) as an exchange student at Stockholm University.
  • 2018/05 -2018/05 Grant Funding for Attendees of International Research Conferences (Travel Grant for Graduate Students to Attend International Research Conferences) by Division of Multi-Disciplinary Sciences (2nd Round, Fiscal Year 2017)
    Received a travel grant of 200,000 JPY for presenting at Vision Sciences Society 18th annual meeting.
  • 2017/10 -2017/10 Support for Early Career Researchers by MEXT Grant-in-Aid for Scientific Research on Innovative Areas (Area Name: "The Science of Mental Time: Investigation into the past, present and future")
    Received a travel grant of 200,000 JPY for presenting at the 1st conference of the Timing Research Forum.

Other link

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