Rchr
J-GLOBAL ID：200901049044099729   Update date: Oct. 17, 2024

YAMAMOTO Yusaku

ヤマモト ユウサク | YAMAMOTO Yusaku
Affiliation and department：
The University of Electro-Communications Graduate School of Informatics and Engineering, School of Informatics and Engineering, "Department of Computer and Network Engineering, Cluster I (Informatics and Computer Engineering)"

About The University of Electro-Communications Graduate School of Informatics and Engineering, School of Informatics and Engineering, "Department of Computer and Network Engineering, Cluster I (Informatics and Computer Engineering)"


Job title： Professor
Research field  (1)： Computational science
Research keywords  (8)： Parallel Computing ,  Eigenvalue Problems ,  Linear Simultaneous Equations ,  Numerical Linear Algebra ,  並列計算 ,  連立1次方程式 ,  固有値 ,  線形計算
Research theme for competitive and other funds  (22)：
  • 2022 - 2025 組合せ的前処理と量子アニーリングの融合による行列計算の加速手法
  • 2023 - 2024 Investigation for the advancement of the general-purpose surface-structural-analysis programme, 2DMAT II
  • 2019 - 2023 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
  • 2017 - 2022 Fast, accurate and stable matrix computation algorithms based on non-orthogonal transformations
  • 2017 - 2020 Development of a parallel matrix library for computational physics with high strong-scaling performance
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Papers (85)：
  • 宮下 朋也, 工藤 周平, 山本 有作. 二重指数関数型数値積分公式に基づく行列符号関数計算法の改良と性能評価. 日本応用数理学会論文誌. 2024. 34. 3. 66-97
  • Ryoto Watanabe, Masato Shinjo, Yusaku Yamamoto, Masashi Iwasaki. q-discretization of the Kostant-Toda equation and its asymptotic analysis. Transactions of Mathematics and Its Applications. 2024. 8. 2
  • Takeshi Fukaya, Yuji Nakatsukasa, Yusaku Yamamoto. A Cholesky QR type algorithm for computing tall-skinny QR factorization with column pivoting. 2024 IEEE International Parallel and Distributed Processing Symposium (IPDPS). 2024
  • Shuhei Kudo, Yusaku Yamamoto, Takeo Hoshi. A fast and efficient computation method for reflective diffraction simulations. Computer Physics Communications. 2024. 296. 109029-109029
  • Koushi Teramoto, Masaki Kugaya, Shuhei Kudo, Yasuhiko Takenaga, Yusaku Yamamoto. Approximate Block Diagonalization of Symmetric Matrices Using Quantum Annealing. Proceedings of the International Conference on High Performance Computing in Asia-Pacific Region. 2024
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MISC (39)：
  • 西脇友哉, 福田亜希子, 山本有作, 岩崎雅史. 運搬車容量付きの箱に番号が付いた箱玉系とシフト付きLR変換との対応. 日本応用数理学会年会講演予稿集(CD-ROM). 2022. 2022
  • 山本有作. 巨大行列の固有値計算. 数学セミナー. 2020. 59. 2. 12-17
  • Tsubasa Sakai, Shuhei Kudo, Hiroto Imachi, Yuto Miyatake, Takeo Hoshi, Yusaku Yamamoto. A parallelizable energy-preserving integrator MB4 and its application to quantum-mechanical wavepacket dynamics. Preprint: https://arxiv.org/abs/2003.04345. 2020
  • NAKANO Tomoki, YOKOKAWA MITSUO, FUKAYA Takeshi, YAMAMOTO Yusaku. 緩和型スーパーノードマルチフロンタル法の最適な緩和パラメータについて. 情報処理学会第167回ハイパフォーマンスコンピューティング研究会. 2018. 2018-HPC-167. 28. 1-8
  • 深谷猛, 深谷猛, 深谷猛, 山本有作, 山本有作, 今村俊幸, 今村俊幸. 1次元分散型のCAQRアルゴリズムの性能評価とパネルサイズの自動チューニングに向けた検討. 計算工学講演会論文集(CD-ROM). 2015. 20. ROMBUNNO.E-1-3
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Books (10)：
  • Advanced Mathematical Science for Mobility Society
    Springer Singapore 2023 ISBN:9789819997718
  • 20世紀のトップ10アルゴリズム
    共立出版 2022
  • Vector Calculus
    裳華房 2020
  • 計算科学のための基本数理アルゴリズム
    共立出版 2019 ISBN:9784320122666
  • The Art of High Performance Computing for Computational Science, Vol. 1
    Springer 2019
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Lectures and oral presentations  (71)：
  • Comparison of Two QUBO Formulations of Approximate Block Diagonalization and Their Performance on the D-Wave Advantage Quantum Annealing Machine
    (15th International Conference on Parallel Processing & Applied Mathematics 2024)
  • Picard逐次近似法とGauss-Seidel法
    (第50回数値解析シンポジウム 2024)
  • Approximate Block Diagonalization of Symmetric Matrices Using Quantum Annealing
    (International Conference on High Performance Computing in Asia-Pacific Region (HPCAsia '24) 2024)
  • Approximate block diagonalization of symmetric matrices using a quantum annealing
    (2023 International Congress on Industrial and Applied Mathematics (ICIAM 2023) 2023)
  • Computing the matrix sign function with the double exponential formula
    (2023 International Congress on Industrial and Applied Mathematics (ICIAM 2023) 2023)
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Awards (1)：
  • 2021/09 - 日本応用数理学会 論文賞 荻田・相島の固有ベクトル反復改良法に基づく実対称行列の固有値分解追跡手法
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