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J-GLOBAL ID:200901082442781324   Update date: Feb. 12, 2025

Ishii Toshimasa

イシイ トシマサ | Ishii Toshimasa
Affiliation and department:
Job title: Professor
Homepage URL  (1): http://www.econ.hokudai.ac.jp/~ishii/
Research field  (1): Information theory
Research keywords  (6): グラフ理論 ,  組合せ最適化 ,  アルゴリズム ,  Graph Theory ,  Combinatorial Optimization ,  Algorithm
Research theme for competitive and other funds  (14):
  • 2016 - 2022 ネットワーク構造を有する離散最適化問題に対する高性能アルゴリズムとその応用
  • 2018 - 2021 再保険ネットワークのリスク管理と保険システムの救済問題に関する研究
  • 2014 - 2020 Development of efficient algorithms based on enumeration structures
  • 2015 - 2018 Studies on the financial risk management and the public fund distribution under systemic risks
  • 2012 - 2015 Studies on graph theoretical approaches for robust network design and its generalizations
Show all
Papers (59):
  • Toshimasa Ishii, Akitoshi Kawamura, Yusuke Kobayashi, Kazuhisa Makino. Trade-offs among degree, diameter, and number of paths. Discret. Appl. Math. 2023. 327. 96-100
  • Toshimasa Ishii, Jun Kawahara, Kazuhisa Makino, Hirotaka Ono. Reallocation Problems with Minimum Completion Time. COCOON. 2022. 292-304
  • Magnús M. Halldórsson, Toshimasa Ishii, Kazuhisa Makino, Kenjiro Takazawa. Posimodular Function Optimization. Algorithmica. 2022. 84. 4. 1107-1131
  • Hitoshi Hayakawa, Toshimasa Ishii, Hirotaka Ono, Yushi Uno. Settlement fund circulation problem. Discret. Appl. Math. 2019. 265. 86-103
  • Hitoshi Hayakawa, Toshimasa Ishii, Hirotaka Ono, Yushi Uno. Settlement Fund Circulation Problem. 28th International Symposium on Algorithms and Computation, ISAAC 2017, December 9-12, 2017, Phuket, Thailand. 2017. 46:1-46:13
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MISC (29):
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Books (3):
  • 数理工学事典
    朝倉書店 2011 ISBN:4254280033
  • 離散数学のすすめ
    現代数学社 2010 ISBN:4768704123
  • グラフ理論-連結構造とその応用 (基礎数理講座)
    朝倉書店 2010 ISBN:4254117809
Education (5):
  • 1999 - 2000 Kyoto University Graduate School of Informatics Department of Applied Mathematics and Physis
  • - 2000 Kyoto University Graduate School, Division of Information and Communication
  • 1995 - 1999 Kyoto University Graduate School of Engineering
  • 1991 - 1995 Kyoto University Faculty of Engineering
  • - 1995 Kyoto University Faculty of Engineering
Professional career (2):
  • Master of Engineering (Kyoto University)
  • Doctor of Informatics (Kyoto University)
Work history (4):
  • 2016/09 - 現在 北海道大学 大学院経済学研究院 教授
  • 2012/04 - 2016/08 Hokkaido University Graduate School of Economics and Business Administration
  • 2006/04 - 2012/03 Otaru University of Commerce Faculty of Commerce, Department of Information and Management Science
  • 2000/04 - 2006/03 Toyohashi University of Technology Faculty of Engineering
Awards (4):
  • 2022/10 - Best Paper Candidate (The 28th International Computing and Combinatorics Conference (COCOON 2022))
  • 2016/03 - 情報処理学会 山下記念研究賞
  • 2015/09 - FIT 船井ベストペーパー賞
  • 2007/03 - 日本オペレーションズ・リサーチ学会 文献賞奨励賞
Association Membership(s) (4):
情報処理学会 ,  日本オペレーションズリサーチ学会 ,  Control and Information Engineers ,  The Operations Research Society of Japan
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