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Imakura Akira

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Affiliation
Faculty of Engineering, Information and Systems
Official title
Associate Professor
Birth date
1984-01
URL
Email
 
Research fields
High performance computing
Computational science
Research keywords
Numerical Analysis
Eigenvalue problem
Linear system
Machine Learning
Research projects
非線形非負行列分解を用いたディープニューラルネットワーク計算手法の開発2018-04 -- 2020-03今倉暁JST/ACT-I(加速フェーズ)26,000,000Yen
複素モーメント型超並列固有値解析手法に対する数理的耐障害技術の開発2017-04 -- 2021-03Akira ImakuraJapan Society of for the Promotion of Science/Grant-in-Aid for Scientific Research4,030,000Yen
非線形非負行列分解を用いたディープニューラルネットワーク計算手法の開発2016-12 -- 2018-03Akira ImakuraJST/ACT-I3,900,000Yen
大規模連立一次方程式に対する反復法を用いた前処理技術の開発と科学技術計算への応用2013-04 -- 2016-03Akira ImakuraJSPS/Grant-in-Aid for Young Scientists (B)4,030,000Yen
Wavelet変換を用いての超大規模連立一次方程式の前処理の構築2009-04 -- 2011-03Akira ImakuraJSPS/Grant-in-Aid for JSPS Fellows1,400,000Yen
Career history
2019-01 -- (current)University of Tsukuba Faculty of Engineering, Information and Systems Associate Professor
2013-04 -- 2018-12University of Tsukuba Faculty of Engineering, Information and Systems Assistant Professor
2011-04 -- 2013-03University of Tsukuba Center for Computational Sciences Research Fellow
Academic background
2008-04 -- 2011-03Nagoya University Graduate School of Engineering Department of Computational Science and EngineeringCompleted
2006-04 -- 2008-03Nagoya University Graduate School of Engineering Department of Computational Science and EngineeringCompleted
2002-04 -- 2006-03Nagoya University School of Engineering Department of Physical Science and EngineeringGraduated
Degree
2011-03Doctor of EngineeringNagoya University
Academic societies
2015-08 -- (current)SIAM
2013-06 -- (current)Information Processing Society of Japan
2008-06 -- (current)The Japan Society for Industrial and Applied Mathematics
Honors & Awards
2018-11筑波大学 若手教員奨励賞
2017-09日本応用数理学会2017年度年会 最優秀ポスター賞
2017-06日本応用数理学会 2017年研究部会連合発表会 優秀講演賞
2016-09日本応用数理学会2016年度年会 最優秀ポスター賞
2013-12今後のHPC(基盤技術と応用)に関するワークショップ 優秀講演賞
2013-05日本応用数理学会 第9回 若手優秀講演賞(2012年度)
2011-09平成23年度日本応用数理学会論文賞(応用部門)
2010-09平成22年度日本応用数理学会論文賞(ノート部門)
2008-09第3回 計算科学フロンティアフォーラム 分野別最優秀賞(アルゴリズム・CAE・一般)
2008-04ALA2018 The first prize for the best presentation among young participants
Articles
Books
Conference, etc.
  • 複素モーメント型部分空間を用いた教師あり次元削減法の提案
    今倉 暁; 松田萌望; 叶 秀彩; 櫻井鉄也
    日本応用数理学会 第15回 研究部会連合発表会/2019-03-04--2019-03-05
  • 複素モーメント型教師あり次元削減法
    今倉 暁; 松田萌望; 叶 秀彩; 櫻井鉄也
    日本応用数理学会 2018年度 年会/2018-09-03--2018-09-05
  • 最小二乗確率的分類器を用いた多峰性のあるデータに対する特異点検出
    与田裕之; 今倉暁; 松田萌望; 叶 秀彩; 櫻井鉄也
    第48回数値解析シンポジウム(NAS2019)/2019-06-10--2019-06-12
  • Distributed Collaborative Feature Selection Based on Intermediate Representation
    Ye Xiucai; Li Hongmin; Akira Imakura; Sakurai Tetsuya
    28th International Joint Conference on Artificial Intelligence (IJCAI-19)/2019-08-10--2019-08-16
  • Benefits from using mixed precision computations in the ELPA-AEO and ESSEX-II eigensolver projects
    Alvermann Andreas; Basermann Achim; Bungartz Hans-Joachim...
    International Workshop on Eigenvalue Problems - Algorithms; Software and Applications, in Petascale Computing (EPASA)/2018-03-05--2018-03-06
  • Minimal residual-like condition with collinearity for shifted Krylov subspace methods
    Imakura Akira
    International Workshop on Eigenvalue Problems - Algorithms; Software and Applications, in Petascale Computing (EPASA)/2018-03-05--2018-03-06
  • Efficient implementations of the modified Gram-Schmidt orthogonalization with a non-standard inner product
    Imakura Akira; Yamamoto Yusaku
    International Workshop on Eigenvalue Problems - Algorithms; Software and Applications, in Petascale Computing (EPASA)/2018-03-05--2018-03-06
  • A complex moment-based method and its improvement for computing partial singular value decomposition
    Imakura Akira; Sakurai Tetsuya
    The 37th JSST Annual International Conference on Simulation Technology (JSST2018)/2018-09-18--2018-09-20
  • Time-efficient tensor reordering procedures for HOTRG in distributed parallel environment
    Yamada Haruka; Imakura Akira; Imamura Toshiyuki; Sakurai ...
    Tensor Network States: Algorithms and Applications (TNSAA)/2018-12-03--2018-12-06
  • Complex Moment-Based Supervised Eigenmap for Dimensionality Reduction
    Imakura Akira; Matsuda Momo; Ye Xiucai; Sakurai Tetsuya
    The Thirty-Third AAAI Conference on Artificial Intelligence (AAAI-19)/2019-01-28--2019-02-01
  • A contour intergral-based stochastic estimator for eigenvalue counts of generalized eigenproblems
    Futamura Yasunori; Yano Takahiro; Imakura Akira; Sakurai ...
    SIAM Conference on Computational Science and Engineering (CSE19)/2019-02-25--2019-03-01
  • Spectral Anomaly Detection in Large Graphs Using a Complex Moment-based Eigenvalue Solver
    Futamura Yasunori; Ye Xiucai; Imakura Akira; Sakurai Tetsuya
    2019 International Workshop on Cyber-Physical Systems and Cyber-Resilience/2019-03-20--2019-03-20
  • Nonlinear semi-NMF based method for deep neural network computations
    Imakura Akira
    International Symposium on "Digital Science Now"/2019-06-07--2019-06-07
  • Verified computing for partial eigenvalues using a contour integral-type eigensolver
    Takayasu Akitoshi; Imakura Akira; Morikuni Keiichi
    SCAN2018/2018-9-10--2018-9-15
  • Verified partial eigenvalue computation for generalized Hermitian eigenproblems using contour integrals
    今倉暁; 保國 惠一; Takayasu Akitoshi
    第47回数値解析シンポジウム/2018-6-6--2018-6-8
  • 一般化エルミート固有値問題の周回積分型精度保証付き部分固有値計算
    今倉 暁; 保國 惠一; 高安 亮紀
    日本応用数理学会2018年度年会/2018-9-3--2018-9-5
  • Verified partial eigenvalue computation for generalized Hermitian eigenproblems using contour integrals
    今倉暁; 保國惠一; 高安 亮紀
    第47回数値解析シンポジウム, 福井/2019-06-07--2019-06-07
  • Verified computing for partial eigenvalues using a contour integral-type eigensolver
    Takayasu A.; Imakura A.; Morikuni Keiichi
    18th International Symposium on Scientific Computing, Computer Arithmetic, and Verified Numerical Computations, Tokyo, Japan/2018-09-10--2018-09-15
  • 一般化エルミート固有値問題の部分固有値計算における周回積分に基づく精度保証法の改良
    今倉 暁; 保國 惠一; 高安 亮紀
    日本応用数理学会 第15回研究部会連合発表会, つくば/2019-03-04--2019-03-05
  • Structure-Preserving Technique in the Block SS-Hankel Method for Solving Hermitian Generalized Eigenvalue Problems
    Imakura Akira; Futamura Yasunori; Sakurai Tetsuya
    12th International Conference on Parallel Processing and Applied Mathematics (PPAM)/2017-09-10--2017-09-13
  • Eigenspectrum Calculation of the O(a)-Improved Wilson-Dirac Operator in Lattice QCD Using the Sakurai-Sugiura Method
    Suno Hiroya; Nakamura Yoshifumi; Ishikawa Ken-Ichi; Kuram...
    2nd International Workshop on Eigenvalue Problems - Algorithms, Software and Applications in Petascale Computing (EPASA)/2015-09-14--2015-09-16
  • スペクトラル特徴量スケーリングの多クラス分類問題への拡張
    松田 萌望; 保國 惠一; 今倉 暁; 櫻井 鉄也
    日本応用数理学会2018年度年会, 名古屋/2018-09-03--2018-09-05
  • 一般化エルミート固有値問題の周回積分型精度保証付き部分固有値計算
    今倉 暁; 保國 惠一; 高安 亮紀
    日本応用数理学会2018年度年会, 名古屋/2018-09-03--2018-09-05
  • Symmetry-preserving of the Hankel-type Sakurai-Sugiura eigenvalue solver for large sparse Hermitian definite generalized eigenvalue problem
    Futamura Yasunori; Imakura Akira; Sakurai Tetsuya
    10th International Workshop on Parallel Matrix Algorithms and Applications (PMAA18)/2018-06-27--2018-06-29
  • Verified Partial Eigenvalue Computation for Generalized Hermitian Eigenproblems Using Contour Integrals
    今倉 暁 (Imakura A.); 保國 惠一 (Morikuni K.); 高安 亮紀 ...
    47th Numerical Analysis Symposium (2018)/2018-06-06--2018-06-08
Teaching
2019-10 -- 2019-12Computational AlgorithmsUniversity of Tsukuba.
2019-04 -- 2019-05Information Literacy (Exercises)University of Tsukuba.
2019-10 -- 2020-02Research in Computer ScienceUniversity of Tsukuba.
2019-04 -- 2019-08Research in Computer ScienceUniversity of Tsukuba.
2019-04 -- 2019-07Introduction to Numerical AnalysisUniversity of Tsukuba.
2019-10 -- 2020-02Seminar in Computer ScienceUniversity of Tsukuba.
2019-04 -- 2019-08Seminar in Computer ScienceUniversity of Tsukuba.
2019-04 -- 2019-08Computer Science Seminar AUniversity of Tsukuba.
2019-10 -- 2020-02Computer Science Seminar AUniversity of Tsukuba.
2019-10 -- 2019-12Computational Algorithm and SimulationUniversity of Tsukuba.
Professional activities
2016-04 -- (current)日本応用数理学会「行列・固有値問題の解法とその応用」研究部会 幹事
2014-04 -- (current)The Japan Society for Industrial and Applied MathematicsJSIAM Letters 幹事編集委員
2013-04 -- (current)The Japan Society for Industrial and Applied Mathematics「産業における応用数理」研究部会 運営委員
2012-08 -- (current)The Japan Society for Industrial and Applied Mathematics研究部会 若手の会 運営委員
2012-04 -- 2015-03The Japan Society for Industrial and Applied Mathematics学会誌「応用数理」編集委員

(Last updated: 2019-08-26)