IMAKURA Akira

Researcher's full information

Articles

• Contour integral method for obtaining the self-energy matrices of electrodes in electron transport calculations
  Iwase Shigeru; Futamura Yasunori; Imakura Akira; Sakur...
  PHYSICAL REVIEW B/97(19)/p.195449, 2018-05
• Contour integral method for evaluating leads' self-energy matrix and its applications to first-principles electron transport calculation
  岩瀬 滋; 二村 保徳; 今倉 暁; 櫻井 鉄也; 塚本 茂; 小野 倫也
  Meeting Abstracts of the Physical Society of Japan/73/pp.2680-2680, 2018
  
  CiNii
• Cost-efficient cutoff method for tensor renormalization group with randomized singular value decomposition
  Yamada Haruka; Imakura Akira; Sakurai Tetsuya
  JSIAM LETTERS/10/pp.61-64, 2018
  
  Tsukuba Repository
• Performance evaluation of the Sakurai-Sugiura method with a block Krylov subspace linear solver for large dense Hermitian-definite generalized eigenvalue problems
  Yano Takahiro; Futamura Yasunori; Imakura Akira; Sakurai ...
  JSIAM Letters/10/pp.77-80, 2018
  
  CiNii Tsukuba Repository
• Efficient and Scalable Calculation of Complex Band Structure using Sakurai-Sugiura Method
  Iwase Shigeru; Futamura Yasunori; Imakura Akira; Sakurai ...
  Proc. of The International Conference for High Performance Computing, Networking, Storage and Analysis (SC'17), 2017-11
• Accuracy improvement of the Shifted Block BiCGGR method for linear systems with multiple shifts and multiple right-hand sides
  Tadano Hiroto; Saito Shusaku; Imakura Akira
  Proceedings of International Workshop on Eigenvalue Problems: Algorithms; Software and Applications, in Petascale Computing (EPASA)/117/pp.171-185, 2017-10
• Improving backward stability of Sakurai-Sugiura method with balancing technique in polynomial eigenvalue problem
  Chen Hongjia; Imakura Akira; Sakurai Tetsuya
  Applications of Mathematics/62(4)/pp.357-375, 2017-08
• A real-valued block conjugate gradient type method for solving complex symmetric linear systems with multiple right-hand sides
  Futamura Yasunori; Yano Takahiro; Imakura Akira; Sakurai ...
  Applications of Mathematics/62(4)/pp.333-355, 2017-08
• Block Krylov-type complex moment-based eigensolvers for solving generalized eigenvalue problems
  Imakura Akira; Sakurai Tetsuya
  Numer. Alg./75(2)/pp.413-433, 2017-06
• Parallel implementation of the nonlinear semi-NMF based alternating optimization method for deep neural networks
  Imakura Akira; Inoue Yuto; Sakurai Tetsuya; Futamura Yas...
  Neural Processing Letters/47(3:::SI)/pp.815-827, 2017-05
• An error resilience strategy of a complex moment-based eigensolver
  Imakura Akira; Futamura Yasunori; Tetsuya Sakurai
  Proceedings of International Workshop on Eigenvalue Problems: Algorithms; Software and Applications, in Petascale Computing (EPASA), 2017-05
• Three-dimensional Boltzmann-Hydro Code for Core-collapse in Massive Stars. II. The Implementation of Moving-mesh for Neutron Star Kicks
  Nagakura Hiroki; Iwakami Wakana; Furusawa Shun; Sumiyo...
  ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES/229(2), 2017-04
• 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...
  Proceedings of International Workshop on Eigenvalue Problems: Algorithms; Software and Applications, in Petascale Computing (EPASA), 2017
• Core-Collapse Supernovae Explored by Multi-D Boltzmann Hydrodynamic Simulations
  Sumiyoshi Kohsuke; Nagakura Hiroki; Iwakami Wakana; Furus...
  Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016), 2017
• Improving the numerical stability of the Sakurai-Sugiura method for quadratic eigenvalue problems
  Chen Hongjia; Maeda Yasuyuki; Imakura Akira; Sakurai Tet...
  JSIAM Letters/9/pp.17-20, 2017-03
  
  CiNii Tsukuba Repository
• Relationships among contour integral-based methods for solving generalized eigenvalue problems
  Imakura Akira; Du Lei; Sakurai Tetsuya
  JAPAN JOURNAL OF INDUSTRIAL AND APPLIED MATHEMATICS/33(3)/pp.721-750, 2016-12
• Alternating optimization method based on nonnegative matrix factorizations for deep neural networks
  Sakurai Tetsuya; Imakura Akira; Inoue Yuto; Futamura Yas...
  Proceedings of the 23rd International Conference on Neural Information Processing (ICONIP 2016), LNCS 9950/pp.16-21, 2016-10
• Locally optimal and heavy ball GMRES methods
  Imakura Akira; Li Ren-Cang; Zhang Shao-Liang
  JAPAN JOURNAL OF INDUSTRIAL AND APPLIED MATHEMATICS/33(2)/pp.471-499, 2016-07
• Eigenspectrum Calculation of the Non-Hermitian O(a)-Improved Wilson-Dirac Operator using the Sakurai-Sugiura Method
  Kuramashi Yoshinobu; Suno Hiroya; Nakamura Yoshifumi; Ishika...
  Proceedings of Science/LATTICE 2015/p.026, 2016-06
• Development of the Shifted Block BiCGSTAB(l) Method and Improvement of Its Accuracy
  齋藤 周作; 多田野 寛人; 今倉 暁
  Transactions of the Japan Society for Industrial and Applied Mathematics/26(3)/pp.318-352, 2016
  
  CiNii
• 19aAB-10 2D neutrino-radiation hydrodynamics simulations of core-collapse supernovae by solving 6D Boltzmann equations
  長倉 洋樹; 岩上 わかな; 住吉 光介; 古澤 峻; 松古 栄夫; 今倉 暁; 山田 章一
  日本物理学会講演概要集/71(1)/p.168, 2016-03
  
  CiNii
• Recovering from accuracy deterioration in the contour integral-based eigensolver
  Tetsuya Hasegawa; Imakura Akira; Tetsuya Sakurai
  JSIAM Letters/8/pp.1-4, 2016-02
• Error bounds of Rayleigh-Ritz type contour integral-based eigensolver for solving generalized eigenvalue problems
  Imakura Akira; Du Lei; Sakurai Tetsuya
  Numerical Algorithms/71(1)/pp.103-120, 2016-01
• A map of contour integral-based eigensolvers for solving generalized eigenvalue problems (Numerical Analysis Leading a New Age of Science and Technology)
  今倉 暁; 杜 磊; 櫻井 鉄也
  RIMS Kokyuroku/1957/pp.142-154, 2015-07
  
  CiNii
• Filter analysis for the stochastic estimation of eigenvalue counts
  Maeda Yasuyuki; Futamura Yasunori; Imakura Akira; Sakurai Te...
  JSIAM Letters/7(0)/pp.53-56, 2015-07
  
  CiNii
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