Rchr
J-GLOBAL ID：200901026689731098
Update date: Jan. 30, 2024
Akama Yohji
アカマ ヨウジ | Akama Yohji
Affiliation and department：
Job title：
Associate Professor
Other affiliations (1)：
-
Tohoku University
数理科学連携研究センター
Homepage URL (2)：
http://db.tohoku.ac.jp/whois/detail/0daf0fe8e1360d57b7acb3ec19f2258f.html
,
http://db.tohoku.ac.jp/whois/e_detail/0daf0fe8e1360d57b7acb3ec19f2258f.html
Research field (3)：
Applied mathematics and statistics
, Basic mathematics
, Geometry
Research keywords (2)：
Tilings and Quasicrystals
, Statisitical Learning Theory
Research theme for competitive and other funds (17)：
- 2006 - 現在 離散幾何
- 2004 - 現在 Machine Learning
- 2003 - 現在 Tiling
- 2016 - 2022 Symmetry and deformation of spherical tiling
- 2017 - 2019 単元型を持つ概外延的な型理論の操作的意味論と型検査アルゴリズム
- 2015 - 2019 The development of discrete geometric analysis
- 2011 - 2015 Mathematical approach to materials science by using non-commutative geometry
- 2009 - 2011 Efficiency for machine to learn discrete geometric objects
- 2007 - 2009 Reverse Mathematics in Constructive Mathematics
- 2007 - 2009 Knowledge Discovery from Structured Data with Efficient Methods of Searching Lower Sets Based on Frequency
- 2008 - statistical learning theory
- 2003 - 2005 近似プログララムの計算論-古典論理の証明のテストにむけて-
- 2001 - 2003 Comparative studies on nonstandard methods and constructive methods
- 2001 - 2003 Logic of Limit Computing and its Applications
- 1997 - 1999 Studies on logical structures of arithmetic and computation
- 1997 - 1998 変換系と翻訳の理論と応用
- 1996 - 1996 ゲーム理論とプログラム言語の意味論
Show all
Papers (59)：
-
Yohji Akama, Atina Husnaqilati. A Dichotomous Behavior of Guttman-Kaiser Criterion from Equi-Correlated Normal Population. Journal of the Indonesian Mathematical Society. 2022. 272-303
-
On deformed dodecahedron tilings. 2022. 85. 1. 1-14
-
Hyperbolic polyhedral surface with regular faces. Discrete Mathematics. 2022
-
Yohji Akama, Erxiao Wang, Min Yan. Tilings of the sphere by congruent pentagons III: Edge combination a5. Advances in Mathematics. 2022. 394. 107881-107881
-
AKAMA Yohji. Classification of spherical tilings by congruent quadrangles over pseudo-double wheels (II)-the isohedral case. Hiroshima Mathematical Journal. 2019. 48. 1. 1-34
ｍore...
MISC (24)：
-
Yohji Akama, Bobo Hua, Yanhui Su, Haohang Zhang. Graphs on surfaces with positive Forman curvature or corner curvature. 2020
-
Yohji Akama, Bobo Hua, Yanhui Su, Lili Wang. A curvature notion for planar graphs stable under planar duality. 2019
-
Yohji Akama, Bobo Hua. Hyperbolic polyhedral surfaces with regular faces. 2018
-
Yohji Akama, Erxiao Wang, Min Yan. Tilings of the Sphere by Congruent Pentagons III: Edge Combination $a^5. 2018
-
Yohji Akama. Confluent terminating extensional lambda-calculi with surjective pairing and terminal type. 2018
ｍore...
Lectures and oral presentations (70)：
-
A dichotomous behavior of Guttman-Kaiser criterion from equi-correlated normal population
(2022)
-
Shrinkage of eigenvalue distributions of sample correlation matrix formed from equi-correlated normal population
(Annual meeting of Mathematical Society of Japan 2022)
-
Graphs on surfaces with positive Forman curvature or corner curvature and spherical tilings
(2021)
-
A dichotomous behavior of Guttman-Kaiser rule from equi-correlated normal population and the limiting spectral distributions of random matrices
(2021)
-
Component retention to microarray datasets and Mar\v{c}henko-Pastur setting
(2020)
ｍore...
Education (5)：
- 1992 - 1995 Tokyo Institute of Technology Graduate School, Division of Science and Engineering 情報科学
- 1990 - 1992 Tokyo Institute of Technology
- 1989 - 1990 Tokyo Institute of Technology
- 1986 - 1989 The University of Tokyo The Faculty of Engineering Department of Mathematical Engineering and Information Physics
- 1984 - 1986 The University of Tokyo
Professional career (2)：
- Dr. of Science (Tokyo Institute of Technology)
- Master. of Science (Tokyo Institute of Technology)
Work history (5)：
- 1997/12 - 2000/03 ETL researcher
- 1998/04 - 1999/03 一橋大学教養部非常勤講師 非常勤講師
- 1995/04 - 1999/03 Graduate School of Science, Tokyo University Research Associate
- 1996/04 - 1996/09 千葉大学文学部行動科学科非常勤講師 非常勤講師
- 1992/04 - 1995/03 JSPS Research Fellow
Committee career (8)：
- 2013/04 - 現在 American Mathematical Society Reviewer
- 2006/04 - 現在 情報処理学会 調査研究運営委員会 ナチュラルコンピューティング研究 グループ(NC)幹事
- 2006/04 - 現在 情報処理学会 調査研究運営委員会 ナチュラルコンピューティング研究 グループ(NC)幹事
- 2012/09 - 学習理論における組合せ論に関する研究会 世話人
- 2006/04 - 2010/03 日本応用数理学会 「数理的技法による情報セキュリティ」研究部会 幹事
- 2006/04 - 2010/03 日本応用数理学会 「数理的技法による情報セキュリティ」研究部会 幹事
- 2005/10 - 2006/10 Workshop on Learning with Logics and Logics for Learning 2006 Program Committee
- 2005/10 - 2006/10 Workshop on Learning with Logics and Logics for Learning 2006 Program Committee
Show all
Awards (1)：
- 2001/03/23 - 日本ソフトウェア科学会 プログラミングおよびプログラミング言語ワークショップ 日本ソフトウェア科学会第3回プログラミングおよびプログラミング言語ワークショップ発表賞 発表賞
Association Membership(s) (3)：
Return to Previous Page
