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2008 Fiscal Year Final Research Report

Design of Approximation Algorithms for the Problems with Grapth Structure

Research Project

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Project/Area Number 16092212
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionKyoto University

Principal Investigator

NAGAMOCHI Hiroshi  Kyoto University, 情報学研究科, 教授 (70202231)

Co-Investigator(Kenkyū-buntansha) KARUNO Yoshiyuki  京都工芸繊維大学, 工芸科学研究科, 准教授 (80252542)
UNO Yushi  大阪府立大学, 理学系研究科, 講師 (60244670)
ZHAO Liang  京都大学, 情報学研究科, 講師 (90344902)
YAMAZAKI Koichi  群馬大学, 工学研究科, 准教授 (00246662)
Project Period (FY) 2004 – 2007
Keywordsグラフアルゴリズム / 連結度 / ネットワーク設計 / 最適化 / 配送スケジューリング / 近似アルゴリズム / パッキング / グラフ描画
Research Abstract

通信網, 電力網, 交通網, VLSIの配線, スケジューリング問題, 地理情報システム等の多くのシステム工学的, 情報工学的諸問題に対するアルゴリズムを設計する場合には, これらを離散最適化問題として定式化することで, 問題の持つ計算の複雑さの解明や高度な数学的解法の適用が可能となる. 本研究では, グラフアルゴリズムを中心的な道具として, 離散最適化問題に対する理論保証付きアルゴリズムの開発を行うとともにパッキング問題に対しては実際に難しい例題を効率よく解くソルバーの開発を行った.

  • Research Products

    (16 results)

All 2009 2008 2007 2006 2005

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (5 results) Book (1 results)

  • [Journal Article] Scheduling capacitated one-way vehicles on paths with deadlines2009

    • Author(s)
      J. Uchida, Y. Karuno, H. Nagamochi
    • Journal Title

      SICE Journal of Control, Measurement, and System Integration Vol. 2, No. 1

      Pages: 20-26

    • Peer Reviewed
  • [Journal Article] Performance analysis of a collision detection algorithm of spheres based on slab partitioning2008

    • Author(s)
      T. Imamichi, H. Nagamochi
    • Journal Title

      IEICE Transactions 91-A (9)

      Pages: 2308-2313

    • Peer Reviewed
  • [Journal Article] Worst case analysis for pickup and delivery problems with transfer2008

    • Author(s)
      Y. Nakao, H. Nagamochi
    • Journal Title

      IEICE Transactions 91-A(9)

      Pages: 2328-2334

    • Peer Reviewed
  • [Journal Article] Approximating a vehicle scheduling problem with time windows and handling times2008

    • Author(s)
      H. Nagamochi, T. Ohnishi
    • Journal Title

      Theoretical Computer Science 393 (1-3)

      Pages: 133-146

    • Peer Reviewed
  • [Journal Article] Approximating minimum cost multigraphs of specified edge-connectivity under degree bounds2007

    • Author(s)
      T. Fukunaga, H. Nagamochi
    • Journal Title

      J. Operations Research Society of Japan vol. 50, no. 4

      Pages: 339-349

    • Peer Reviewed
  • [Journal Article] Computing a minimum cut in a graph with dynamic edges incident to a designated vertex2007

    • Author(s)
      H. Nagamochi
    • Journal Title

      Inst. Electron. Inform. Comm. Eng. Trans. Fundamentals vol.E90-D, no.2

      Pages: 428-431

    • Peer Reviewed
  • [Journal Article] Packing soft rectangles2006

    • Author(s)
      H. Nagamochi
    • Journal Title

      International Journal of Foundations of Computer Science vol. 17, no. 5

      Pages: 1165-1178

    • Peer Reviewed
  • [Journal Article] Sparse connectivity certificates via MA orderings in graphs2006

    • Author(s)
      H. Nagamochi
    • Journal Title

      Discrete Applied Mathematics vol. 154

      Pages: 2411-2417

    • Peer Reviewed
  • [Journal Article] A fast edge-splitting algorithm in edge-weighted graphs2006

    • Author(s)
      H. Nagamochi
    • Journal Title

      Inst. Electron. Inform. Comm. Eng. Trans. Fundamentals vol. E89-A, no. 5

      Pages: 1263-1268

    • Peer Reviewed
  • [Journal Article] Increasing the edge-connectivity by contracting a vertex subset2006

    • Author(s)
      H. Nagamochi
    • Journal Title

      IEICE Transactions on Information and Systems vol. E89-D, no. 2

      Pages: 744-750

    • Peer Reviewed
  • [Presentation] Orthogonal drawings for plane graphs with specified face areas2007

    • Author(s)
      A. Kawaguchi
    • Organizer
      The 4th Annual Conference on Theory and Applications of Models of Computation (TAMC07) Lecture Notes in Computer Science, volume 4484
    • Place of Presentation
      Shanghai, China
    • Year and Date
      2007-05-25
  • [Presentation] Network design with edge-connectivity and degree constraints2006

    • Author(s)
      T. Fukunaga
    • Organizer
      Fourth Workshop on Approximation and Online Algorithms (WAOA06) Lecture Notes in Computer Science, volume 4368
    • Place of Presentation
      ETH Zurich, Zurich, Switzerland
    • Year and Date
      2006-09-14
  • [Presentation] An improved approximation algorithm for capacitated multicast routings in networks2006

    • Author(s)
      E. Morsy
    • Organizer
      Proc. of International Symposium on Scheduling 2006 (ISS2006)
    • Place of Presentation
      Arcadia Ichigaya, Tokyo, Japan
    • Year and Date
      2006-07-18
  • [Presentation] Convex drawings with non-convex boundary2006

    • Author(s)
      S. -H. Hong
    • Organizer
      The 32nd International Workshop on Graph-Theoretic Concepts in Computer Science (WG 2006) Lecture Notes in Computer Science, vol. 4271(Springer-Verlag)
    • Place of Presentation
      Bergen, Norway
    • Year and Date
      2006-06-22
  • [Presentation] Minimizing capacitated tree covers of graphs2005

    • Author(s)
      Y. Karuno
    • Organizer
      Third International Conference on Innovative Applications of Information Technology for the Developing World (Asian Applied Computing Conference (AACC 2005))
    • Place of Presentation
      Nepal
    • Year and Date
      2005-12-10
  • [Book] Algorithmic Aspects of Graph Connectivities (Encyclopedia of Mathematics and Its Applications)2008

    • Author(s)
      Hiroshi Nagamochi, Toshihide Ibaraki
    • Total Pages
      392
    • Publisher
      Cambridge University Press

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Published: 2010-06-10   Modified: 2023-01-13  

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