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Fundamnetal techniques for knowledge discovery based on local importance

Research Project

Project/Area Number 19K20350
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 61030:Intelligent informatics-related
Research InstitutionHosei University (2022)
Toyohashi University of Technology (2020-2021)
National Institute of Informatics (2019)

Principal Investigator

Wasa Kunihiro  法政大学, 理工学部, 講師 (00781337)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords列挙アルゴリズム / データマイニング / 近傍領域 / 知識発見 / 列挙 / グラフ
Outline of Research at the Start

大量に蓄積されたデータにより,私たちは新たな知識を発見ができるようになった.一方で,その大量さは同時にこれまで利用できたデータマイニングアルゴリズムを適用できない規模となっている.本研究では,「近傍領域」と呼ばれる局所的な構造に着目することで,この状況を打破しようというものである.具体的には,次の二つの課題を設定した.これらの課題を克服することで,知識発見技術のさらなる発展を狙う.
課題1: 現実の問題に対する適切な「大事さ」に関するパラメータのモデル化
課題2: 課題1で得られたパラメータを元に,近傍領域を効率よく計算するアルゴリズムの開発

Outline of Final Research Achievements

Throughout the entire period, we were able to get a basic idea for a framework for developing enumeration or reconfiguration algorithms. However, the other goal, that is, revealing "what is the importance measure of problems" did not achieve. The specific reason for this may come from the difficulty of meeting people in the other field due to the extreme decrease in human interaction caused by the Corona disaster. Recently, when we develop an algorithm, users ask us to clarify "why such a solution is outputted?" This kind of explainability is highly demanded such as k-best enumeration, which have non-explicit indicators behind them as well as machine learning. We will continue to address this topic after the completion of this project.

Academic Significance and Societal Importance of the Research Achievements

列挙問題,つまり,一定条件を満たした解を全て列挙する問題はさまざまな分野において見られる基礎的な問題である.本研究成果の学術的意義は,本課題の一つの課題である種々の問題に対する列挙アルゴリズムの構築を実際に行った点である.一方で,このアルゴリズムを利用して"解きたい問題"においては何に着目したら良いかを導き出す,というもう一つの課題については成果を上げられなかった.この点については,今後同様の問題意識を持って取り組み成果を上げていきたい.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (14 results)

All 2022 2021 2020 2019

All Journal Article (13 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 13 results,  Open Access: 4 results) Presentation (1 results)

  • [Journal Article] Constant amortized time enumeration of Eulerian trails2022

    • Author(s)
      Kurita Kazuhiro、Wasa Kunihiro
    • Journal Title

      Theoretical Computer Science

      Volume: 923 Pages: 1-12

    • DOI

      10.1016/j.tcs.2022.04.048

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Polynomial-Delay and Polynomial-Space Enumeration of Large Maximal Matchings2022

    • Author(s)
      Kobayashi Yasuaki、Kurita Kazuhiro、Wasa Kunihiro
    • Journal Title

      48TH INTERNATIONAL WORKSHOP ON GRAPH-THEORETIC CONCEPTS IN COMPUTER SCIENCE

      Volume: - Pages: 342-355

    • DOI

      10.1007/978-3-031-15914-5_25

    • ISBN
      9783031159138, 9783031159145
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Linear-Delay Enumeration for Minimal Steiner Problems2022

    • Author(s)
      Kobayashi Yasuaki、Kurita Kazuhiro、Wasa Kunihiro
    • Journal Title

      PODS '22: Proceedings of the 41st ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems

      Volume: - Pages: 301-313

    • DOI

      10.1145/3517804.3524148

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reconfiguration of Regular Induced Subgraphs2022

    • Author(s)
      Eto Hiroshi、Ito Takehiro、Kobayashi Yasuaki、Otachi Yota、Wasa Kunihiro
    • Journal Title

      Lecture Notes in Computer Science

      Volume: 13174 Pages: 35-46

    • DOI

      10.1007/978-3-030-96731-4_4

    • ISBN
      9783030967307, 9783030967314
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Reconfiguration of Spanning Trees with Degree Constraint or Diameter Constraint2022

    • Author(s)
      Nicolas Bousquet, Takehiro Ito, Yusuke Kobayashi, Haruka Mizuta, Paul Ouvrard, Akira Suzuki, Kunihiro Wasa
    • Journal Title

      Proc. 39th International Symposium on Theoretical Aspects of Computer Science (STACS 2022)

      Volume: 219

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A constant amortized time enumeration algorithm for independent sets in graphs with bounded clique number2021

    • Author(s)
      Kurita Kazuhiro、Wasa Kunihiro、Uno Takeaki、Arimura Hiroki
    • Journal Title

      Theoretical Computer Science

      Volume: - Pages: 32-41

    • DOI

      10.1016/j.tcs.2021.05.008

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Efficient enumeration of dominating sets for sparse graphs2021

    • Author(s)
      Kurita Kazuhiro、Wasa Kunihiro、Arimura Hiroki、Uno Takeaki
    • Journal Title

      Discrete Applied Mathematics

      Volume: 303 Pages: 283-295

    • DOI

      10.1016/j.dam.2021.06.004

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Reconfiguring Directed Trees in a Digraph2021

    • Author(s)
      Ito Takehiro、Iwamasa Yuni、Kobayashi Yasuaki、Nakahata Yu、Otachi Yota、Wasa Kunihiro
    • Journal Title

      Lecture Notes in Computer Science

      Volume: 13025 Pages: 343-354

    • DOI

      10.1007/978-3-030-89543-3_29

    • ISBN
      9783030895426, 9783030895433
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Optimal reconfiguration of optimal ladder lotteries2021

    • Author(s)
      Katsuhisa Yamanaka, Takashi Horiyama, Kunihiro Wasa
    • Journal Title

      Theoretical Computer Science

      Volume: 859 Pages: 57-69

    • DOI

      10.1016/j.tcs.2021.01.009

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] CompRet: a comprehensive recommendation framework for chemical synthesis planning with algorithmic enumeration2020

    • Author(s)
      Ryosuke Shibukawa, Shoichi Ishida, Kazuki Yoshizoe, Kunihiro Wasa, Kiyosei Takasu, Yasushi Okuno, Kei Terayama, Koji Tsuda
    • Journal Title

      Journal of Cheminformatics

      Volume: 12 Issue: 1

    • DOI

      10.1186/s13321-020-00452-5

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Diameter of colorings under Kempe changes2020

    • Author(s)
      Bonamy Marthe、Heinrich Marc、Ito Takehiro、Kobayashi Yusuke、Mizuta Haruka、Muehlenthaler Moritz、Suzuki Akira、Wasa Kunihiro
    • Journal Title

      Theoretical Computer Science

      Volume: 838 Pages: 45-57

    • DOI

      10.1016/j.tcs.2020.05.033

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Maximal strongly connected cliques in directed graphs: Algorithms and bounds2020

    • Author(s)
      Alessio Conte, Mamadou Moustapha Kante;, Takeaki Uno, Kunihiro Wasa
    • Journal Title

      Discrete Applied Mathematics

      Volume: in press Pages: 237-252

    • DOI

      10.1016/j.dam.2020.05.027

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Listing Induced Steiner Subgraphs as a Compact Way to Discover Steiner Trees in Graphs2019

    • Author(s)
      Alessio Conte, Roberto Grossi, Mamadou Moustapha Kante, Andrea Marino, Takeaki Uno, and Kunihiro Wasa
    • Journal Title

      Proceedings of The 44th International Symposium on Mathematical Foundations of Computer Science (MFCS 2019)

      Volume: 118

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Polynomial Delay Enumeration for Steiner Problems2020

    • Author(s)
      小林 靖明, 栗田 和宏, 和佐 州洋
    • Organizer
      電子情報通信学会 コンピュテーション研究会
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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