Updated on 2021/03/30

写真a

 
TOKITA Keiichiro
 
Organization
Graduate School of Informatics Department of Complex Systems Science 1 Professor
Title
Professor
Contact information
メールアドレス
Other name(s)
TOKITA Kei
Profile
There are many things in this world that can be described by a simple equation, but when the number increases, the whole thing behaves in a very complex way. P. W. Anderson, one of the founders of complex systems science and a Nobel laureate in physics, left behind a famous phrase that beautifully expresses the essence of complex systems: “More is different”. Examples of the complex systems include ecosystems, metabolic systems in cells, immune systems, biological macromolecules, neural networks and deep learning, combinatorial optimization problems, information systems, economic systems, and social systems. We study how to understand and control those complex systems mathematically using methods such as nonlinear dynamics, statistical physics, and computational physics. At first glance, these problems may seem to be in completely different research fields, but they are mathematically closely related in that they are macroscopic phenomena that emerge when a large number of relatively simple things come together and influence each other through complex interactions. By looking at these phenomena from a unified perspective, it is not uncommon to gain a deeper understanding of each individual phenomenon. The evolutionary biologist E. O. Wilson, famous for his work on ants and as the founder of sociobiology, calls the integration of knowledge from various fields through complex systems science “consilience. We are trying to open up new research areas using a variety of methods, from analytical approaches in mathematics and physics to large-scale simulations using supercomputers and GPUs.
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Degree 3

  1. Dr. Sci. ( 1994.3   The University of Tokyo ) 

  2. Ms. Sci. ( 1991.3   Waseda University ) 

  3. B. Eng. ( 1989.3   Waseda University ) 

Research Interests 4

  1. Statistical mechanics

  2. Mathematical Biology

  3. Complex systems

  4. Diversity

Research Areas 2

  1. Natural Science / Biophysics, chemical physics and soft matter physics  / Mathematical biology

  2. Natural Science / Mathematical physics and fundamental theory of condensed matter physics  / Statistical mechanics

Current Research Project and SDGs 1

  1. Mathematical science of complex systems

Research History 11

  1. Nagoya University   Graduate School of Informatics Department of Complex Systems Science   Professor

    2019.4

  2. National Institute for Fusion Science   Visiting professor

    2017.4 - 2019.3

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    Country:Japan

  3. International Institute for Advanced Studies   IIAS Project "General Communication Studies"   Visiting scholar, project leader

    2014.4 - 2017.3

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    Country:Japan

  4. Nagoya University   Graduate School of Information Science   Professor

    2013.4

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    Country:Japan

  5. Osaka University   Cybermedia Center   Visiting professor

    2013.4

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    Country:Japan

  6. 総合地球環境学研究所   「地域環境知形成によるコモンズの創生と持続可能な管理」プロジェクト   研究員

    2011.10 - 2017.3

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    Country:Japan

  7. Osaka University   Cybermedia Center   Associate professor

    2007.4 - 2013.3

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    Country:Japan

  8. Harvard University   Program for Evolutionary Dynamics   Researcher

    2003.10 - 2004.8

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    Country:United States

  9. Osaka University   Cybermedia Center   Assistant Professor

    2000.4 - 2007.3

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    Country:Japan

  10. Harvard University   Department of Biology and Chemistry   Researcher

    1996.8 - 1998.8

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    Country:United States

  11. Department of Physics, Osaka University, Assistant Professor   Assistant

    1994.4 - 2000.3

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    Country:Japan

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Education 3

  1. The University of Tokyo   Graduate School, Division of Science   Department of Pure and Applied Sciences

    1991.4 - 1994.3

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    Country: Japan

  2. Waseda University   Graduate School, Division of Science and Engineering   Department of Physics and Applied Physics

    1989.4 - 1991.3

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    Country: Japan

  3. Waseda University   Faculty of Science and Engineering   Department of Applied Physics

    1985.4 - 1989.3

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    Country: Japan

Professional Memberships 3

  1. 日本生態学会   大会実行委員

    2001.8

  2. 日本数理生物学会   運営委員,研究奨励賞選考委員・委員長,Chairman of the SMB-JSMB Okubo Prize Selection Committee

    1992.10

  3. 日本物理学会   統計力学・物性基礎論分科世話人,2020年度年会実行委員

    1989.7

Committee Memberships 2

  1. Japanese Society for Mathematical Biology   Chair of the 2020 Annual Meeting Committee  

    2019.6 - 2020.9   

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    Committee type:学協会

  2. 日本数理生物学会研究奨励賞選考委員会   委員  

    2019.1 - 2019.12   

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    Committee type:学協会

 

Papers 18

  1. A Traffic Jam Model of Biological Evolution and Species Abundance Distribution Reviewed

    Kei Tokita, Jun Sato

    Proceedings of the 26th Symposium on Traffic Flow and Self-Driven Particles   ( 26 ) page: 1 - 4   2020.12

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (conference, symposium, etc.)  

  2. Analysis of mathematical model of gut flora and its interaction matrix

    Yuma TAGUCHI,Kei TOKITA

    RIMS Kokyuroku   ( 2166 ) page: 72 - 76   2020.7

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (other academic)  

  3. Population dynamics of ant-aphid system -Switching effect between mutualism and predation

    Atsuki NAKAI,Kei TOKITA

    RIMS Kokyuroku   ( 2166 ) page: 54 - 58   2020.7

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (conference, symposium, etc.)  

  4. Detection of Social Bots: Quantification of Language Independent Features and Bot Clusters

    Masaki SUGIMORI,Kazutoshi Sasahara,Kei Tokita

    Proceedings of the 32nd Annual Conference of the Japanese Society for Artificial Intelligence, 2018     page: 1P2-05-1 - 1P2-05-4   2018.6

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    Authorship:Last author   Language:Japanese   Publishing type:Research paper (other academic)  

    DOI: https://doi.org/10.11517/pjsai.JSAI2018.0_1P205

  5. Relative species abundance of replicator dynamics with sparse interactions Reviewed

    Tomoyuki Obuchi, Yoshiyuki Kabashima and Kei Tokita

    Journal of Statistical Mechanics     page: 113502   2016.11

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

    DOI: 10.1088/1742-5468/2016/11/113502

  6. Multiple peaks of species abundance distributions induced by sparse interactions Reviewed

    Tomoyuki Obuchi, Yoshiyuki Kabashima and Kei Tokita

    Physical Review E   Vol. 94   page: 022312   2016.8

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

    DOI: 10.1103/PhysRevE.94.022312

  7. Dynamic stability and chaotic multispecies-coexistence in a food web mode Invited Reviewed

    Kei Tokita

    Advances in Science, Technology and Environmentology (ASTE, Waseda University)     page: 000   2015.2

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

    The relationship between stability and complexity of an ecosystem has been one of the main issues in community
    ecology. In such ecosystems, a food web is one of the most complex biological networks in nature, and has been
    focused on by field and theoretical ecologists. We consider a food web model represented by the Lotka-Volterra equation
    with hierarchically ordered random interspecies interactions, and show that the model has a class of dynamic stability,
    and that an arbitrary number of species can coexist in it.

  8. Properties of ecosystems those are vulnerable during eco-fusion Reviewed

    Katsuhiko Yoshida, Kei Tokita

    Scientific Reports   Vol. 5   page: 7939   2015.1

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

    When two ecosystems with separate evolutionary histories come into contact (eco-fusion), reciprocal invasions occur during their fusion. Asymmetries in the migration direction or extinction rate then occur (e.g., during the Great American Biotic Interchange, GABI). Hypotheses have been proposed to describe this process, but the ecosystem properties have not been adequately discussed. To identify the ecosystem properties that create vulnerability to species loss during eco-fusion, we conducted computer simulations of the fusion of ecosystems with independent evolutionary histories. With asymmetrical species extinction rates, the ecosystem with a higher extinction rate had a shorter food chain, a higher ratio of animal species to plant species, and a lower ratio of carnivores to herbivores. Most ecosystems that have undergone isolated evolution are vulnerable. These results may explain the vulnerability of South America's ecosystem during the GABI and that of modern Australia.

    DOI: 10.1038/srep07939

  9. Analytical theory of species abundance distributions of a random community model Invited Reviewed

    Kei Tokita

    Population Ecology   Vol. 57 ( 1 )   2015.1

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

    We review the history and recent progress of the analytical theories of a random community models. In particular, we focus on a global stability analysis of replicator equations with random interactions and species abundance distributions based on statistical mechanics.

    DOI: 10.1007/s10144-014-0476-8

  10. GPGPU simulations of 2D lattice neutral models in ecology Reviewed

    Takeshi Oura and Kei Tokita

    Journal of Physics: Conference Series   Vol. 454   page: 012038 (7pages)   2013

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

    DOI: 10.1088/1742-6596/454/1/012038

  11. Species-area relationship for power-law species abundance distribution Reviewed

    Haruyuki Irie and Kei Tokita

    International Journal of Biomathematics   Vol. 5   page: 1260024 (9 pages)   2012.5

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

  12. Rank abundance relations in evolutionary dynamics of random replicators Reviewed

    Physical Review E   Vol. 78   page: 031924 (11 pages)   2008.9

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

  13. Statistical mechanics and stability of a model eco-system Reviewed

    Yoshimi Yoshino, Tobias Galla and Kei Tokita

    Journal of Statistical Mechanics     page: P09003 (24 pages)   2007.9

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

  14. Statistical mechanics of relative species abundance Invited Reviewed

    Kei Tokita

    Ecological Informatics   Vol. 1   page: 315-324   2006.11

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

  15. Species abundance patterns in complex evolutionary dynamics Reviewed

    Kei Tokita

    Physical Review Letters   Vol. 93   page: 178102 (4 pages)   2004.10

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

  16. Emergence of a complex and stable network in a model ecosystem with extinction and mutation Reviewed

    Kei Tokita and Ayumu Yasutomi

    Theoretical Population Biology   Vol. 63   page: 131-146   2003

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

  17. Large-Dimensional Replicator Equations with Antisymmetric Random Interactions Reviewed

    Tsuyoshi Chawanya and Kei Tokita

    Journal of Physical Society of Japan   Vol. 71 ( 2 ) page: 429-431   2002

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

  18. Dynamical Equation Approach to Protein Design Reviewed

    Kei Tokita, Macoto Kikuchi and Yukito Iba

    Progress of Theoretical Physics Supplement   Vol. 138   page: 378-383   2000

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

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Books 14

  1. Transformations of Social-Ecological Systems

    Sato, T., Chabay I., Heigeson, J. eds.( Role: Joint author)

    Springer  2019.1 

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    Language:English Book type:Scholarly book

  2. 地域環境学

    佐藤哲 編,菊地直樹 編( Role: Joint author)

    東京大学出版会  2018.1  ( ISBN:978-4-13-060320-1

  3. 岩波 生物学辞典 第5版

    巌佐庸・倉谷滋・斎藤成也・塚谷裕一(編集)( Role: Joint author)

    岩波書店  2013.2 

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    Language:Japanese

  4. 数理科学事典

    現代数理科学事典編集委員会( Role: Joint author)

    丸善  2009.12  ( ISBN:978-4621081259

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    Language:Japanese

  5. 生物間ネットワークを紐とく

    大串 隆之 (編集), 難波 利幸 (編集), 近藤 倫生 (編集)( Role: Joint author)

    京都大学出版会  2009.8 

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    Language:Japanese

  6. ネットワーク科学への招待

    青山秀明・相馬亘・藤原義久 共編著( Role: Joint author)

    サイエンス社  2008.7 

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    Language:Japanese

  7. 進化経済学ハンドブック

    進化経済学会(編集)( Role: Joint author)

    共立出版  2006.9 

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    Language:Japanese

  8. プラントミメティックス

    甲斐昌一 、森川弘道、 鈴木泰博(編集)( Role: Joint author)

    エヌ・ティー・エス  2006.8 

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    Language:Japanese

  9. 複雑系の構造と予測

    早稲田大学複雑系高等学術研究所 (編集)( Role: Joint author)

    共立出版  2006.6 

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    Language:Japanese

  10. ゲーム理論のフロンティア

    松田裕之・池上高志(共編著)( Role: Joint author)

    サイエンス社  2005.12 

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    Language:Japanese

  11. 生態学辞典

    巌佐 庸 (編集), 菊沢 喜八郎 (編集), 松本 忠夫 (編集), 日本生態学会 (編集)( Role: Joint author)

    共立出版  2003.6 

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    Language:Japanese

  12. 複雑さの数理

    相澤洋二(監訳)、龍野正実、時田恵一郎、橋本敬、秦浩起(訳)( Role: Joint author)

    産業図書  2001.7 

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    Language:Japanese

  13. 脳科学大辞典

    甘利 俊一 (編集), 外山 敬介 (編集)( Role: Joint author)

    朝倉書店  2000.4 

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    Language:Japanese

  14. Unifying Themes in Complex Systems

    Kei Tokita, et al.( Role: Joint author)

    Perseus Books  2000 

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    Language:English

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Presentations 75

  1. 大規模群集モデルに対応したパラメータ推定手法

    田口優真,時田恵一郎

    第68回日本生態学会大会  2021.3.18  日本生態学会

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    Event date: 2021.3.17 - 2021.3.21

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン(岡山大学)   Country:Japan  

  2. Lattice protein design by empirical Bayes’ method with the effect of water as external field

    Tomoei TAKAHASHI,George CHIKENJI,Kei TOKITA

    JPS 76th Annual Meeting, The Physical Society of Japan  2021.3.14  The Physical Society of Japan

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    Event date: 2021.3.12 - 2021.3.15

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Online   Country:Japan  

  3. 大自由度非線形進化力学系への統計力学的手法の応用

    田口優真,時田恵一郎

    第6回数理生物学交流発表会  2021.3.7  静岡大学

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    Event date: 2021.3.6 - 2021.3.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン(静岡大学)   Country:Japan  

  4. 複雑系科学とAI / DX用ブリッジAIシステム / 文字認識と文書のデジタル化 Invited

    時田恵一郎,宮田明

    THE AI Powered by 日本HP  2021.1.18  日本HP株式会社,株式会社レッジ

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    Event date: 2021.1.18 - 2021.1.31

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:オンライン   Country:Japan  

  5. Mathematical modeling of the ecosystem of Lake Shinji and Nakaumi

    Kei TOKITA,Taku KAWAMOTO,Hitoshi Sakano

    2021.1.9  Estuary Research Center, Shimane University

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    Event date: 2021.1.9 - 2021.1.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Matsue, Shimane, Japan   Country:Japan  

  6. A Traffic Jam Model of Biological Evolution and Species Abundance Distribution

    Kei TOKITA,Jun SATO

    The 26th Symposium on Traffic Flow and Self-driven Particles  2020.12.10  The Mathematical Society of Traffic Flow

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    Event date: 2020.12.10 - 2020.12.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Online (Nagoya University)   Country:Japan  

  7. 大規模群集モデルのパラメータ推定

    田口優真,時田恵一郎

    2020年度日本数理生物学会年会  2020.9.22  日本数理生物学会

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    Event date: 2020.9.20 - 2020.9.22

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン(名古屋大学)   Country:Japan  

  8. Protein design by optimization of role of water using empirical Bayes' estimation

    Tomoei TAKAHASHI,George CHIKENJI,Kei TOKITA

    JPS 2020 Autumn Meeting, The Physical Society of Japan  2020.9.9  The Physical Society of Japan

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    Event date: 2020.9.8 - 2020.9.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Online   Country:Japan  

  9. 相利的な非線形進化力学系での捕食やコストがもたらす多形の創出

    中井貴生,乾陽子,時田恵一郎

    日本物理学会 第75回年次大会 

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    Event date: 2020.3.16 - 2020.3.19

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学(東山キャンパス)   Country:Japan  

  10. 経験ベイズ推定による格子タンパク質模型のデザイン

    高橋智栄,千見寺浄慈,時田恵一郎

    日本物理学会第75回年次大会 

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    Event date: 2020.3.16 - 2020.3.19

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学(東山キャンパス)   Country:Japan  

  11. 多自由度非線形進化力学系の相互作用行列の推定

    田口優真, 時田恵一郎

    日本物理学会第75回年次大会 

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    Event date: 2020.3.16 - 2020.3.19

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学(東山キャンパス)   Country:Japan  

  12. 食物網のサンプリング理論と種個体数分布

    時田恵一郎

    日本物理学会第75回年次大会 

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    Event date: 2020.3.16 - 2020.3.19

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学(東山キャンパス)   Country:Japan  

  13. 内集団ひいきの創発

    村上大周, 時田恵一郎

    ゲーム理論ワークショップ2020 

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    Event date: 2020.3.8 - 2020.3.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:駒沢大学、東京都   Country:Japan  

  14. アブラムシはアリの一途さを求めない

    中井貴生,乾陽子,時田恵一郎

    第6回数理生物学交流発表会 

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    Event date: 2020.3.7 - 2020.3.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:静岡大学(浜松キャンパス)   Country:Japan  

  15. 多自由度非線形進化力学系を用いた大規模群集における相互作用の推定

    田口優真, 時田恵一郎

    第6回数理生物学交流発表会 

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    Event date: 2020.3.7 - 2020.3.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:静岡大学(浜松キャンパス)   Country:Japan  

  16. アリ-アブラムシ系の個体群ダイナミクス

    中井貴生,乾陽子,時田恵一郎

    第67回日本生態学会大会 

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    Event date: 2020.3.4 - 2020.3.8

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名城大学(天白キャンパス)   Country:Japan  

  17. 腸内細菌叢の数理モデルとその相互作用行列の解析

    田口優真, 時田恵一郎

    第67回日本生態学会大会 

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    Event date: 2020.3.4 - 2020.3.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名城大学(天白キャンパス)   Country:Japan  

  18. 食物網のサンプリング理論と種個体数分布

    時田恵一郎

    第67回日本生態学会大会 

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    Event date: 2020.3.4 - 2020.3.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名城大学(天白キャンパス)   Country:Japan  

  19. アリ・アブラムシ系の個体群ダイナミクス〜共生と捕食のスイッチング〜

    中井貴生,乾陽子,時田恵一郎

    生物数学の理論とその応用〜生命現象の定量的理解に向けて〜 

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    Event date: 2020.1.27 - 2020.1.31

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都大学・数理解析研究所   Country:Japan  

  20. 腸内細菌叢の数理モデルとその相互作用行列の解析

    田口優真, 時田恵一郎

    第16回 生物数学の理論とその応用〜生命現象の定量的理解に向けて〜 

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    Event date: 2020.1.27 - 2020.1.31

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都大学数理解析研究所   Country:Japan  

  21. 2パッチモデルとしての宍道湖−中海生物分布シミュレーション

    川元琢、時田恵一郎、坂野鋭

    第27回汽水域研究発表会・汽水域研究会第8回例会・汽水域合同研究発表会2020 

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    Event date: 2020.1.11 - 2020.1.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:島根大学(松江キャンパス)   Country:Japan  

  22. アリ-アブラムシ系の個体群ダイナミクス

    中井貴生,乾陽子,時田恵一郎

    日本生態学会中部地区大会 

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    Event date: 2019.11.16

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名城大学(天白キャンパス)   Country:Japan  

  23. アリ-アブラムシ系の個体群ダイナミクス Invited

    中井貴生, 時田恵一郎

    第12回水戸MI(数学・情報数理)セミナー 

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    Event date: 2019.10.30

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:茨城大学(水戸キャンパス)   Country:Japan  

  24. 共生と多型に関する数理モデル

    中井貴生,時田恵一郎

    日本数理生物学会年会 

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    Event date: 2019.9.14 - 2019.9.16

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京工業大学(大岡山キャンパス)   Country:Japan  

  25. 相互作用グラフの特徴を考慮したベイズ学習によるタンパク質デザイン

    高橋智栄、千見寺浄慈、時田恵一郎

    日本物理学会秋季大会 

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    Event date: 2019.9.10 - 2019.9.13

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岐阜大学(岐阜市)   Country:Japan  

  26. Evolution of In-group Favoritism and Game Theoretical Analysis

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    Event date: 2019.9.10 - 2019.9.13

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  27. 共生と多型に関する数理モデル

    中井貴生,時田恵一郎

    第2回数理生物学若手の会 夏の学校 

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    Event date: 2019.8.29 - 2019.8.31

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:総合研究大学院大学(葉山キャンパス)   Country:Japan  

  28. 腸内細菌叢の生態系

    田口優真,時田恵一郎

    第2回数理生物若手夏の学校 

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    Event date: 2019.8.29 - 2019.8.31

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:総合研究大学院大学(葉山キャンパス)   Country:Japan  

  29. Theory of Species Abundance Distribution of > Evolutionary Dynamics Invited International conference

    Kei Tokita

    7th China-India-Japan-Korea International > Conference on Mathematical Biology (CIJK 2019) 

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    Event date: 2019.8.23 - 2019.8.27

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:China  

  30. Domain theoretical approach to boolean networks International conference

    Shojiro Abe, Kei Tokita

    7th China-India-Japan-Korea International Conference on Mathematical Biology (CIJK 2019) 

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    Event date: 2019.8.23 - 2019.8.27

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Beijing University of Science and Technology, Beijing, China   Country:China  

  31. Evolution of In-group Favoritism and Game Theoretical Analysis International conference

    Taishu Murakami, Kei Tokita

    7th China-India-Japan-Korea International Conference on Mathematical Biology (CIJK 2019) 

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    Event date: 2019.8.23 - 2019.8.27

    Language:English   Presentation type:Poster presentation  

    Venue:Beijing University of Science and Technology, Beijing, China   Country:China  

  32. Protein design using Bayesian learning International conference

    Tomoei Takahashi, George Chikenji, and Kei Tokita

    7th China-India-Japan-Korea International Conference on Mathematical Biology (CIJK 2019) 

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    Event date: 2019.8.23 - 2019.8.27

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Beijing University of Science and Technology, Beijing, China,   Country:China  

  33. 内集団ひいきのゲーム理論的解析

    村上大周,時田恵一郎

    第64回物性若手夏の学校 

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    Event date: 2019.8.5 - 2019.8.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:ぎふ長良川温泉ホテルパーク   Country:Japan  

  34. ベイズ学習による格子タンパク質デザイン

    高橋智栄、千見寺浄慈、時田恵一郎

    第64回物性若手夏の学校 

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    Event date: 2019.8.5 - 2019.8.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:ぎふ長良川温泉パーク、岐阜市   Country:Japan  

  35. ベイズ学習による格子タンパク質模型のデザイン

    高橋智栄、千見寺浄慈、時田恵一郎

    日本物理学会第74回年次大会 

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    Event date: 2019.3.14 - 2019.3.17

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学(伊都キャンパス)   Country:Japan  

  36. 機械学習と物理学のつながり Invited

    時田恵一郎

    核融合科学研究所セミナー 

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    Event date: 2019.2.21

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  37. 生態ネットワークの種個体数分布 Invited

    時田恵一郎

    京都大学生態学研究センターセミナー 

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    Event date: 2019.1.18

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  38. 多様性の科学に対する統計物理学的アプローチ Invited

    時田恵一郎

    経済・社会への分野横断的研究会 

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    Event date: 2018.12.4 - 2018.12.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:キヤノングローバル戦略研究所   Country:Japan  

  39. Dynamic theory of species abundance distributions Invited International conference

    Kei Tokita

    The 8th East Asian Federation of Ecological Societies International Congress 

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    Event date: 2018.4.21 - 2018.4.23

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  40. Partial annealing as evolution in a model ecosystem

    Tim Ritmeester, Kei Tokita

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    Event date: 2018.3.22 - 2018.3.25

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  41. 二部グラフ型ホストーパラサイトモデルからホスト間相互作用のあるえこえぴモデルへ Invited

    時田恵一郎

    日本生態学会 

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    Event date: 2018.3.16

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  42. 機械学習を用いたソーシャルボットの検出と分析:英語と日本語の比較

    杉森真樹, 笹原和俊, 時田恵一郎

    第2回計算社会学ワークショップ 

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    Event date: 2018.3.6 - 2018.3.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  43. Statistical mechanics of population dynamics Invited International conference

    Seminar of Department of Physics, Inha University 

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    Event date: 2018.1.17

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  44. Overview of theoretical modeling on species abundance distribution Invited International conference

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    Event date: 2018.1.16

    Language:English   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Country:Korea, Republic of  

  45. 蝶とウイルスの擬態 Invited

    時田恵一郎

    DNA鑑定などに関する勉強会 

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    Event date: 2017.11.4 - 2017.11.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:山形市桜田温泉ヒルズサンピア山形   Country:Japan  

  46. 大陸島嶼生態系の二次元格子中立モデル

    長瀬久在, 時田恵一郎

    日本数理生物学会第27回年会 

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    Event date: 2017.10.6 - 2017.10.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  47. Species- abundance relationships in inferring pollution impacts on benthic macroinvertebrate communities in streams International conference

    T.S. Chon, X.D. Qu, M.Y. Song, K. Tokita, Y.S. Park

    The International Society for Ecological Modelling Global Conference 2017 

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    Event date: 2017.9.17 - 2017.9.21

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  48. Diversity, stability and the relative species abundance of replicator dynamics with complex interspecies interactions International conference

    K. Tokita

    The international Society for Ecological Modelling Global Conference 2017 

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    Event date: 2017.9.17 - 2017.9.21

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Ramada Plaza, Jeju, Korea   Country:Korea, Republic of  

  49. Diversity, stability and the relative species abundance of replicator dynamics with complex interspecies interactions Invited International conference

    Kei Tokita

    6th China India Japan Korea Mathematical Biology Colloquim (CIJKMB) 

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    Event date: 2017.8.23 - 2017.8.26

    Language:English   Presentation type:Oral presentation (general)  

    Country:India  

  50. 大陸島嶼生態系の二次元格子中立モデル

    長瀬久在, 時田恵一郎

    日本物理学会第72回年次大会 

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    Event date: 2017.3.17 - 2017.3.20

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  51. TAP平均場近似アルゴリズムを用いた協調フィルタリング型ボルツマンマシン学習

    日當泰輔, 時田恵一郎

    日本物理学会第72回年次大会 

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    Event date: 2017.3.17 - 2017.3.20

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  52. 三題噺:米大統領選挙、SYNC、言語進化 Invited

    時田恵一郎

    国際高等研究所研究会「総合コミュニケーション学」 

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    Event date: 2017.2.18 - 2017.2.19

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  53. TAP平均場近似による制限ボルツマンマシン学習と協調フィルタリングへの応用

    日當泰輔, 時田恵一郎

    日本物理学会・2016年秋季大会(金沢大学) 

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    Event date: 2016.9.13 - 2016.9.16

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  54. 食物網の種個体数分布II

    時田恵一郎

    日本物理学会・2016年秋季大会(金沢大学) 

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    Event date: 2016.9.13 - 2016.9.16

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  55. Species abundance patterns of a food web model

    Kei Tokita

    2016 Japanese Society for Mathematical Biology annual meeting (JSMB2016), Kyushu University 

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    Event date: 2016.9.7 - 2016.9.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kyushu University   Country:Japan  

  56. 正直シグナル Invited

    時田恵一郎

    国際高等研究所研究会「総合コミュニケーション学」 

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    Event date: 2016.8.22 - 2016.8.23

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  57. 生物・社会ネットワークの種個体数分布 Invited

    時田恵一郎

    物理学的普遍性から生物学的普遍性へ 

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    Event date: 2016.8.4 - 2016.8.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  58. 統計力学を使って生物や社会における多様性の起源を探る Invited

    時田恵一郎

    核融合科学研究会・特別講演会 

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    Event date: 2016.6.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  59. 様々なスケールで見られる生物の信号とコミュニケーション:蝶とウィルスの擬態 Invited

    時田恵一郎

    第2回 非線形現象の捉え方 

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    Event date: 2016.5.13 - 2016.5.15

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  60. Theory of Species Abundance Distributions in Community Ecology Invited International conference

    Kei Tokita

    The 7th EAFES International Congress, Daegu, Korea 

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    Event date: 2016.4.19 - 2016.4.22

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  61. 食物網モデルの種個体数分布

    時田恵一郎

    日本生態学会 

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    Event date: 2016.3.20 - 2016.3.24

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:宮城県仙台市   Country:Japan  

  62. Species Abundance Patterns of a Food Web Model

    Kei Tokita

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    Event date: 2016.3.19 - 2016.3.22

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  63. 互いに類似したサブネットワークで構成される相互作用ネットワーク上での種個体数分布

    大浦健志, 時田恵一郎

    日本物理学会 

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    Event date: 2016.3.19 - 2016.3.22

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:宮城県仙台市   Country:Japan  

  64. TAP for Restricted Boltzmann Machine Learning and Its Application to Collaborative Filtering

    Taisuke Hinata, Kei Tokita

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    Event date: 2016.3.19 - 2016.3.22

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  65. The Science of Biodiversity: Theoretical Perspectives Invited

    Kei Tokita

    The International Research Unit of Advanced Future Studies, Kyoto University 

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    Event date: 2016.3.16 - 2016.3.19

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  66. 生物・社会ネットワークの非対称な世界 Invited

    時田恵一郎

    国際高等研究所研究会「ネットワークの科学」 

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    Event date: 2016.2.29 - 2016.3.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  67. 生物多様性の科学 Invited

    時田恵一郎

    武蔵野大学 数理工学センター(MCME)セミナー 

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    Event date: 2016.2.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:武蔵野大学   Country:Japan  

  68. Biological and social communications International conference

    Kei Tokita

    Joint Conferenece of 2015 Annual Meeting of Japanese Society for Mathematical Biology and 2015 5th China-Japan-Korea International Conference on Mathematical Biology (CJKICMB2012) 

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    Event date: 2015.8.26 - 2015.8.29

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  69. Statistical mechanics of competitive exclusion of ecological communities International conference

    Takeshi Oura and Kei Tokita

    Joint Conferenece of 2015 Annual Meeting of Japanese Society for Mathematical Biology and 2015 5th China-Japan-Korea International Conference on Mathematical Biology (CJKICMB2012) 

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    Event date: 2015.8.26 - 2015.8.29

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  70. Degree of interactions essentially changes relative species abundance International conference

    Tomoyuki Obuchi, Yoshiyuki Kabashima and Kei Tokita

    Joint Conferenece of 2015 Annual Meeting of Japanese Society for Mathematical Biology and 2015 5th China-Japan-Korea International Conference on Mathematical Biology (CJKICMB2012) 

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    Event date: 2015.8.26 - 2015.8.29

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  71. Molecular mimicry model of autoimmune disease International conference

    Kei Tokita, Megumi Masuda, Akira Sasaki

    Annual Meeting of Society for Mathematical Biology  

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    Event date: 2015.6.30 - 2015.7.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  72. ブロック構造をもつランダム行列の固有値分布

    大浦健志,時田恵一郎

    日本物理学会第70回年次大会 

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    Event date: 2015.3.21 - 2015.3.24

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:早稲田大学,東京   Country:Japan  

  73. Statistical mechanics of evolutionary dynamics: an answer to the diversity-stability debate in community ecology International conference

    Kei Tokita

    New Challenges in Complex System Science  

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    Event date: 2014.10.24 - 2014.10.26

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  74. Spatially Explicit Neutral Model International conference

    Kei Tokita and Takeshi Oura

    Joint Annual Meeting of the Japanese Society for Mathematical Biology and the Society for Mathematical Biology (JSMB/SMB2014)  

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    Event date: 2014.7.28 - 2014.8.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  75. ランダム相互作用をもつBouchaud-Mezardモデル

    大浦健志・時田恵一郎

    日本物理学会第69回年次大会 

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    Event date: 2014.3.27 - 2014.3.30

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東海大学   Country:Japan  

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Research Project for Joint Research, Competitive Funding, etc. 6

  1. 低解像度・多ノイズ・不明瞭罫線等不明瞭紙文書のデジタル化手法の開発

    Grant number:1920D9100c  2021.03

    学内共同研究  共同研究

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    Authorship:Principal investigator  Grant type:Collaborative (industry/university)

    Grant amount:\260000 ( Direct Cost: \200000 、 Indirect Cost:\60000 )

  2. 深層学習を用いた不定形手書き帳票の自動処理システムの開発

    2019.02 - 2019.03

    学内共同研究 

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    Grant type:Collaborative (industry/university)

    Grant amount:\220000 ( Direct Cost: \200000 、 Indirect Cost:\20000 )

  3. General Communication Studies

    2014.04 - 2017.03

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    Grant type:Competitive

  4. 生命の物理

    2010.04 - 2011.03

    財団法人交流協会 若手研究者交流事業 短期グループ派遣 

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    Grant type:Competitive

  5. 国際数理生物会議および数理生物学会(SMB)年会

    2009.04 - 2010.03

    平成21年度日本学術振興会国際学会等派遣事業 第I期 

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    Grant type:Competitive

  6. 生物群集における種の豊富さのパターンとその環境アセスメントへの応用

    2006.04 - 2007.03

    国際共同研究 

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KAKENHI (Grants-in-Aid for Scientific Research) 10

  1. ICTとAIプログラムから創造される地域環境

    Grant number:1920K20576  2019.07 - 2023.03

    科学研究費補助金 

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    Authorship:Coinvestigator(s) 

  2. 大規模生態群集に見られる多様性のパターンとその創出機構

    2012.04 - 2015.03

    科学研究費補助金  基盤研究(C)

    時田恵一郎

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    Authorship:Principal investigator 

  3. 生物情報ネットワークの構造および動的挙動の数理解析

    2005.04 - 2010.03

    科学研究費補助金  特定領域研究

    阿久津達也

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    Authorship:Coinvestigator(s) 

  4. 進化的に獲得された相空間ランドスケープについての理論的研究

    2005.04 - 2007.03

    科学研究費補助金  基盤研究(C)

    菊池誠

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    Authorship:Coinvestigator(s) 

  5. 生物多様性の維持機構に関する統計力学的・計算物理学的研究

    2002.04 - 2005.03

    科学研究費補助金  若手研究(B)

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    Authorship:Principal investigator 

  6. 生態系および蛋白質モデルにおける進化的に獲得された総空間構造の特徴づけとその意味

    2001.04 - 2003.03

    科学研究費補助金  基盤研究(C)

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    Authorship:Coinvestigator(s) 

  7. 蛋白質等のヘテロ高分子の設計問題に関する理論的研究

    2000.04 - 2002.03

    科学研究費補助金  奨励研究(A)

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    Authorship:Principal investigator 

  8. 生態系および蛋白質モデルによる進化の力学と論理

    1999.04 - 2001.03

    科学研究費補助金  基盤研究(C)

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    Authorship:Coinvestigator(s) 

  9. 蛋白質の天然構造の創発的進化についての計算物理学的研究

    1998.04 - 2000.03

    科学研究費補助金  奨励研究(A)

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    Authorship:Principal investigator 

  10. 蛋白質の折り畳みと進化的な配列淘汰についての統計力学的研究

    1996.08 - 1998.08

    科学研究費補助金  海外特別研究員研究費

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    Authorship:Principal investigator 

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Teaching Experience (On-campus) 55

  1. 自然情報学特別研究1

    2019

  2. 複雑システム系演習1

    2019

  3. 複雑システム系演習3

    2019

  4. 複雑システム系序論2

    2019

  5. 複雑システム系序論1

    2019

  6. シミュレーションサイエンス1

    2019

  7. 応用数理特論

    2019

  8. 情報物理学特論

    2019

  9. 計算情報学1

    2019

  10. 物理学基礎I

    2019

  11. 自然情報学特別研究2

    2019

  12. 多自由度システム情報論セミナーII-E~H

    2019

  13. 多自由度システム情報論セミナーI-E~H

    2019

  14. シミュレーションサイエンス1

    2018

  15. 物質情報学3

    2018

  16. 複雑システム系序論1

    2018

  17. 複雑システム系序論2

    2018

  18. Information Physics

    2018

  19. 応用数理特論

    2018

     詳細を見る

    多元数理研究科、理学部数学科

  20. 計算情報学1

    2018

  21. 多自由度システム情報論セミナーII-A~D

    2017

  22. 多自由度システム情報論セミナーI A~D

    2017

  23. シミュレーション科学入門

    2017

  24. 応用数理特論(理学部数学科、大学院多元数理研究科)

    2017

  25. 自然情報学特別研究2

    2017

  26. 自然情報学特別研究1

    2017

  27. 物質情報学3

    2017

  28. 物質情報学2

    2017

  29. 応用数理特論(理学部数学科、大学院多元数理研究科)

    2016

  30. 多自由度システム情報論セミナーII-A~D

    2016

  31. 多自由度システム情報論セミナーI A~D

    2016

  32. 自然情報学特別研究2

    2016

  33. 自然情報学特別研究1

    2016

  34. 情報科教育法I

    2016

  35. 物質情報学3

    2016

  36. 物質情報学2

    2016

  37. ミニ講義 名古屋大学オープンキャンパス

    2016

  38. シミュレーション科学入門

    2016

  39. 情報科学概論

    2015

  40. 情報科教育法I

    2015

  41. 自然情報学特別研究1,2

    2015

  42. 多自由度システム情報論セミナーI-A~D

    2015

  43. 多自由度システム特論

    2015

  44. シミュレーション科学入門

    2015

  45. 物質情報学3

    2015

  46. 物質情報学2

    2015

  47. シミュレーション科学入門

    2014

  48. 物質情報学3

    2014

  49. 物質情報学2

    2014

  50. 自然情報学特別研究1,2

    2014

  51. 多自由度システム情報論セミナーI-A~D

    2014

  52. 情報物質学2

    2013

  53. 多自由度システム特論

    2013

  54. 自然情報学特別研究1,2

    2013

  55. 多自由度システム情報論セミナーI-A~D

    2013

▼display all

Teaching Experience (Off-campus) 5

  1. 2018.4 - 2019.3 Mie University)

  2. 2018.4 - 2019.3 Hiroshima University)

  3. 2017.4 - 2018.3 Okayama University)

  4. 2013.4 - 2014.3 Osaka University)

  5. 2013.4 - 2014.3 Tokyo Institute of Technology)

 

Social Contribution 5

  1. 大阪府立四條畷高校・飯盛セミナー「新型コロナと情報」

    Lecturer

    大阪府立四條畷高校  大阪府立四條畷高校「飯盛セミナー」  2020.10.31

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    Audience: High school students

    Type:Visiting lecture

    大学での学びや研究について, covid-19や情報学の話題を題材に, 高校生に講演を行った.

  2. 名古屋大学教育学部付属高校SSHコア「数学的思考力を基盤に多領域に応答する人材の育成」第1ステージ講義「ベイズの定理」

    Lecturer

    名古屋大学教育学部附属中学・高等学校  2019.8

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    Audience: High school students

    Type:Visiting lecture

  3. 名古屋大学教育学部付属高校SSHコア「数学的思考力を基盤に多領域に応答する人材の育成」第1ステージ講義「Introduction to Mathematical Biology」

    Lecturer, Organizing member

    名古屋大学教育学部附属中学・高等学校  2018.4 - Now

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    Audience: High school students

    Type:Visiting lecture

  4. Special visiting lecture for high school students at Daegu, Korea

    Lecturer

    2016.12

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    Audience: High school students

    Type:Visiting lecture

  5. Special visiting lecture at Chiba Prefectural Junior High/High School

    Lecturer

    2016.11

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    Audience: Junior students, High school students

    Type:Visiting lecture