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Imakura Akira

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Affiliation
Faculty of Engineering, Information and Systems
Official title
Assistant Professor
Birth date
1984-01
URL
Email
 
Research fields
High performance computing
Computational science
Research keywords
Eigenvalue problem
Linear system
Numerical Analysis
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
2013-04 -- (current)University 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
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.
  • 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
  • Spectral Feature Scaling Method for Multiclass Classification Problems
    松田 萌望 (Matsuda M.); 保國 惠一 (Morikuni K.); 今倉 暁 ...
    47th Numerical Analysis Symposium (2018)/2018-06-06--2018-06-08
  • Verified computation of partial eigenvalues using contour integrals
    Imakura K.; Morikuni K.; Takayasu A.
    SIAM Conference on Applied Linear Algebra (SIAM-ALA18)/2018-05-04--2018-05-08
  • Recent Advances on the Algorithm-based Fault Tolerance of the Sakurai-Sugiura Eigensolver
    Futamura Yasunori; Imakura AKira; Sakurai Tetsuya
    18th SIAM Conference on Parallel Processing for Scientific Computing (SIAM PP18)/2018-03-07--2018-03-10
  • Contour integral-based verified computing for partial eigenvalues
    Takayasu A.; Imakura A.; Morikuni Keiichi
    SIAM Conference on Parallel Processing for Scientific Computing (SIAM PP18), Tokyo, Japan/2018-03-07--2018-03-10
  • An improvement of the nonlinear semi-NMF based method by considering bias vectors and regularization for deep neural networks
    Arai Ryosuke; Imakura Akira; Sakurai Tetsuya
    2018 10th International Conference on Machine Learning and Computing (ICMLC 2018)/2018-02-26--2018-02-28
  • Efficient and Scalable Calculation of Complex Band Structure Using Sakurai-Sugiura Method
    Iwase Shigeru; Futamura Yasunori; Imakura Akira; Sakurai ...
    International Conference for High Performance Computing, Networking, Storage and Analysis (SC17)/2017-11-13--2017-11-16
  • Structure-preserving of 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 (PPAM2017)/2017-09-10--2017-09-13
  • A complex moment-based parallel eigensolver using the block communication-avoiding Arnoldi procedure
    Imakura Akira; Sakurai Tetsuya
    4th JCAHPC Seminar/2017-08-29--2017-08-29
  • Nonlinear Sakurai-Sugiura method for electronic transport calculation
    Sakurai Tetsuya; Futamura Yasunori; Imakura Akira; Iwase ...
    2017 Meeting of the International Linear Algebra Society/2017-07-24--2017-07-28
  • A real-valued method for improving efficiency of a contour integral eigenvalue solver
    Futamura Yasunori; Imakura Akira; Sakurai Tetsuya
    2017 Meeting of the International Linear Algebra Society/2017-07-24--2017-07-28
  • Nonlinear Sakurai-Sugiura method for complex band structure calculation on KNL cluster
    Sakurai Tetsuya; Futamura Yasunori; Imakura Akira; Shiger...
    The Platform for Advanced Scientific Compuging (PASC) Conference/2017-06-26--2017-06-28
  • A complex moment-based nonlinear parallel eigensolver using the block communication-avoiding Arnoldi procedure
    Imakura Akira; Sakurai Tetsuya
    Householder Symposium XX on Numerical Linear Algebra (HHXX)/2017-06-18--2017-06-23
  • 非線形非負行列因子分解に基づくディープニューラルネットワーク計算法
    今倉 暁; 櫻井 鉄也
    日本応用数理学会 第13回研究部会連合発表会/2017-03-06--2017-03-07
  • Applications of the Parallel Complex Moment-Based Eigensolver Package z-Pares to Large-Scale Scientific Computations
    futamura yasunori; Imakura Akira; Sakurai Tetsuya
    SIAM Conference on Computational Science and Engineering (CSE17)/2017-02-27--2017-03-03
  • Applications of the Parallel Complex Moment-Based Eigensolver Package z-Pares to Large-Scale Scientific Computations
    Yasunori Futamura; Imakura Akira; Sakurai Tetsuya
    2017 SIAM Conference on Computational Science and Engineering/2017-02-27--2017-03-03
  • Complex moment-based eigensolvers with hierarchical parallelism
    Imakura Akira; futamura yasunori; tetsuya sakurai
    International Workshop on Massively Parallel Programming for Quantum Chemistry and Physics 2017/2017-01-09--2017-01-10
  • 2つのKrylov 部分空間による複素モーメント型固有値解法の改良
    今倉 暁; 櫻井 鉄也
    RIMS研究集会:現象解明に向けた数値解析学の新展開II/2016-10-19--2016-10-21
  • Alternating Optimization Method Based on Nonnegative Matrix Factorizations for Deep Neural Networks
    Sakurai Tetsuya; Imakura Akira; Inoue Yuto; Futamura Yasu...
    23rd International Conference on Neural Information Processing (ICONIP)/2016-10-16--2016-10-21
  • 複素モーメント型並列固有値解法の耐障害性とその性能評価
    今倉 暁; 櫻井 鉄也
    日本応用数理学会 2016年度 年会/2016-09-12--2016-09-14
  • Complex moment-based eigensolver using two Krylov subspaces
    Imakura Akira; Sakurai Tetsuya
    Sapporo Summer HPC Seminar 2016/2016-8-22--2016-8-22
  • Block Krylov-type complex moment-based nonlinear eigensolver with hierarchical parallelism
    Imakura Akira; Sakurai Tetsuya
    9th International Workshop on Parallel Matrix Algorithms and Applications (PMAA)/2016-07-06--2016-07-08
  • Block Krylov-type complex moment-based nonlinear eigensolver with hierarchical parallelism
    Imakura Akira; Sakurai Tetsuya
    The 9th International Workshop on Parallel Matrix Algorithms and Applications (PMAA16)/2016-06-06--2016-06-08
  • Algorithm-Based Fault Tolerance of the Sakurai-Sugiura Method
    Imakura Akira; Sakurai Tetsuya
    SIAM Conference on Parallel Processing for Scientific Computing (SIAM PP16)/2016-04-12--2016-04-15
Teaching
2017-10 -- 2018-02Software and Computing Science Laboratory BUniversity of Tsukuba.
2017-10 -- 2017-12Computational Algorithm and SimulationUniversity of Tsukuba.
2017-10 -- 2018-02Research in Computer ScienceUniversity of Tsukuba.
2017-04 -- 2017-08Research in Computer ScienceUniversity of Tsukuba.
2017-10 -- 2018-02Computer Science Seminar BUniversity of Tsukuba.
2017-04 -- 2017-08Computer Science Seminar BUniversity of Tsukuba.
2017-10 -- 2018-02Computer Science Seminar AUniversity of Tsukuba.
2017-04 -- 2017-08Computer Science Seminar AUniversity of Tsukuba.
2017-10 -- 2017-12Computational AlgorithmsUniversity of Tsukuba.
2017-07 -- 2017-08Computer-based mathematics laboratoryUniversity 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: 2018-07-04)