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2008 Fiscal Year Self-evaluation Report

Construction of Geometric Data Processing Optimization Theory by using Global Norms

Research Project

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Project/Area Number 18300001
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Fundamental theory of informatics
Research InstitutionTohoku University

Principal Investigator

TOKUYAMA Takeshi  Tohoku University, 大学院・情報科学研究科, 教授 (40312631)

Project Period (FY) 2006 – 2009
Keywordsアルゴリズム理論 / 計算幾何学
Research Abstract

誤差に対して頑健な大域的なノルムを用いた解析的な関数近似と、幾何学形状を重んじた図形的な形状近似2つの考え方を融合し、出力の幾何学的形状を計算幾何学的な離散構造で指定し、精度基準として積分型ノルム等の大域的尺度を扱える最適化理論を構築する。
科学研究費の交付期間内では、特に入力を点集合または離散的に与えた1変数または2変数の区分線形関数の軌跡に絞り、出力形状のピーク数や位相的・離散的性質を出力の品質要求として与え、最適化理論を研究し、また、曲線・曲面構築問題の新しい手法として実装実験も行う。

  • Research Products

    (16 results)

All 2009 2008 2007 2006 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results) Presentation (5 results) Book (2 results)

  • [Journal Article] Proceedings of WALCOM 20092008

    • Author(s)
      Sang Won Bae, Matias Korman, Takeshi Tokuyama
    • Journal Title

      Springer LNCS 5431

      Pages: 71-82

    • Peer Reviewed
  • [Journal Article] Optimal Insertion of a Segment Highway in a City Metric, Proceedings of COCOON 20082008

    • Author(s)
      Matias Korman, Takeshi Tokuyama
    • Journal Title

      Springer LNCS 5092

      Pages: 611-620

    • Peer Reviewed
  • [Journal Article] Minimizing interference of a wireless ad-hoc network in a plane2008

    • Author(s)
      M. M. Halldorsson, Takeshi Tokuyama
    • Journal Title

      Theoretical Computer Science 402-1

      Pages: 29-42

    • Peer Reviewed
  • [Journal Article] Consistent digital rays2008

    • Author(s)
      J. Chun, M. Korman, M.Nollenburg, T. Tokuyama
    • Journal Title

      Proceedings of 24^<th> ACM Symposium on Computational Geometry

      Pages: 355-364

    • Peer Reviewed
  • [Journal Article] Dense subgraph problems with output-density conditions2008

    • Author(s)
      A. Suzuki, T.Tokuyama
    • Journal Title

      ACM Transaction on Algorithms 4(4)

      Pages: 43(1)-43(18)

    • Peer Reviewed
  • [Journal Article] Recent progress on combinatorics and algorithms for low discrepancy roundings2007

    • Author(s)
      Takeshi Tokuyama
    • Journal Title

      Graphs and Combinatorics 23

      Pages: 359-378

    • Peer Reviewed
  • [Journal Article] 関数近似における幾何学アルゴリズムの最近の進展 : データ解析への応用に向けて2006

    • Author(s)
      徳山豪
    • Journal Title

      電子情報通信学会論文誌A J89-A

    • Peer Reviewed
  • [Journal Article] Polyline Fitting of Planar Points under Min-sum Criteria2006

    • Author(s)
      B. Aronov, T. Asano, N. Katoh, K. Mehlhorn, T. Tokuyama
    • Journal Title

      Int. J. Comput. Geometry Appl. 16(2-3)

    • Peer Reviewed
  • [Journal Article] Linear Time Algorithm for Approximating a Curve by a Single-peaked Curve2006

    • Author(s)
      J. Chun, K. Sadakane, T. Tokuyama
    • Journal Title

      Algorithmica 44(2)

      Pages: 103-115

    • Peer Reviewed
  • [Presentation] An Improved Algorithm for Inserting a Highway in a City Metric Based on Minimization of Quasiconvex Functions European Symposium on Computational Geometry2009

    • Author(s)
      Matias Korman, and Takeshi Tokuyama
    • Organizer
      ブリュッセル
    • Place of Presentation
      ベルギー
    • Year and Date
      2009-03-16
  • [Presentation] Finding the maximum union of closures is NP-hard, even for trees2008

    • Author(s)
      J. Chun, M. Korman, M.Nollenburg, T. Tokuyama
    • Organizer
      Proceedings of 11^<th> WAAC, Japan-Korea Workshop on Algorithms
    • Place of Presentation
      札幌
    • Year and Date
      2008-07-20
  • [Presentation] Optimal insertion of a segment highway in a city metric 1^<st> Annual Meeting of Asian Association of Algorithms and Computation2008

    • Author(s)
      Matias Korman, and Takeshi Tokuyama
    • Place of Presentation
      Hong Kong中国
    • Year and Date
      2008-04-20
  • [Presentation] Digital Star Shapes and Their Applications2008

    • Author(s)
      J. Chun, M. Korman, M. Nollenburg, T. Tokuyama
    • Organizer
      1^<st> Annual Meeting of Asian Association of Algorithms and Computation
    • Place of Presentation
      Hong Kong中国
    • Year and Date
      2008-04-20
  • [Presentation] Voronoi Diagram with Respect to Criteria on Vision Information2007

    • Author(s)
      Tetsuo Asano, Naoki Katoh, Hisao Tamaki, Takeshi Tokuyama
    • Organizer
      4^<th> International Symposium on Voronoi diagram
    • Place of Presentation
      Glamorganイギリス
    • Year and Date
      2007-07-10
  • [Book] オンラインアルゴリズムとストリームアルゴリズム2007

    • Author(s)
      徳山豪
    • Total Pages
      224
    • Publisher
      共立出版
  • [Book] Algorithms and Computation, Proceedings of ISAAC 2007

    • Author(s)
      Takeshi Tokuyama
    • Total Pages
      929
    • Publisher
      Springer LNCS

URL: 

Published: 2010-06-11   Modified: 2016-04-21  

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