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ブール理論に基づく離散システムの構造解析と計算限界の研究

Research Project

Project/Area Number 16092217
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionThe University of Tokyo (2005-2008)
Osaka University (2004)

Principal Investigator

牧野 和久  The University of Tokyo, 大学院・情報理工学系研究科, 准教授 (60294162)

Project Period (FY) 2004 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥13,800,000 (Direct Cost: ¥13,800,000)
Fiscal Year 2007: ¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2006: ¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2005: ¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 2004: ¥2,600,000 (Direct Cost: ¥2,600,000)
Keywordsアルゴリズム / 離散構造 / フロー / 辺ランキング / 施設配置問題 / ソース配置問題 / 連結度 / ラミナー / 計算量 / 近似 / ポリベーシック多面体 / 近似アルゴリズム / 強NP困難 / 一般化フロー
Research Abstract

社会システムや産業活動などに関連して現れる生産計画,環境計画,スケジューリング,最適投資などを始めとする重要な問題の多くは,ブール理論あるいは,擬ブール理論に基づく離散システム上の問題として捉えることができる,例えば,線形計画問題(LP)も,有向マトロイドを用いて,擬ブール理論に基づく離散システム上の問題と見なせる,本研究では,これまで申請者が培ってきた(擬)ブール理論,劣モジュラ関数による構造解析手法を用いて,離散システムの有用な構造的性質の抽出し,その性質を利用することで,計算限界を明らかにすること(高速アルゴリズムの開発,および,計算量下界の提示)を試みた.本年度は最終年度として,ホーン理論の解構造の連結性,その内包,外包に対する演繹推論問題に対してその計算量を明らかにした。また,自己双対論理関数の彩色に関する特徴付け,ラミナー制約をもつ単調な凹関数最小化に対するアルゴリズムの開発,連結度要求に基づく施設配置問題に対する近似アルゴリズムの開発を行った.

Report

(4 results)
  • 2008 Annual Research Report
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (13 results)

All 2008 2007 2006 2005 2004

All Journal Article (13 results) (of which Peer Reviewed: 5 results)

  • [Journal Article] Minimizing a monotone concave function with laminar covering constraints.2008

    • Author(s)
      Mariko Sakashita, Kazuhisa Makino, Satoru Fujishige
    • Journal Title

      Discrete Applied Mathematics 156

      Pages: 2035-2049

    • NAID

      110002811978

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Minimum Cost Source Location Problems with Flow Requirements2008

    • Author(s)
      Mariko Sakashita, Kazuhisa Makino, Satoru Fujishige
    • Journal Title

      Algorithmica 50

      Pages: 555-583

    • NAID

      110002545917

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deductive Inference for the Interiors and Exteriors of Horn Theories2008

    • Author(s)
      Kazuhisa Makino, Hirotaka Ono
    • Journal Title

      ISAAC 2008, Lecture Notes in Computer Science 5369

      Pages: 390-401

    • NAID

      110006343679

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the Boolean Connectivity Problem for Horn Relations2007

    • Author(s)
      Kazuhisa Makino, Suguru Tamaki, Masaki Yamamoto
    • Journal Title

      SAT 2007, Lecture Notes in Computer Science 4501

      Pages: 187-200

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the Fractional Chromatic Number of Monotone Self-dual Boolean Functions2007

    • Author(s)
      Daya Ram Gaur, Kazuhisa Makino
    • Journal Title

      FAW 2007, Lecture Notes in Computer Science 4613

      Pages: 148-159

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] How to Collect Balls Moving in the Euclidean Plane2006

    • Author(s)
      Y.Asahiro, T.Horiyama, K.Makino, H.Ono, T.Sakuma
    • Journal Title

      Discrete Applied Mathematics 154

      Pages: 2247-2262

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Minimum Edge Ranking Spanning Trees of Split Graphs2006

    • Author(s)
      K.Makino, U.Uno, T.Ibaraki
    • Journal Title

      Discrete Applied Mathematics 154

      Pages: 2373-2386

    • Related Report
      2006 Annual Research Report
  • [Journal Article] An O (n log^2 n) algorithm for the optimal sink location problem in dynamic tree networks2006

    • Author(s)
      S.Mamada, T.Uno, K.Makino, S.Fujishige
    • Journal Title

      Discrete Applied Mathematics 154

      Pages: 2387-2401

    • NAID

      110002811977

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Minimum Transversals in Posi-modular Systems2006

    • Author(s)
      M.Sakashita, K.Makino, H.Nagamochi, S.Fujishige
    • Journal Title

      ESA 2006, Lecture Notes in Computer Science 4168

      Pages: 576-587

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Minimum Ciost Location Problems with Flow Requirements2006

    • Author(s)
      M.Sakashita, K.Makino, S.Fujishige
    • Journal Title

      Lecture Notes in Computer Science 3887

      Pages: 769-780

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Minimizing a Montone Concave Function with Laminar Covering Constraints. ISAAC 2005:2005

    • Author(s)
      M.Sakashita, K.Makino, S.Fujishige
    • Journal Title

      Lecture Notes in Computer Science 3827

      Pages: 71-81

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Polybasic polyhedra: Structure of polyhedra with edge vectors of support size at most 22004

    • Author(s)
      S.Fujishige
    • Journal Title

      Discrete Mathematics 208

      Pages: 13-27

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 無向ネットワーク中のソース配置問題に対する近似アルゴリズム2004

    • Author(s)
      坂下麻里子
    • Journal Title

      FIT2004 2

      Pages: 5-6

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2018-03-28  

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