Imakura Akira 今倉暁

Researcher Number	60610045
Other IDs	https://orcid.org/0000-0003-4994-2499
Affiliation (Current)	2024: 筑波大学, システム情報系, 准教授
Affiliation (based on the past Project Information) *help	2018 – 2024: 筑波大学, システム情報系, 准教授 2013 – 2017: 筑波大学, システム情報系, 助教
Review Section/Research Field	Principal Investigator High performance computing / Basic Section 60100:Computational science-related / Medium-sized Section 60:Information science, computer engineering, and related fields Except Principal Investigator Medium-sized Section 60:Information science, computer engineering, and related fields / Basic Section 60100:Computational science-related / Basic Section 07100:Accounting-related / Sections That Are Subject to Joint Review: Basic Section12030:Basic mathematics-related , Basic Section12040:Applied mathematics and statistics-related / Basic Section 12030:Basic mathematics-related / Basic Section 12040:Applied mathematics and statistics-related / Computational science
Keywords	Principal Investigator 数値解析 / 高性能計算 / 複素モーメント型固有値解法 / リスク回避技術 / 複素モーメント型解法 / 無限次元固有値問題 / AI技術 / 複素モーメント技術 / 耐障害技術 / 前処理技術 / 反復法 / 大規模連立一次方程式 … More Except Principal Investigator … More 機械学習 / 固有値解析 / 高性能計算 / 分散データ解析 / 潜在空間 / 制約条件 / テキスト分析 / 財務諸表分析 / 仕訳データ解析 / 疑似データ / データコラボレーション / アカウンティング・インフォマティクス / 会計情報システム / 管理会計 / データ解析 / 会計情報科学 / 数値代数 / 精度保証 / 数値解析 / 数値計算アルゴリズム / アクセラレータ / 線形ソルバ / 計算工学 / 計算科学 / 特異値分解 / 固有値問題 / 行列計算 / 非負行列分解 / 誤差解析 / 収束性解析 / ブロックヤコビ法 / 並列計算 / 固有値計算 / 非線形変数変換 / 非線形変換 / 積分型固有値解法 / 非線型固有値問題 / 基盤ソフトウェア / 非線形固有値問題 / 大規模計算 / アルゴリズム Less

Development of a Foundation for Numerical Operator Algebras and its Applications
- Principal Investigator
  
  保國惠一
- Project Period (FY)
  2024 – 2028
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 12040:Applied mathematics and statistics-related
  Basic Section 12030:Basic mathematics-related
  Sections That Are Subject to Joint Review: Basic Section12030:Basic mathematics-related , Basic Section12040:Applied mathematics and statistics-related
- Research Institution
  University of Tsukuba
Next-generation high-performance linear solver for future computational science and engineering
- Principal Investigator
  
  岩下武史
- Project Period (FY)
  2023 – 2026
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 60:Information science, computer engineering, and related fields
- Research Institution
  Kyoto University
  Hokkaido University
制約付き固有値問題に基づく局所潜在空間生成とその大規模分散データ解析への応用
- Principal Investigator
  
  櫻井鉄也
- Project Period (FY)
  2023 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 60100:Computational science-related
- Research Institution
  University of Tsukuba
Development of highly reliable AI technologies based on complex moment-based techniquesPrincipal Investigator
- Principal Investigator
  
  今倉暁
- Project Period (FY)
  2022 – 2024
- Research Category
  
  Grant-in-Aid for Challenging Research (Exploratory)
- Review Section
  
  Medium-sized Section 60:Information science, computer engineering, and related fields
- Research Institution
  University of Tsukuba
Scientific Research of Accounting Informatics
- Principal Investigator
  
  岡田幸彦
- Project Period (FY)
  2022 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 07100:Accounting-related
- Research Institution
  University of Tsukuba
Development of complex moment-based methods and mathematical risk avoidance techniques for infinite dimensional eigenvalue problemsPrincipal Investigator
- Principal Investigator
  
  今倉暁
- Project Period (FY)
  2021 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 60100:Computational science-related
- Research Institution
  University of Tsukuba
高いスケーリング性能と高精度性を併せ持つ次世代固有値・特異値分解ライブラリの開発
- Principal Investigator
  
  山本有作
- Project Period (FY)
  2019 – 2023
- Research Category
  
  Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
- Review Section
  
  Medium-sized Section 60:Information science, computer engineering, and related fields
- Research Institution
  The University of Electro-Communications
Development of eigenvalue analysis methods using a quadrature-type eigensolver with nonlinear transformations
- Principal Investigator
  
  Sakurai Tetsuya
- Project Period (FY)
  2018 – 2020
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 60100:Computational science-related
- Research Institution
  University of Tsukuba
Development of error resilience technology for complex moment-based parallel eigensolversPrincipal Investigator
- Principal Investigator
  
  Imakura Akira
- Project Period (FY)
  2017 – 2021
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  High performance computing
- Research Institution
  University of Tsukuba
Development of an advanced method for nonlinear eigenvalue problems and its applications
- Principal Investigator
  
  SAKURAI Tetsuya
- Project Period (FY)
  2013 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Computational science
- Research Institution
  University of Tsukuba
Developments of iterative-type preconditioning techniques for large linear systems and their applicationPrincipal Investigator
- Principal Investigator
  
  Imakura Akira
- Project Period (FY)
  2013 – 2015
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  High performance computing
- Research Institution
  University of Tsukuba

All 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 Other

All Journal Article Presentation Book

[Book] 数値線形代数の数理とHPC2018
- Author(s)
  山本有作, 多田野寛人, 今倉暁, 相島健助, 宮田考史, 櫻井鉄也, 中村佳正, 保國惠一, 曽我部知広, 中島研吾, 深谷猛, 二村保徳, 大島聡史
- Total Pages
  336
- Publisher
  共立出版
- ISBN
  9784320019553
- Data Source
  KAKENHI-PROJECT-17K12690
[Journal Article] DC-COX: data collaboration Cox proportional hazards model for privacy-preserving survival analysis on multiple parties.2023
- Author(s)
  Akira Imakura, Ryoya Tsunoda, Rina Kagawa, Kunihiro Yamagata, Tetsuya Sakurai
- Journal Title
  
  Journal of Biomedical Informatics
  
  Volume: 137 Pages: 104264-104264
- DOI
  10.1016/j.jbi.2022.104264
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K19347, KAKENHI-PROJECT-23K22166
[Journal Article] Complex moment-based eigensolver coupled with two Krylov subspaces2023
- Author(s)
  Imakura Akira、Sakurai Tetsuya
- Journal Title
  
  Journal of Computational and Applied Mathematics
  
  Volume: 432 Pages: 115283-115283
- DOI
  10.1016/j.cam.2023.115283
- Data Source
  KAKENHI-PROJECT-19KK0255
[Journal Article] Verified eigenvalue and eigenvector computations using complex moments and the Rayleigh?Ritz procedure for generalized Hermitian eigenvalue problems2023
- Author(s)
  Imakura Akira、Morikuni Keiichi、Takayasu Akitoshi
- Journal Title
  
  Journal of Computational and Applied Mathematics
  
  Volume: 424 Pages: 114994-114994
- DOI
  10.1016/j.cam.2022.114994
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19KK0255, KAKENHI-PROJECT-23K20813, KAKENHI-PROJECT-23K21673
[Journal Article] リレーションシップバンキング機能の向上を目的とした中小企業の資金ニーズ判別法とその活用の提案2023
- Author(s)
  罇涼稀・竹田俊彦・今倉暁・櫻井鉄也・岡田幸彦
- Journal Title
  
  Department of Policy and Planning Sciences Discussion Paper Series
  
  Volume: 1385 Pages: 1-31
- Open Access
- Data Source
  KAKENHI-PROJECT-23K22166
[Journal Article] Non-readily identifiable data collaboration analysis for multiple datasets including personal information2022
- Author(s)
  A. Imakura, T. Sakurai, Y. Okada, T. Fujii, T. Sakamoto, and H. Abe
- Journal Title
  
  arXiv
  
  Volume: 2208.14611 Pages: 1-19
- Open Access
- Data Source
  KAKENHI-PROJECT-23K22166
[Journal Article] Sequential reinforcement active feature learning for gene signature identification in renal cell carcinoma2022
- Author(s)
  Meng Huang, Xiucai Ye, Akira Imakura, Tetsuya Sakurai
- Journal Title
  
  Journal of Biomedical Informatics
  
  Volume: 128 Pages: 104049-104049
- DOI
  10.1016/j.jbi.2022.104049
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K12690, KAKENHI-PROJECT-22K12144
[Journal Article] Flexible subspace iteration with moments for an effective contour integration‐based eigensolver2022
- Author(s)
  Huber Sarah、Futamura Yasunori、Galgon Martin、Imakura Akira、Lang Bruno、Sakurai Tetsuya
- Journal Title
  
  Numerical Linear Algebra with Applications
  
  Volume: online first Issue: 6 Pages: 1-14
- DOI
  10.1002/nla.2447
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K20280, KAKENHI-PROJECT-18H03250
[Journal Article] Collaborative causal inference on distributed data2022
- Author(s)
  Y. Kawamata, R. Motai, Y. Okada, A. Imakura, and T. Sakurai
- Journal Title
  
  arXiv
  
  Volume: 2208.07898 Pages: 1-13
- Open Access
- Data Source
  KAKENHI-PROJECT-23K22166
[Journal Article] Another Use of SMOTE for Interpretable Data Collaboration Analysis2022
- Author(s)
  A. Imakura, M. Kihira, Y. Okada, and T. Sakurai
- Journal Title
  
  arXiv
  
  Volume: 2208.12458 Pages: 1-19
- Open Access
- Data Source
  KAKENHI-PROJECT-23K22166
[Journal Article] Cross-interactive residual smoothing for global and block Lanczos-type solvers for linear systems with multiple right-hand sides2022
- Author(s)
  Kensuke Aihara, Akira Imakura, Keiichi Morikuni
- Journal Title
  
  SIAM Journal on Matrix Analysis and Applications
  
  Volume: 43 Issue: 3 Pages: 1308-1330
- DOI
  10.1137/21m1436774
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-21K11925, KAKENHI-PROJECT-20K14356, KAKENHI-PROJECT-19KK0255, KAKENHI-PROJECT-23K21673
[Journal Article] Application of data collaboration analysis to distributed data with misaligned features2022
- Author(s)
  A. Mizoguchi, A. Imakura, and T. Sakurai
- Journal Title
  
  Informatics in Medicine Unlocked
  
  Volume: 32 Pages: 1-9
- DOI
  10.1016/j.imu.2022.101013
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23K22166
[Journal Article] 財務諸表データを用いた資金ニーズの見過ごしチェック AI の開発2022
- Author(s)
  罇涼稀・秦涼太・今倉暁・櫻井鉄也・岡田幸彦
- Journal Title
  
  Department of Policy and Planning Sciences Discussion Paper Series
  
  Volume: 1383 Pages: 1-23
- Open Access
- Data Source
  KAKENHI-PROJECT-23K22166
[Journal Article] Complex moment-based methods for differential eigenvalue problems2022
- Author(s)
  Imakura Akira、Morikuni Keiichi、Takayasu Akitoshi
- Journal Title
  
  Numerical Algorithms
  
  Volume: 92 Issue: 1 Pages: 693-721
- DOI
  10.1007/s11075-022-01456-y
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-22K03411, KAKENHI-PROJECT-20K14356, KAKENHI-PROJECT-19KK0255, KAKENHI-PROJECT-18K13453, KAKENHI-PROJECT-23K20813, KAKENHI-PROJECT-23K21673
[Journal Article] Efficient Implementation of a Dimensionality Reduction Method Using a Complex Moment-Based Subspace2021
- Author(s)
  Takahiro Yano, Yasunori Futamura, Akira Imakura, Tetsuya Sakurai
- Journal Title
  
  In: Proceedings of HPC Asia 2021: The International Conference on High Performance Computing in Asia-Pacific Region
  
  Volume: 1 Pages: 83-89
- DOI
  10.1145/3432261.3432267
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K12690, KAKENHI-PROJECT-19K20280, KAKENHI-PROJECT-18H03250
[Journal Article] Interpretable collaborative data analysis on distributed data2021
- Author(s)
  Akira Imakura, Hiroaki Inaba, Yukihiko Okada, Tetsuya Sakurai,
- Journal Title
  
  Expert Systems with Applications
  
  Volume: 177 Pages: 114891-114891
- DOI
  10.1016/j.eswa.2021.114891
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K12690, KAKENHI-PROJECT-19KK0255
[Journal Article] An improvement of multigrid methods using multiple grids on each layer for parallel computing2021
- Author(s)
  Akira Imakura
- Journal Title
  
  Journal of Mathematical Research with Applications
  
  Volume: 41 Pages: 87-98
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K12690
[Journal Article] Accelerating the Backpropagation algorithm by Using the NMF-based method on Deep Neural Networks2021
- Author(s)
  Suhyeon Baek, Akira Imakura, Tetsuya Sakurai, Ichiro Kataoka
- Journal Title
  
  In: Uehara H., Yamaguchi T., Bai Q. (eds) Knowledge Management and Acquisition for Intelligent Systems. PKAW 2021. Lecture Notes in Computer Science
  
  Volume: 12280 Pages: 1-3
- DOI
  10.1007/978-3-030-69886-7_1
- ISBN
  9783030698850, 9783030698867
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K12690
[Journal Article] LSEC: Large-scale spectral ensemble clustering2021
- Author(s)
  Hongmin Li, Xiucai Ye, Akira Imakura, Tetsuya Sakurai
- Journal Title
  
  Intelligent Data Analysis
  
  Volume: －
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K12690
[Journal Article] Collaborative Novelty Detection for Distributed Data by a Probabilistic Method2021
- Author(s)
  Akira Imakura, Xiucai Ye, Tetsuya Sakurai
- Journal Title
  
  Proceedings of Machine Learning Research
  
  Volume: 157 Pages: 932-947
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19KK0255
[Journal Article] Efficient variants of the CMRH method for solving a sequence of multi-shifted non-Hermitian linear systems simultaneously2020
- Author(s)
  Xian-Ming Gu, Ting-Zhu Huang, Bruno Carpentieri, Akira Imakura, Ke Zhang, Lei Du
- Journal Title
  
  Journal of Computational and Applied Mathematics
  
  Volume: 375 Pages: 112788-112788
- DOI
  10.1016/j.cam.2020.112788
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Journal Article] ESSEX: Equipping Sparse Solvers For Exascale,2020
- Author(s)
  Christie L. Alappat, Andreas Alvermann, Achim Basermann, Holger Fehske, Yasunori Futamura, Martin Galgon, Georg Hager, Sarah Huber, Akira Imakura, Masatoshi Kawai, Moritz Kreutzer, Bruno Lang, Kengo Nakajima, Melven Rohrig-Zollner, Tetsuya Sakurai, Faisal Shahzad, Jonas Thies, Gerhard Wellein,
- Journal Title
  
  In: Bungartz HJ., Reiz S., Uekermann B., Neumann P., Nagel W. (eds), Software for Exascale Computing - SPPEXA 2016-2019, Lecture Notes in Computational Science and Engineering
  
  Volume: 136 Pages: 143-187
- DOI
  10.1007/978-3-030-47956-5_7
- ISBN
  9783030479558, 9783030479565
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Journal Article] Verified partial eigenvalue computations using contour integrals for Hermitian generalized eigenproblems2020
- Author(s)
  Akira Imakura, Keiichi Morikuni, Akitoshi Takayasu
- Journal Title
  
  Journal of Computational and Applied Mathematics
  
  Volume: 369 Pages: 112543-112543
- DOI
  10.1016/j.cam.2019.112543
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K12690, KAKENHI-PROJECT-18K13453, KAKENHI-PROJECT-16K17639
[Journal Article] Polynomial Preconditioner for Linear Systems with Multiple Right-Hand Sides and Multiple Shifts2019
- Author(s)
  関川悠太, 二村保徳, 今倉暁, 櫻井鉄也
- Journal Title
  
  Transactions of the Japan Society for Industrial and Applied Mathematics
  
  Volume: 29 Issue: 1 Pages: 141-164
- DOI
  10.11540/jsiamt.29.1_141
- NAID
  130007618976
- ISSN
  2424-0982
- Language
  Japanese
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K12690, KAKENHI-PROJECT-18H03250
[Journal Article] Scalable Eigen-analysis engine for large-scale eigenvalue problems.2019
- Author(s)
  T. Sakurai, Y. Futamura, A. Imakura, T. Imamura
- Journal Title
  
  Advanced Software Technologies for Post-Peta Scale Computing
  
  Volume: 24 Issue: 6 Pages: 37-57
- DOI
  10.3233/ida-194942
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18H03250, KAKENHI-PROJECT-16K17639
[Journal Article] Efficient implementations of the modified Gram?Schmidt orthogonalization with a non-standard inner product2019
- Author(s)
  Imakura Akira、Yamamoto Yusaku
- Journal Title
  
  Japan Journal of Industrial and Applied Mathematics
  
  Volume: 36 Issue: 2 Pages: 619-641
- DOI
  10.1007/s13160-019-00356-4
- NAID
  210000183505
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K19966, KAKENHI-PROJECT-17K12690, KAKENHI-PROJECT-19KK0255
[Journal Article] Distributed Collaborative Feature Selection Based on Intermediate Representation.2019
- Author(s)
  X. Ye, H. Li, A. Imakura and T. Sakurai
- Journal Title
  
  Proceedings of the 28th International Joint Conference on Artificial Intelligence (IJCAI-19),Macao
  
  Volume: 28 Pages: 4142-4149
- DOI
  10.24963/ijcai.2019/575
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18H03250
[Journal Article] Minimal residual-like condition with collinearity for shifted Krylov subspace methods2019
- Author(s)
  Akira Imakura
- Journal Title
  
  Japan Journal of Industrial and Applied Mathematics
  
  Volume: 36 Issue: 2 Pages: 643-661
- DOI
  10.1007/s13160-019-00357-3
- NAID
  210000175982
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K12690
[Journal Article] Complex Moment-Based Supervised Eigenmap for Dimensionality Reduction2019
- Author(s)
  Akira Imakura, Momo Matsuda, Xiucai Ye, Tetsuya Sakurai
- Journal Title
  
  Proceedings of the AAAI Conference on Artificial Intelligence
  
  Volume: 33 Issue: 01 Pages: 3910-3918
- DOI
  10.1609/aaai.v33i01.33013910
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K12690, KAKENHI-PROJECT-18H03250
[Journal Article] Scalable Eigen-analysis engine for large-scale eigenvalue problems2019
- Author(s)
  T. Sakurai, Y. Futamura, A. Imakura, T. Imamura
- Journal Title
  
  Advanced Software Technologies for Post-Peta Scale Computing
  
  Volume: 1巻 Pages: 37-57
- DOI
  10.1007/978-981-13-1924-2_3
- ISBN
  9789811319235, 9789811319242
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18H03250
[Journal Article] Simultaneous Band Reduction of Two Symmetric Matrices2019
- Author(s)
  Lei Du, Akira Imakura, Tetsuya Sakurai
- Journal Title
  
  Computers and Mathematics with Applications
  
  Volume: 77 Issue: 8 Pages: 2207-2220
- DOI
  10.1016/j.camwa.2018.12.003
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690, KAKENHI-PROJECT-18H03250
[Journal Article] Block SS--CAA: A complex moment-based parallel nonlinear eigensolver using the block communication-avoiding Arnoldi procedure2018
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Journal Title
  
  Parallel Computing
  
  Volume: 74 Pages: 34-48
- DOI
  10.1016/j.parco.2017.11.007
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K12690, KAKENHI-PROJECT-18H03250
[Journal Article] A Look-Back-Type Restart for the Restarted Krylov Subspace Methods for Solving Non-Hermitian Linear Systems2018
- Author(s)
  Akira Imakura, Tomohiro Sogabe, Shao-Liang Zhang
- Journal Title
  
  Japan Journal of Industrial and Applied Mathematics
  
  Volume: 35 Issue: 2 Pages: 835-859
- DOI
  10.1007/s13160-018-0308-x
- NAID
  210000180023
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K12690
[Journal Article] 高次元データのスペクトラルクラス分類における特徴量スケーリング2018
- Author(s)
  松田萌望、保國惠一、今倉暁、櫻井鉄也
- Journal Title
  
  信学技報, IBISML2018-2
  
  Volume: 118巻 no81 Pages: 9-14
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18H03250
[Journal Article] An improvement of the nonlinear semi-NMF based method by considering bias vectors and regularization for deep neural networks2018
- Author(s)
  R. Arai, A. Imakura, T. Sakurai
- Journal Title
  
  International J. Machine Learning and Comput
  
  Volume: 8巻 Issue: 3 Pages: 191-197
- DOI
  10.18178/ijmlc.2018.8.3.686
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18H03250
[Journal Article] Performance evaluation of the Sakurai-Sugiura method with a block Krylov subspace linear solver for large dense Hermitian-definite generalized eigenvalue problems2018
- Author(s)
  Takahiro Yano, Yasunori Futamura, Akira Imakura, Tetsuya Sakurai
- Journal Title
  
  JSIAM Letters
  
  Volume: 10 Issue: 0 Pages: 77-80
- DOI
  10.14495/jsiaml.10.77
- NAID
  130007550465
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K12690, KAKENHI-PROJECT-18H03250
[Journal Article] Contour integral method for obtaining the self-energy matrices of electrodes in electron transport calculations2018
- Author(s)
  Shigeru Iwase, Yasunori Futamura, Akira Imakura, Tetsuya Sakurai, Shigeru Tsukamoto, Tomoya Ono
- Journal Title
  
  PHYSICAL REVIEW B
  
  Volume: ９７ Issue: 19 Pages: 195449-195449
- DOI
  10.1103/physrevb.97.195449
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K12690, KAKENHI-PROJECT-16J00911
[Journal Article] Improving backward stability of Sakurai-Sugiura method with balancing technique in polynomial eigenvalue problem2017
- Author(s)
  Hongjia Chen, Akira Imakura, Tetsuya Sakurai
- Journal Title
  
  Applications of Mathematics
  
  Volume: 62 Issue: 4 Pages: 357-375
- DOI
  10.21136/am.2017.0016-17
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K12690
[Journal Article] An Error Resilience Strategy of a Complex Moment-Based Eigensolver2017
- Author(s)
  Akira Imakura, Yasunori Futamura, Tetsuya Sakurai
- Journal Title
  
  Eigenvalue Problems: Algorithms, Software and Applications in Petascale Computing. EPASA 2015. Lecture Notes in Computational Science and Engineering
  
  Volume: 117 Pages: 1-28
- DOI
  10.1007/978-3-319-62426-6_1
- ISBN
  9783319624242, 9783319624266
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K12690
[Journal Article] A real-valued block conjugate gradient type method for solving complex symmetric linear systems with multiple right-hand sides2017
- Author(s)
  Yasunori Futamura, Takahiro Yano, Akira Imakura, Tetsuya Sakurai
- Journal Title
  
  Applications of Mathematics
  
  Volume: 62 Issue: 4 Pages: 333-355
- DOI
  10.21136/am.2017.0023-17
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K12690, KAKENHI-PROJECT-16J02020
[Journal Article] Improving the numerical stability of the Sakurai-Sugiura method for quadratic eigenvalue problems2017
- Author(s)
  Hongjia Chen, Yasuyuki Maeda, Akira Imakura, Tetsuya Sakurai, Francoise Tisseur
- Journal Title
  
  JSIAM Letters
  
  Volume: 9 Pages: 17-20
- NAID
  130005475943
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25286097
[Journal Article] Block Krylov-type complex moment-based eigensolvers for solving generalized eigenvalue problems2017
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Journal Title
  
  Numerical Algorithms
  
  Volume: 75 Issue: 2 Pages: 413-433
- DOI
  10.1007/s11075-016-0241-5
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K12690
[Journal Article] Improving the numerical stability of the Sakurai-Sugiura method for quadratic eigenvalue problems2017
- Author(s)
  Hongjia Chen, Yasuyuki Maeda, Akira Imakura, Tetsuya Sakurai, Francoise Tisseur
- Journal Title
  
  JSIAM Letters
  
  Volume: 9 Issue: 0 Pages: 17-20
- DOI
  10.14495/jsiaml.9.17
- NAID
  130005475943
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Journal Article] Recovering from accuracy deterioration in the contour integral-based eigensolver2016
- Author(s)
  Tetsuya Hasegawa, Akira Imakura, Tetsuya Sakurai
- Journal Title
  
  JSIAM Letters
  
  Volume: 8 Issue: 0 Pages: 1-4
- DOI
  10.14495/jsiaml.8.1
- NAID
  130005125234
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-25870099, KAKENHI-PROJECT-25286097
[Journal Article] Error bounds of Rayleigh--Ritz type contour integral-based eigensolver for solving generalized eigenvalue problems2016
- Author(s)
  Akira Imakura, Lei Du, Tetsuya Sakurai
- Journal Title
  
  Numerical Algorithms
  
  Volume: 71 Pages: 103-120
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25870099
[Journal Article] Relationships among contour integral-based methods for solving generalized eigenvalue problems2016
- Author(s)
  A. Imakura, L. Du and T. Sakurai,
- Journal Title
  
  Japan J. Indust. Appl. Math.
  
  Volume: 33 Issue: 3 Pages: 721-750
- DOI
  10.1007/s13160-016-0224-x
- NAID
  210000183673
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25286097
[Journal Article] Error bounds of Rayleigh--Ritz type contour integral-based eigensolver for solving generalized eigenvalue problems2016
- Author(s)
  Akira Imakura, Lei Du, Tetsuya Sakurai
- Journal Title
  
  Numerical Algorithms
  
  Volume: 71 Pages: 103-120
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25286097
[Journal Article] Filter analysis for the stochastic estimation of eigenvalue counts2015
- Author(s)
  Yasuyuki Maeda, Yasunori Futamura, Akira Imakura, Tetsuya Sakurai
- Journal Title
  
  JSIAM Letters
  
  Volume: 7 Issue: 0 Pages: 53-56
- DOI
  10.14495/jsiaml.7.53
- NAID
  130005087644
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-25870099, KAKENHI-PROJECT-25286097
[Journal Article] Improving the convergence behaviour of BiCGSTAB by applying <i>D</i>-norm minimization2015
- Author(s)
  Lijiong Su, Akira Imakura, Hiroto Tadano, Tetsuya Sakurai
- Journal Title
  
  JSIAM Letters
  
  Volume: 7 Issue: 0 Pages: 37-40
- DOI
  10.14495/jsiaml.7.37
- NAID
  130005068708
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-15K15996, KAKENHI-PROJECT-25870099, KAKENHI-PROJECT-25286097
[Journal Article] A block Arnoldi-type contour integral spectral projection method for solving generalized eigenvalue problems2014
- Author(s)
  Akira Imakura, Lei Du, Tetsuya Sakurai
- Journal Title
  
  Applied Mathematics Letters
  
  Volume: 32 Pages: 22-27
- DOI
  10.1016/j.aml.2014.02.007
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PUBLICLY-25104701, KAKENHI-PROJECT-25286097, KAKENHI-PROJECT-25870099
[Journal Article] Development of the Block BiCGSTAB($\ell$) method for solving linear systems with multiple right hand sides2014
- Author(s)
  S. Saito, H. Tadano, and A. Imakura
- Journal Title
  
  JSIAM Letters
  
  Volume: 6 Issue: 0 Pages: 65-68
- DOI
  10.14495/jsiaml.6.65
- NAID
  130004706458
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PLANNED-22104003, KAKENHI-PUBLICLY-25104701, KAKENHI-PROJECT-25870099
[Journal Article] An efficient algorithm to construct an orthonormal basis for the extended Krylov subspace2014
- Author(s)
  Akira Imakura
- Journal Title
  
  East Asian Journal on Applied Mathematics
  
  Volume: 4 Issue: 3 Pages: 267-282
- DOI
  10.4208/eajam.240413.020614a
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25286097, KAKENHI-PROJECT-25870099
[Journal Article] Improvement of the accuracy of the approximate solution of the Block BiCR method2014
- Author(s)
  H. Tadano, Y. Ishikawa, and A. Imakura
- Journal Title
  
  JSIAM Letters
  
  Volume: 6 Issue: 0 Pages: 61-64
- DOI
  10.14495/jsiaml.6.61
- NAID
  130004706457
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PLANNED-22104003, KAKENHI-PUBLICLY-25104701, KAKENHI-PROJECT-25286097, KAKENHI-PROJECT-25870099
[Journal Article] A Weighted Block GMRES method for solving linear systems with multiple right-hand sides2013
- Author(s)
  Akira IMAKURA, Lei DU, Hiroto TADANO
- Journal Title
  
  JSIAM Letters
  
  Volume: 5 Issue: 0 Pages: 65-68
- DOI
  10.14495/jsiaml.5.65
- NAID
  130003385510
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-25104701, KAKENHI-PROJECT-25870099
[Journal Article] 重み付き定常反復型前処理のためのパラメータ最適化手法および超新星爆発計算における有効性2013
- Author(s)
  今倉暁, 櫻井鉄也, 住吉光介, 松古栄夫
- Journal Title
  
  京都大学数理解析研究所講究録
  
  Volume: 1848 Pages: 15-24
- Data Source
  KAKENHI-PROJECT-25870099
[Journal Article] An Efficient Variant of the Restarted Shifted GMRES Method for Solving Shifted Linear Systems2013
- Author(s)
  Akira IMAKURA, Tomohiro SOGABE and Shao-Liang ZHANG
- Journal Title
  
  Journal of Mathematical Research with Applications
  
  Volume: 33 Pages: 127-141
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25870099
[Journal Article] 残差最小性に基づくKrylov部分空間反復法に対する疎行列用直接解法を用いた前処理のパラメータ推定2013
- Author(s)
  山崎育朗, 今倉暁, 多田野寛人, 櫻井鉄也
- Journal Title
  
  日本応用数理学会論文誌
  
  Volume: 23 Pages: 381-404
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Collaborative Future Selection for Distributed Data2023
- Author(s)
  Xiucai Ye, Akira Imakura, Tetsuya Sakurai
- Organizer
  SIAM Conference on Computational Science and Engineering (CSE23)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K19767
[Presentation] データコラボレーション解析手法に対する精度解析および生存時間分析への応用2023
- Author(s)
  今倉暁, 角田亮也, 香川璃奈, 山縣邦弘, 櫻井鉄也
- Organizer
  日本応用数理学会 2023年研究部会連合発表会
- Data Source
  KAKENHI-PROJECT-22K19767
[Presentation] Cost-Efficient Integrated Analysis of Distributed Data in Secure Environments2023
- Author(s)
  Tetsuya Sakurai, Akira Imakura, Xiucai Ye, Anna Bogdanova, Yasunori Futamura, Yukihiko Okada
- Organizer
  SIAM Conference on Computational Science and Engineering (CSE23)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K19767
[Presentation] ブロックLanczos型反復法の精度改善に向けた相互作用型残差スムージング2023
- Author(s)
  相原研輔，今倉暁，保國惠一
- Organizer
  日本応用数理学会 2023年研究部会連合発表会
- Data Source
  KAKENHI-PROJECT-23K21673
[Presentation] 分散文章データ統合解析のためのデータコラボレーション文章解析2023
- Author(s)
  関口拓海・今倉暁・櫻井鉄也
- Organizer
  言語処理学会第29回年次大会(NLP2023)
- Data Source
  KAKENHI-PROJECT-23K22166
[Presentation] 分散文章データ統合解析のためのデータコラボレーション文章解析2023
- Author(s)
  関口拓海, 今倉暁, 櫻井鉄也
- Organizer
  言語処理学会第29回年次大会(NLP2023)
- Data Source
  KAKENHI-PROJECT-22K19767
[Presentation] Complex moment-based method with nonlinear transformation for computing partial singular triplets, Numerical Methods for Large Scale Problems2022
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Organizer
  Numerical Methods for Large Scale Problems 2022
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19KK0255
[Presentation] 線形非正方行列束の固有値問題に対する射影法2022
- Author(s)
  保國惠一, 今倉暁
- Organizer
  RIMS研究集会「数値解析が拓く次世代情報社会～エッジから富岳まで～」
- Data Source
  KAKENHI-PROJECT-23K21673
[Presentation] 無限次元固有値問題に対する複素モーメント型解法とその性能評価2022
- Author(s)
  今倉暁, 保國惠一, 高安亮紀
- Organizer
  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　第34回単独研究会
- Data Source
  KAKENHI-PROJECT-23K21673
[Presentation] 財務諸表データを学習した長期借入金増減の予測実験2022
- Author(s)
  岡田幸彦・罇涼稀・河又裕士・今倉暁・櫻井鉄也
- Organizer
  日本会計研究学会第81回全国大会
- Data Source
  KAKENHI-PROJECT-23K22166
[Presentation] 一般化エルミート固有値問題に対するRayleigh-Ritz版の周回積分型精度保証付き部分固有対計算2022
- Author(s)
  今倉暁, 保國惠一, 高安亮紀
- Organizer
  日本応用数理学会 2022年度年会
- Data Source
  KAKENHI-PROJECT-23K21673
[Presentation] 無限次元固有値問題に対する複素モーメント型解法2021
- Author(s)
  今倉暁, 保國惠一, 高安亮紀
- Organizer
  2021年並列／分散／協調処理に関するサマー・ワークショップ (SWoPP2021)
- Data Source
  KAKENHI-PROJECT-23K21673
[Presentation] Complex Moment-Based Methods for Differential Eigenvalue Problems2021
- Author(s)
  Akira Imakura, Keiichi Morikuni, Akitoshi Takayasu
- Organizer
  SIAM Conference on Applied Linear Algebra (SIAM-LA21)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Complex Moment-Based Methods for Differential Eigenvalue Problems2021
- Author(s)
  Akira Imakura, Keiichi Morikuni, Akitoshi Takayasu
- Organizer
  SIAM Conference on Applied Linear Algebra (SIAM-LA21)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K21673
[Presentation] On the Residual Gap of Block Lanczos-Type Methods and Its Remedy by Cross-Interactive Residual Smoothin2021
- Author(s)
  Kensuke Aihara, Akira Imakura, Keiichi Morikuni
- Organizer
  SIAM Conference on Applied Linear Algebra (SIAM-LA21)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Accelerating the Backpropagation algorithm by Using the NMF-based method on Deep Neural Networks2021
- Author(s)
  Suhyeon Baek, Akira Imakura, Tetsuya Sakurai, Ichiro Kataoka
- Organizer
  2020 Principle and Practice of Data and Knowledge Acquisition Workshop (PKAW2020)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Sylvester方程式に対するglobal Krylov部分空間法のresidual gap評価とその改善2021
- Author(s)
  相原研輔，今倉暁，保國惠一
- Organizer
  日本応用数理学会第17回研究部会連合発表会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 無限次元固有値問題に対する複素モーメント型解法2021
- Author(s)
  今倉暁, 保國惠一, 高安亮紀
- Organizer
  2021年並列／分散／協調処理に関するサマー・ワークショップ (SWoPP2021)
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Collaborative Novelty Detection for Distributed Data by a Probabilistic Method2021
- Author(s)
  Akira Imakura, Xiucai Ye, Tetsuya Sakurai,
- Organizer
  The 13th Asian Conference on Machine Learning (ACML 2021)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19KK0255
[Presentation] On the Residual Gap of Block Lanczos-Type Methods and Its Remedy by Cross-Interactive Residual Smoothing2021
- Author(s)
  Kensuke Aihara, Akira Imakura, Keiichi Morikuni
- Organizer
  SIAM Conference on Applied Linear Algebra (SIAM-LA21)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] Eigensolvers using complex moments for operators2021
- Author(s)
  Akira Imakura, Keiichi Morikuni, Akitoshi Takayasu
- Organizer
  Numerical Methods and Scientific Computing (NMSC21)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19KK0255
[Presentation] Eigensolvers using complex moments for operators2021
- Author(s)
  Akira Imakura, Keiichi Morikuni, Akitoshi Takayasu
- Organizer
  Numerical Methods and Scientific Computing (NMSC21)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K21673
[Presentation] Collaborative Novelty Detection for Distributed Data by a Probabilistic Method2021
- Author(s)
  Akira Imakura, Xiucai Ye, Tetsuya Sakurai
- Organizer
  The 13th Asian Conference on Machine Learning (ACML 2021)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 大規模数値シミュレーションの信頼性に対する各種リスクとその対策2021
- Author(s)
  今倉暁
- Organizer
  リスク工学研究会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Efficient Implementation of a Dimensionality Reduction Method Using a Complex Moment-Based Subspace2021
- Author(s)
  Takahiro Yano, Yasunori Futamura, Akira Imakura, Tetsuya Sakurai
- Organizer
  HPC Asia 2021
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Eigensolvers using complex moments for operators2021
- Author(s)
  Akira Imakura, Keiichi Morikuni, Akitoshi Takayasu
- Organizer
  Numerical Methods and Scientific Computing (NMSC21)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 複数右辺ベクトルを持つ線形方程式に対するblock generalized CGS法2021
- Author(s)
  今倉暁，相原研輔，保國惠一
- Organizer
  日本応用数理学会第17回研究部会連合発表会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Empirical Study of Non-Model Shared Data Collaboration Analysis Using Pseudo-data.2020
- Author(s)
  Nakai, Akie; Takahashi, Yuta; Imakura, Akira; Okada, Sakurai, Tetsuya
- Organizer
  サービス学会第8回国内大会
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] カーネルリッジ回帰へのBLR行列近似の適用法検討2020
- Author(s)
  伊田明弘, 今倉暁
- Organizer
  日本応用数理学会2020年度年会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] エルミート一般化固有値問題に対するBlock SS-Hankel法の固有ベクトル精度改善法2020
- Author(s)
  来栖壮馬, 今倉暁, 櫻井鉄也
- Organizer
  日本応用数理学会2020年度年会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 複素モーメント型部分特異値分解法2020
- Author(s)
  今倉暁, 櫻井鉄也
- Organizer
  2020年並列／分散／協調処理に関する『福井』サマー・ワークショップ (SWoPP2020)
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 組織内に分散された共有不能データのデータコラボレーション解析による活用実験.2020
- Author(s)
  稲葉, 弘明; 今倉, 暁; 栗山大輔; 鎮目, 進一; 岡田幸彦; 櫻井鉄也
- Organizer
  サービス学会第8回国内大会
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] 漸化式に着目したblock Krylov部分空間法のresidual gap評価と残差スムージング2020
- Author(s)
  相原研輔，今倉暁，保國惠一
- Organizer
  日本応用数理学会「行列・固有値問題の解法とその応用」研究部会第30回研究会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Nonlinear semi-NMF based method for deep neural network computations and its improvements.2019
- Author(s)
  Imakura, Akira; Sakurai, Tetsuya
- Organizer
  International Congress on Industrial and Applied Mathematics (ICIAM2019)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] A novel dimensionality reduction method using a complex momnet-based subspace.2019
- Author(s)
  Imakura, Akira; Sakurai, Tetsuya
- Organizer
  International Congress on Industrial and Applied Mathematics (ICIAM2019)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] Complex Moment-Based Supervised Eigenmap for Dimensionality Reduction2019
- Author(s)
  Akira Imakura, Momo Matsuda, Xiucai Ye, Tetsuya Sakurai
- Organizer
  The Thirty-Third AAAI Conference on Artificial Intelligence (AAAI-19)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Nonlinear semi-NMF based method for deep neural network computations2019
- Author(s)
  Akira Imakura
- Organizer
  International Symposium on "Digital Science Now"
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Distributed Collaborative Feature Selection Based on Intermediate Representation2019
- Author(s)
  Xiucai Ye, Hongmin Li, Akira Imakura, Tetsuya Sakurai
- Organizer
  The 28th International Joint Conference on Artificial Intelligence (IJCAI-19)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Nonlinear semi-NMF based method for deep neural network computations and its improvements2019
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Organizer
  International Congress on Industrial and Applied Mathematics (ICIAM2019)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] NMF型DNN計算法とその応用2019
- Author(s)
  今倉暁, 二村保徳, 櫻井鉄也
- Organizer
  日本応用数理学会2019年度年会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 一般内積における直交化のためのMGS-HP法の誤差解析2019
- Author(s)
  山本有作, 今倉暁
- Organizer
  日本応用数理学会2019年度年会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] A complex moment-based dimensionality reduction for data analysis.2019
- Author(s)
  Imakura, Akira; Matsuda, Momo; Ye, Xiucai; Sakurai, Tetsuya
- Organizer
  2019 Mini-Workshop on Computational Science (MWCS2019)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] A contour intergral-based stochastic estimator for eigenvalue counts of generalized eigenproblems2019
- Author(s)
  Yasunori Futamura, Takahiro Yano, Akira Imakura, Tetsuya Sakurai
- Organizer
  SIAM Conference on Computational Science and Engineering (CSE19)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 複素モーメント型並列固有値解法の概要と最近の進展2019
- Author(s)
  今倉暁
- Organizer
  岩手数理科学セミナー
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] スケーラブルな固有値解析エンジンとそのAIへの展開2019
- Author(s)
  櫻井鉄也, 今倉暁, 二村保徳, 叶秀彩
- Organizer
  RIMS研究集会「諸科学分野を結ぶ基礎学問としての数値解析学」
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Complex Moment-Based Supervised Eigenmap for Dimensionality Reduction2019
- Author(s)
  Akira Imakura, Momo Matsuda, Xiucai Ye, Tetsuya Sakurai
- Organizer
  情報系 WINTER FESTA Episode5 （ポスター発表）
- Data Source
  KAKENHI-PROJECT-19KK0255
[Presentation] A complex moment-based dimensionality reduction for data analysis2019
- Author(s)
  Akira Imakura, Momo Matsuda, Xiucai Ye, Tetsuya Sakurai
- Organizer
  2019 Mini-Workshop on Computational Science (MWCS2019)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Efficient Implementations of the Modified Gram-Schmidt Orthogonalization in a Non-Standard Inner Product2019
- Author(s)
  Yusaku Yamamoto, Akira Imakura
- Organizer
  The 13th workshop in the series of the "Parallel Numerics" (ParNum 2019)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Complex Moment-Based Supervised Eigenmap for Dimensionality Reduction2019
- Author(s)
  Akira Imakura, Momo Matsuda, Xiucai Ye, Tetsuya Sakurai
- Organizer
  情報系 WINTER FESTA Episode5
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 行列分解を基盤としたディープニューラルネットワーク計算法2019
- Author(s)
  今倉暁, 櫻井鉄也
- Organizer
  RIMS共同研究「諸科学分野を結ぶ基礎学問としての数値解析学」, 京都大学数理解析研究所
- Data Source
  KAKENHI-PROJECT-19KK0255
[Presentation] Arnoldi型反復を用いたblock SS-CAA法の改良2019
- Author(s)
  今倉暁, 櫻井鉄也
- Organizer
  日本応用数理学会第16回研究部会連合発表会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 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.2019
- Author(s)
  与田裕之; 今倉暁; 松田萌望; 叶, 秀彩; 櫻井鉄也
- Organizer
  第48回数値解析シンポジウム（NAS2019）
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] A novel dimensionality reduction method using a complex momnet-based subspace2019
- Author(s)
  Akira Imakura, Momo Matsuda, Xiucai Ye, Tetsuya Sakurai
- Organizer
  International Congress on Industrial and Applied Mathematics (ICIAM2019)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Distributed Collaborative Feature Selection Based on Intermediate Representation.2019
- Author(s)
  Ye, Xiucai; Li, Hongmin; Akira, Imakura; Sakurai, Tetsuya
- Organizer
  28th International Joint Conference on Artificial Intelligence (IJCAI-19)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] 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2019
- Author(s)
  今倉暁, 保國惠一, 高安亮紀
- Organizer
  日本応用数理学会第15回研究部会連合発表会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Efficient Implementations of the Modified Gram-Schmidt Orthogonalization in a Non-Standard Inner Product2019
- Author(s)
  Yusaku Yamamoto, Akira Imakura
- Organizer
  The 13th workshop in the series of the "Parallel Numerics" (ParNum 2019)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19KK0255
[Presentation] A complex moment-based spectral method for detecting anomalous structures in large graphs.2019
- Author(s)
  Sakurai, Tetsuya; Funamura, Yasunori; Ye, Xiucai; Imakura, Akira
- Organizer
  International Congress on Industrial and Applied Mathematics (ICIAM2019)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] 行列分解を基盤としたディープニューラルネットワーク計算法2019
- Author(s)
  今倉暁, 櫻井鉄也
- Organizer
  RIMS研究集会「諸科学分野を結ぶ基礎学問としての数値解析学」
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] A complex moment-based spectral method for detecting anomalous structures in large graphs2019
- Author(s)
  Tetsuya Sakurai, Yasunori Funamura, Xiucai Ye, Akira Imakura
- Organizer
  International Congress on Industrial and Applied Mathematics (ICIAM2019)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Verified Partial Eigenvalue Computation for Generalized Hermitian Eigenproblems Using Contour Integrals2018
- Author(s)
  今倉暁, 保國惠一, 高安亮紀
- Organizer
  第47回数値解析シンポジウム（NAS2018）
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Intel Xeon Phiを用いたSpectral nested dissectionの性能評価2018
- Author(s)
  稲川裕太, 二村保徳, 今倉暁, 櫻井鉄也
- Organizer
  SWoPP2018
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] 対称性を保存するblock SS-Hankel法について2018
- Author(s)
  今倉暁, 二村保徳, 櫻井鉄也
- Organizer
  日本応用数理学会第14回研究部会連合発表会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Complex Moment-Based Partial Singular Value Decomposition2018
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Organizer
  SIAM Conference on Applied Linear Algebra (SIAM-ALA18)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 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2018
- Author(s)
  今倉暁, 保國惠一, 高安亮紀
- Organizer
  日本応用数理学会 2018年度年会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Symmetry-preserving of the Hankel-type Sakurai-Sugiura eigenvalue solver for large sparse Hermitian definite generalized eigenvalue problem2018
- Author(s)
  Yasunori Futamura, Akira Imakura, Tetsuya Sakurai
- Organizer
  10th International Workshop on Parallel Matrix Algorithms and Applications (PMAA18)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] A complex moment-based method and its improvement for computing partial singular value decomposition2018
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Organizer
  The 37th JSST Annual International Conference on Simulation Technology(JSST2018)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Improving numerical stability and analyzing backward error for heavily damped quadratic eigenvalue problem2018
- Author(s)
  Hongjia Chen, Akira Imakura, Tetsuya Sakurai
- Organizer
  13th SIAM East Asian Section Conference 2018 (EASIAM2018)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Efficient Parallel Implementation of Spectral Nested Dissection for Large-Scale Sparse Linear System2018
- Author(s)
  Yuta Inagawa, Yasunori Futamura, Akira Imakura, Tetsuya Sakurai
- Organizer
  PMAA18
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] 複素モーメント型部分特異値分解アルゴリズムと非線形変数変換を用いた精度改善2018
- Author(s)
  今倉暁, 櫻井鉄也
- Organizer
  日本応用数理学会「行列・固有値問題の解法とその応用」研究部会第26回研究会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Efficient Parallel Implementation of Spectral Nested Dissection for Large-Scale Sparse Linear System2018
- Author(s)
  Yuta Inagawa, Yasunori Futamura, Akira Imakura, Tetsuya Sakurai
- Organizer
  10th International Workshop on Parallel Matrix Algorithms and Applications (PMAA18)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 反復線形ソルバを用いた大規模密一般化固有値問題向けSS-RR法の性能評価2018
- Author(s)
  矢野貴大、二村保徳、今倉暁、櫻井鉄也
- Organizer
  日本応用数理学会2018年度年会
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] 反復線形ソルバを用いた大規模密一般化固有値問題向けSS-RR法の性能評価2018
- Author(s)
  矢野貴大, 二村保徳, 今倉暁, 櫻井鉄也
- Organizer
  日本応用数理学会 2018年度年会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Intel Xeon Phiを用いたSpectral nested dissectionの性能評価2018
- Author(s)
  稲川裕太, 二村保徳, 今倉暁, 櫻井鉄也
- Organizer
  2018年並列／分散／協調処理に関する『熊本』サマー・ワークショップ (SWoPP2018)
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Verified computing for partial eigenvaluesusing a contour integral-type eigensolver2018
- Author(s)
  Akitoshi Takayasu, Akira Imakura, Keiichi Morikuni
- Organizer
  The 18th International Symposium on Scientific Computing, Computer Arithmetic, and Verified Numerical Computations (SCAN2018)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 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2018
- Author(s)
  松田萌望, 保國惠一, 今倉暁, 櫻井鉄也
- Organizer
  日本応用数理学会2018年度年会
- Data Source
  KAKENHI-PROJECT-18H03250
[Presentation] Structure-preserving of the block SS--Hankel method for solving Hermitian generalized eigenvalue problems2017
- Author(s)
  Akira Imakura, Yasunori Futamura, Tetsuya Sakurai
- Organizer
  12th International Conference on Parallel Processing and Applied Mathematics (PPAM2017)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Contour Integral Method to Evaluate Self--Energy Matrices for Large-Scale Electron Transport Calculations2017
- Author(s)
  Shigeru Iwase, Yasunori Futamura, Akira Imakura, Tetsuya Sakurai, Shigeru Tsukamoto, Forschungszentrum Julich, Tomoya Ono
- Organizer
  SIAM Conference on Parallel Processing for Scientific Computing (SIAM PP18)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 複素モーメントの誤差評価を用いた周回積分型精度保証付き部分固有値計算2017
- Author(s)
  今倉暁, 保國惠一, 高安亮紀
- Organizer
  日本応用数理学会 2017年度年会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] An improvement of the block SS－Hankel method for solving Hermitian generalized eigenvalue problems2017
- Author(s)
  Akira Imakura, Yasunori Futamura, Tetsuya Sakurai
- Organizer
  International Workshop on Eigenvalue Problems: Algorithms; Software and Applications, in Petascale Computing (EPASA2018)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] A complex moment-based nonlinear parallel eigensolver using the block communication-avoiding Arnoldi procedure2017
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Organizer
  Householder Symposium XX on Numerical Linear Algebra (HHXX)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Efficient and Scalable Calculation of Complex Band Structure Using Sakurai-Sugiura Method2017
- Author(s)
  Shigeru Iwase, Yasunori Futamura, Akira Imakura, Tetsuya Sakurai, Tomoya Ono
- Organizer
  International Conference for High Performance Computing, Networking, Storage and Analysis (SC17)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] A complex moment-based parallel eigensolver using the block communication-avoiding Arnoldi procedure2017
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Organizer
  4th JCAHPC Seminar
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] A balancing technique for improving backward error of heavily damped quadratic eigenvalue problem2017
- Author(s)
  Chen Hongjia, Akira Imakura, Tetsuya Sakurai
- Organizer
  日本応用数理学会 2017年度年会
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Contour Integral-Based Verified Computing for Partial Eigenvalues2017
- Author(s)
  Akitoshi Takayasu, Akira Imakura, Keiichi Morikuni
- Organizer
  SIAM Conference on Parallel Processing for Scientific Computing (SIAM PP18)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] Recent Advances on the Algorithm-based Fault Tolerance of the Sakurai-Sugiura Eigensolver2017
- Author(s)
  Yasunori Futamura, Akira Imakura, Tetsuya Sakurai
- Organizer
  SIAM Conference on Parallel Processing for Scientific Computing (SIAM PP18)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 実対称行列に対する周回積分を用いた精度保証付き部分固有値計算2017
- Author(s)
  今倉暁, 保國惠一, 高安亮紀
- Organizer
  第46回数値解析シンポジウム(NAS2017)
- Data Source
  KAKENHI-PROJECT-17K12690
[Presentation] 2つのKrylov部分空間を利用した複素モーメント型固有値解法2016
- Author(s)
  今倉暁, 櫻井鉄也
- Organizer
  日本応用数理学会第12回研究部会連合発表会
- Place of Presentation
  神戸学院大学ポートアイランドキャンパス（兵庫県神戸市）
- Year and Date
  2016-03-04
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] 2つのKrylov部分空間を利用した複素モーメント型固有値解法2016
- Author(s)
  今倉暁, 櫻井鉄也
- Organizer
  日本応用数理学会第12回研究部会連合発表会
- Place of Presentation
  神戸学院大学ポートアイランドキャンパス（兵庫県神戸市）
- Year and Date
  2016-03-04
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Krylov subspace in complex moment-based eigensolver2016
- Author(s)
  Akira Imakura,
- Organizer
  Workshop on Numerical Algebra, Algorithms, and Analysis
- Place of Presentation
  National Institute of Informatics (NII), Tokyo, Japan　（東京都千代田区）
- Year and Date
  2016-01-11
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Krylov subspace in complex moment-based eigensolver2016
- Author(s)
  Akira Imakura
- Organizer
  Workshop on Numerical Algebra, Algorithms, and Analysis
- Place of Presentation
  National Institute of Informatics (NII), Tokyo
- Year and Date
  2016-01-11
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Error resilience strategy of a complex moment-based eigensolver2015
- Author(s)
  Akira Imakura
- Organizer
  Annual Meeting on Advanced Computing System and Infrastructure (ACSI) 2015
- Place of Presentation
  つくば国際会議場（茨城県つくば市）
- Year and Date
  2015-01-26
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Error resilience strategy of a complex moment-based eigensolver2015
- Author(s)
  Akira Imakura, Yasunori Futamura, Tetsuya Sakurai
- Organizer
  International Workshop on Eigenvalue Problems: Algorithms; Software and Applications, in Petascale Computing (EPASA2015)
- Place of Presentation
  EPOCHAL TSUKUBA, Tsukuba-city,Ibaraki
- Year and Date
  2015-09-14
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Shifted Block BiCGSTAB(l)法の構築とその近似解の精度について2015
- Author(s)
  齋藤周作, 多田野寛人, 今倉暁
- Organizer
  第44回数値解析シンポジウム (NAS2015)
- Place of Presentation
  ぶどうの丘（山梨県甲州市）
- Year and Date
  2015-06-08
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Shifted Block BiCGSTAB(l)法の構築とその近似解の精度について2015
- Author(s)
  齋藤周作, 多田野寛人, 今倉暁
- Organizer
  第44回数値解析シンポジウム (NAS2015)
- Place of Presentation
  ぶどうの丘（山梨県甲州市）
- Year and Date
  2015-06-08
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Inherent error resilience of a complex moment-based eigensolver for solving interior eigenvalue problem2015
- Author(s)
  Akira Imakura, Yasunori Futamura, Tetsuya Sakurai
- Organizer
  2015 LBNL - Tsukuba Joint Meeting
- Place of Presentation
  LBNL, USA
- Year and Date
  2015-05-28
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] 複数右辺ベクトル・複数シフトをもつ線形方程式に対するShifted Block Krylov部分空間法の近似解の精度改善2015
- Author(s)
  多田野寛人, 齋藤周作, 今倉暁
- Organizer
  【プラズマ壁相互作用における非線形現象の理論モデル構築と画像・動画解析手法開発に関する研究会】第１回非線形・可視化部門研究会
- Place of Presentation
  核融合科学研究所（岐阜県土岐市）
- Year and Date
  2015-09-28
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Development of the Shifted Block BiCGGR method and accuracy improvement of approximate solutions2015
- Author(s)
  Hiroto Tadano, Shusaku Saito, Akira Imakura
- Organizer
  International Conference on Simulation Technology (JSST2015)
- Place of Presentation
  Toyama International Conference Center （富山県富山市）
- Year and Date
  2015-10-12
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] A Contour Integral-based Parallel Eigensolver with Higher Complex Moments2015
- Author(s)
  Tetsuya Sakurai, Yasunori Futamura, Akira Imakura
- Organizer
  SIAM Conference on Applied Linear Algebra (SIAM LA15)
- Place of Presentation
  Hyatt Regency Atranta, Atranta, Georgia, USA
- Year and Date
  2015-10-26
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Fault tolerance inherent in a complex moment-based eigensolver2015
- Author(s)
  Akira Imakura, Yasunori Futamura, Tetsuya Sakurai
- Organizer
  Sparse Solvers for Exascale: From Building Blocks to Applications
- Place of Presentation
  Greifswald (Germany)
- Year and Date
  2015-03-23
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Inherent error resilience of a complex moment-based eigensolver for solving interior eigenvalue problem2015
- Author(s)
  Akira Imakura, Yasunori Futamura, Tetsuya Sakurai
- Organizer
  2015 LBNL - Tsukuba Joint Meeting
- Place of Presentation
  LBNL, USA
- Year and Date
  2015-05-28
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Accuracy improvement of the Shifted Block BiCGGR method for linear systems with multiple shifts and multiple right-hand sides2015
- Author(s)
  Hiroto Tadano, Shusaku Saito, Akira Imakura
- Organizer
  International Workshop on Eigenvalue Problems: Algorithms; Software and Applications, in Petascale Computing (EPASA2015)
- Place of Presentation
  EPOCHAL TSUKUBA, Tsukuba-city,Ibaraki
- Year and Date
  2015-09-14
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Error resilience strategy of a complex moment-based eigensolver2015
- Author(s)
  Akira Imakura, Yasunori Futamura, Tetsuya Sakurai
- Organizer
  Annual Meeting on Advanced Computing System and Infrastructure (ACSI) 2015
- Place of Presentation
  筑波国際会議場（茨城）
- Year and Date
  2015-01-26
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] A novel complex moment-based eigensolver using a communication-avoiding Arnoldi process2015
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Organizer
  SIAM Conference on Applied Linear Algebra (SIAM LA15)
- Place of Presentation
  Hyatt Regency Atranta, Atranta, Georgia, USA
- Year and Date
  2015-10-26
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] A novel complex moment-based eigensolver using a communication-avoiding Arnoldi process2015
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Organizer
  SIAM Conference on Applied Linear Algebra (SIAM LA15)
- Place of Presentation
  Hyatt Regency Atranta, Atranta, Georgia, USA
- Year and Date
  2015-10-26
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] 複数右辺ベクトル・複数シフトをもつ線形方程式に対するShifted Block Krylov部分空間法の近似解の精度改善2015
- Author(s)
  多田野寛人, 齋藤周作, 今倉暁
- Organizer
  【プラズマ壁相互作用における非線形現象の理論モデル構築と画像・動画解析手法開発に関する研究会】第１回非線形・可視化部門研究会
- Place of Presentation
  核融合科学研究所（岐阜県土岐市）
- Year and Date
  2015-09-28
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Accuracy improvement of the Shifted Block BiCGGR method for linear systems with multiple shifts and multiple right-hand sides2015
- Author(s)
  Hiroto Tadano, Shusaku Saito, Akira Imakura
- Organizer
  International Workshop on Eigenvalue Problems: Algorithms; Software and Applications, in Petascale Computing (EPASA2015)
- Place of Presentation
  EPOCHAL TSUKUBA, Tsukuba-city, Japan　（茨城県つくば市）
- Year and Date
  2015-09-14
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Error resilience strategy of a complex moment-based eigensolver2015
- Author(s)
  Akira Imakura, Yasunori Futamura, Tetsuya Sakurai
- Organizer
  International Workshop on Eigenvalue Problems: Algorithms; Software and Applications, in Petascale Computing (EPASA2015)
- Place of Presentation
  EPOCHAL TSUKUBA, Tsukuba-city, Japan　（茨城県つくば市）
- Year and Date
  2015-09-14
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Fault tolerance inherent in a complex moment-based eigensolver2015
- Author(s)
  Akira Imakura
- Organizer
  Sparse Solvers for Exascale: From Building Blocks to Applications
- Place of Presentation
  Greifswald (Germany)
- Year and Date
  2015-03-23
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] 内部固有値問題のためのFEAST法に対するArnoldi/Lanczos型改良法の提案2015
- Author(s)
  今倉暁, 二村保徳, 櫻井鉄也
- Organizer
  2015年並列／分散／協調処理に関する『別府』サマー・ワークショップ (SWoPP2015)
- Place of Presentation
  ビーコンプラザ別府国際コンベンションセンター（大分県別府市）
- Year and Date
  2015-08-04
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Inherent Error Resilience of a Complex Moment-Based Eigensolver2015
- Author(s)
  Akira Imakura
- Organizer
  SIAM Conference on Computational Science and Engineering (CSE15)
- Place of Presentation
  Salt Lake City (USA)
- Year and Date
  2015-03-14
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] A Contour Integral-based Parallel Eigensolver with Higher Complex Moments2015
- Author(s)
  Tetsuya Sakurai, Yasunori Futamura, Akira Imakura
- Organizer
  SIAM Conference on Applied Linear Algebra (SIAM LA15)
- Place of Presentation
  Hyatt Regency Atranta, Atranta, Georgia, USA
- Year and Date
  2015-10-26
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Arnoldi-type contour integral-based eigensolver for solving nonlinear eigenvalue problems2015
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Organizer
  ICIAM 2015
- Place of Presentation
  Beijing, China
- Year and Date
  2015-08-10
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Inherent Error Resilience of a Complex Moment-Based Eigensolver2015
- Author(s)
  Akira Imakura, Yasunori Futamura, Tetsuya Sakurai
- Organizer
  SIAM Conference on Computational Science and Engineering (CSE15)
- Place of Presentation
  Salt Lake City (USA)
- Year and Date
  2015-03-14
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Arnoldi-type contour integral-based eigensolver for solving nonlinear eigenvalue problems2015
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Organizer
  ICIAM 2015
- Place of Presentation
  Beijing, China
- Year and Date
  2015-08-10
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Development of the Shifted Block BiCGGR method and accuracy improvement of approximate solutions2015
- Author(s)
  Hiroto Tadano, Shusaku Saito, Akira Imakura
- Organizer
  International Conference on Simulation Technology (JSST2015)
- Place of Presentation
  Toyama International Conference Center（富山県富山市）
- Year and Date
  2015-10-12
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] A Novel Contour Integral Based Eigensolver for Solving Linear and Nonlinear Eigenvalue Problems2014
- Author(s)
  Akira Imakura, Lei Du, Tetsuya Sakurai
- Organizer
  East Asia Section of SIAM (EASIAM) 2014
- Place of Presentation
  Ambassador City Jomtien (Thailand)
- Year and Date
  2014-06-23
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Hankel行列版周回積分型固有値解法の精度解析2014
- Author(s)
  今倉暁, 杜磊, 長谷川哲也, 櫻井鉄也
- Organizer
  第43回数値解析シンポジウム -NAS2014-
- Place of Presentation
  ホテル日航八重山(沖縄県石垣市）
- Year and Date
  2014-06-11
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] 複数右辺ベクトルを持つ連立一次方程式に対する双共役残差型アプローチに基づく高精度Block Krylovアルゴリズムについて2014
- Author(s)
  多田野寛人, 今倉暁
- Organizer
  新学術領域研究「コンピューティクスによる物質デザイン：複合相関と非平衡ダイナミクス」平成25年度第2回研究会
- Place of Presentation
  東京大学
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] A high accuracy Block Krylov subspace method based on the bi-conjugate residual approach2014
- Author(s)
  Hiroto TADANO, Akira IMAKURA
- Organizer
  International Workshop on Eigenvalue Problems: Algorithms; Software and Applications, in Petascale Computing (EPASA2014)
- Place of Presentation
  つくば国際会議場
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] 疎行列向け直接解法に基づく定常反復法および前処理としての有効性2014
- Author(s)
  今倉暁
- Organizer
  環瀬戸内応用数理研究部会第17回シンポジウム
- Place of Presentation
  愛媛大学
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Two-Stage Simultaneous Band Reduction for Two Dense Symmetric Matrices2014
- Author(s)
  Lei Du, Akira Imakura, Tetsuya Sakurai
- Organizer
  East Asia Section of SIAM (EASIAM) 2014
- Place of Presentation
  Ambassador City Jomtien (Thailand)
- Year and Date
  2014-06-23
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] 各種周回積分型固有値解法の関係性について2014
- Author(s)
  今倉暁, 杜磊, 櫻井鉄也
- Organizer
  2014年度 RIMS 研究集会「新時代の科学技術を牽引する数値解析学」
- Place of Presentation
  京都大学数理解析研究所（京都府京都市）
- Year and Date
  2014-10-08
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Accuracy analysis on the Rayleigh-Ritz type of the contour integral based eigensolver2014
- Author(s)
  Akira IMAKURA, Lei DU, Tetsuya SAKURAI
- Organizer
  International Workshop on Eigenvalue Problems: Algorithms; Software and Applications, in Petascale Computing (EPASA2014)
- Place of Presentation
  つくば国際会議場
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] A Novel Contour Integral Based Eigensolver for Solving Linear and Nonlinear Eigenvalue Problems2014
- Author(s)
  Akira Imakura, Tetsuya Sakurai
- Organizer
  East Asia Section of SIAM (EASIAM) 2014
- Place of Presentation
  Chonburi (Thailand)
- Year and Date
  2014-06-23
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] On error resilience of a complex moment-based eigensolver2014
- Author(s)
  Tetsuya Sakurai, Yasunori Futamura, Akira Imakura
- Organizer
  10th International Workshop on Accurate Solution of Eigenvalue Problems (IWASEP10)
- Place of Presentation
  Dubrovnik (Croatia)
- Year and Date
  2014-06-02
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] On error resilience of a complex moment-based eigensolver2014
- Author(s)
  Tetsuya Sakurai, Yasunori Futamura, Akira IMAKURA
- Organizer
  10th International Workshop on Accurate Solution of Eigenvalue Problems (IWASEP10)
- Place of Presentation
  Dubrovnik(クロアチア）
- Year and Date
  2014-06-02
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] 疎行列向け直接法に基づく重み付き定常反復法2014
- Author(s)
  今倉暁, 櫻井鉄也
- Organizer
  新学術領域研究「コンピューティクスによる物質デザイン：複合相関と非平衡ダイナミクス」平成25年度第2回研究会
- Place of Presentation
  東京大学
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Rayleigh-Ritz法に基づく周回積分型固有値解法の精度解析2014
- Author(s)
  今倉暁, 杜磊, 櫻井鉄也
- Organizer
  Kunitachi One-Day Symposium on Applied Mathematics and Related Topics
- Place of Presentation
  一橋大学
- Invited
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] 実数計算のみを利用した周回積分型固有値解法における精度悪化とその対処2014
- Author(s)
  長谷川哲也, 今倉暁, 櫻井鉄也
- Organizer
  第8回協定講座シンポジウム
- Place of Presentation
  神戸大学（兵庫）
- Year and Date
  2014-09-11
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Block BiCGSTAB(l)法の計算量削減2014
- Author(s)
  齋藤周作, 多田野寛人, 今倉暁
- Organizer
  日本応用数理学会 2014年度年会
- Place of Presentation
  政策研究大学院大学（東京）
- Year and Date
  2014-09-03
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] 各種周回積分型固有値解法の関係性について2014
- Author(s)
  今倉暁, 杜磊, 櫻井鉄也
- Organizer
  2014年度 RIMS 研究集会「新時代の科学技術を牽引する数値解析学」
- Place of Presentation
  京都大学数理解析研究所（京都）
- Year and Date
  2014-10-08
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Hankel行列版周回積分型固有値解法の精度解析2014
- Author(s)
  今倉暁, 杜磊, 長谷川哲也, 櫻井鉄也
- Organizer
  第43回数値解析シンポジウム -NAS2014-
- Place of Presentation
  ホテル日航八重山（沖縄）
- Year and Date
  2014-06-11
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Communication-Avoiding Arnoldi版周回積分型固有値解法2014
- Author(s)
  今倉暁, 杜磊, 櫻井鉄也
- Organizer
  日本応用数理学会 2014年度年会
- Place of Presentation
  政策研究大学院大学（東京）
- Year and Date
  2014-09-03
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] Communication-Avoiding Arnoldi版周回積分型固有値解法2014
- Author(s)
  今倉暁, 杜磊, 櫻井鉄也
- Organizer
  日本応用数理学会 2014年度年会
- Place of Presentation
  政策研究大学院大学（東京都港区）
- Year and Date
  2014-09-03
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] 周回積分型固有値解法の数理的耐故障性について2014
- Author(s)
  今倉暁, 櫻井鉄也
- Organizer
  2014年並列／分散／協調処理に関する『新潟』サマー・ワークショップ（SWoPP新潟2014）
- Place of Presentation
  朱鷺メッセ新潟コンベンションセンター（新潟）
- Year and Date
  2014-07-28
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] A Novel Interpretation for the Contour Integral-Based Spectral Projection Methods for Solving Generalized Eigenvalues Problems2013
- Author(s)
  Akira IMAKURA, Lei DU, Tetsuya SAKURAI
- Organizer
  The 9th East Asia SIAM Conference - The 2nd Conference on Industrial and Applied Mathematics
- Place of Presentation
  The Newton Hotel, Indonesia
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] 線形方程式の数値解法と科学技術計算への応用2013
- Author(s)
  今倉暁
- Organizer
  2013年度数値線形代数研究集会
- Place of Presentation
  東京理科大学
- Invited
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] 双共役残差型反復解法の複数右辺ベクトル対応版への拡張と性能評価2013
- Author(s)
  多田野寛人, 石川陽一, 今倉暁
- Organizer
  日本応用数理学会2013年度年会
- Place of Presentation
  アクロス福岡
- Data Source
  KAKENHI-PROJECT-25870099
[Presentation] 周回積分型固有値解法に基づく並列固有値解析ソフトウェア
- Author(s)
  今倉暁
- Organizer
  今後の HPC(基盤技術と応用) に関するワークショップ
- Place of Presentation
  長崎市図書館 (長崎)
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] Accuracy analysis on the Rayleigh-Ritz type of the contour integral based eigensolver
- Author(s)
  Akira IMAKURA
- Organizer
  International Workshop on Eigenvalue Problems: Algorithms; Software and Applications, in Petascale Computing (EPASA2014)
- Place of Presentation
  EPOCHAL TSUKUBA (Tsukuba)
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] 周回積分型固有値解法に対するBlock Arnoldi法に基づく新解釈および改良法の提案
- Author(s)
  今倉暁
- Organizer
  日本応用数理学会2013年度年会
- Place of Presentation
  アクロス福岡 (福岡)
- Data Source
  KAKENHI-PROJECT-25286097
[Presentation] A Novel Interpretation for the Contour Integral-Based Spectral Projection Methods for Solving Generalized Eigenvalues Problems
- Author(s)
  Akira IMAKURA
- Organizer
  The 9th East Asia SIAM Conference - The 2nd Conference on Industrial and Applied Mathematics
- Place of Presentation
  The Newton Hotel (Indonesia)
- Data Source
  KAKENHI-PROJECT-25286097

1. SAKURAI Tetsuya (60187086)

# of Collaborated Projects: 5 results

# of Collaborated Products: 41 results
2. 二村保徳 (30736210)

# of Collaborated Projects: 3 results

# of Collaborated Products: 11 results
3. 保國惠一 (90765934)

# of Collaborated Projects: 3 results

# of Collaborated Products: 10 results
4. 高安亮紀 (60707743)

# of Collaborated Projects: 2 results

# of Collaborated Products: 6 results
5. 多田野寛人 (50507845)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
6. 池上努 (80245612)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. 山本有作 (20362288)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
8. 工藤周平 (50824421)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. 岩下武史 (30324685)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. 塙敏博 (30308283)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. 伊田明弘 (80742121)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
12. 美舩健 (20362460)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
13. 横田理央 (20760573)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
14. 高橋康人 (90434290)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. 深谷猛 (30633846)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
16. 相原研輔 (70735498)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
17. 岡田幸彦 (80432053)

# of Collaborated Projects: 1 results

# of Collaborated Products: 6 results
18. 佐野幸恵 (60580206)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
19. 角ヶ谷典幸 (80267921)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
20. 叶秀彩 (60814001)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
21. BOGDANOVA ANNA (70924463)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
22. MAEDA Yasuyuki

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
23. CHEN Hongjia

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
24. 香川璃奈

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Imakura Akira 今倉 暁

Research Projects

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Co-Researchers

Development of a Foundation for Numerical Operator Algebras and its Applications

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Next-generation high-performance linear solver for future computational science and engineering

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制約付き固有値問題に基づく局所潜在空間生成とその大規模分散データ解析への応用

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Development of highly reliable AI technologies based on complex moment-based techniquesPrincipal Investigator

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Scientific Research of Accounting Informatics

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Development of complex moment-based methods and mathematical risk avoidance techniques for infinite dimensional eigenvalue problemsPrincipal Investigator

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高いスケーリング性能と高精度性を併せ持つ次世代固有値・特異値分解ライブラリの開発

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Development of eigenvalue analysis methods using a quadrature-type eigensolver with nonlinear transformations

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Development of error resilience technology for complex moment-based parallel eigensolversPrincipal Investigator

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Development of an advanced method for nonlinear eigenvalue problems and its applications

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Developments of iterative-type preconditioning techniques for large linear systems and their applicationPrincipal Investigator

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[Book] 数値線形代数の数理とHPC2018

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[Journal Article] DC-COX: data collaboration Cox proportional hazards model for privacy-preserving survival analysis on multiple parties.2023

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Imakura Akira 今倉暁

[Journal Article] リレーションシップバンキング機能の向上を目的とした中小企業の資金ニーズ判別法とその活用の提案2023