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Sublinear-Time Paradigm

Research Project

Project/Area Number 15K11985
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Theory of informatics
Research InstitutionThe University of Electro-Communications

Principal Investigator

Ito Hiro  電気通信大学, 大学院情報理工学研究科, 教授 (50283487)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords定数時間アルゴリズム / 劣線形時間アルゴリズム / ビッグデータ / 複雑ネットワーク / グラフアルゴリズム / 性質検査 / 超有限性 / スケールフリー / 漸進型アルゴリズム / 階層構造 / 一般化将棋 / 計算複雑さ / ボードパズル / 超有限 / 分割信託 / 孤立クリーク / 一般化ボードパズル / ケーキ分割問題 / 分割神託
Outline of Final Research Achievements

The object of this project is establishing fundamental techniques for the “Sublinear-Time Paradigm.” The most remarkable result in this project is presenting a universal algorithm to complex networks, e.g., web graphs and social networks. That is, we define a class of (infinite) multigraphs, named HSF (Hierarchical Scale Free), which models a kind of hierarchical complex networks and prove that every property is constant-time testable for HSF. This is the first nontrivial universal constant-time algorithm on a graph class of sparse and degree-unbounded graphs, what is called the general graphs.

Academic Significance and Societal Importance of the Research Achievements

ビッグデータ時代においては、すべてのデータを読まず一部のデータのみから全体の性質を計算する、劣線形時間アルゴリズム、中でもどんなにデータが巨大になっても高々決まった量のデータしか読まない、定数時間アルゴリズムが重要になる。提案者はこれを「劣線形時間パラダイム」と名付け、そのための基本技術の開発に挑んでいる。今回の成果は、典型的なビッグデータである複雑ネットワークに対する非常に一般性のある定数時間アルゴリズムの提案であり、現実的なビッグデータに対して有効な定数時間アルゴリズムの理論的枠組みを世界で初めて与えた結果であり、理論的工学的インパクトは非常に高い。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (34 results)

All 2019 2018 2017 2016 2015 Other

All Int'l Joint Research (9 results) Journal Article (18 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 18 results,  Open Access: 12 results,  Acknowledgement Compliant: 8 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Int'l Joint Research] MIT/University of Nevada, Las Vegas(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Universite libre de Bruxelles(ベルギー)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Haifa(イスラエル)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Haifa(イスラエル)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] MIT(米国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] MIT(米国)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] University of Haifa(Israel)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] MIT(米国)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] University of Haifa(Israel)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Energy efficiency and renewable energy management with multi-state power-down system2019

    • Author(s)
      James Andro-Vasko, Wolfgang Bein, and Hiro Ito
    • Journal Title

      Information

      Volume: 10(2) Issue: 2 Pages: 44-44

    • DOI

      10.3390/info10020044

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Modulation-Adaptive Link-Disjoint Path Selection Model for 1+1 Protected Elastic Optical Networks2019

    • Author(s)
      Yuto Kishi, Nattapong Kitsuwan, Hiro Ito, Bijoy Chand Chatterjee, and Eiji Oki,
    • Journal Title

      IEEE Access

      Volume: 7 Pages: 25422-25437

    • DOI

      10.1109/access.2019.2901018

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cookie Clicker2019

    • Author(s)
      Erik D. Demaine, Hiro Ito, Stefan Langerman, Jayson Lynch, Mikhail Rudoy, Kai Xiao
    • Journal Title

      Graphs and Combinatorics

      Volume: (採録決定)

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Generalized shogi, chess, and xiangqui are constant-time testable2019

    • Author(s)
      Hiro Ito, Atsuki Nagao, and Teagun Park
    • Journal Title

      IEICE Transactions

      Volume: (採録決定)

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Bumpy pyramid folding2018

    • Author(s)
      Abel Zachary R.、Demaine Erik D.、Demaine Martin L.、Ito Hiro、Snoeyink Jack、Uehara Ryuhei
    • Journal Title

      Computational Geometry

      Volume: 75 Pages: 22-31

    • DOI

      10.1016/j.comgeo.2018.06.007

    • NAID

      120006676394

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Unfolding and Dissection of Multiple Cubes, Tetrahedra, and Doubly Covered Squares2017

    • Author(s)
      Zach Abel, Brad Ballinger, Erik Demaine, Martin Demaine, Jeff Erickson, Adam Hesterberg, Hiro Ito, Irina Kostitsyna, Jayson Lynch, and Ryuhei Uehara
    • Journal Title

      Journal of Information Processing

      Volume: 25 Issue: 0 Pages: 610-615

    • DOI

      10.2197/ipsjjip.25.610

    • NAID

      130005990898

    • ISSN
      1882-6652
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Much Faster Algorithm for Finding a Maximum Clique with Computational Experiments2017

    • Author(s)
      TOMITA Etsuji, MATSUZAKI Sora, NAGAO Atsuki, ITO Hiro, and WAKATSUKI Mitsuo
    • Journal Title

      Journal of Information Processing

      Volume: 25 Issue: 0 Pages: 667-677

    • DOI

      10.2197/ipsjjip.25.667

    • NAID

      130005990921

    • ISSN
      1882-6652
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Transforming Graphs with the Same Graphic Sequence2017

    • Author(s)
      Hiro Ito and Sergey Bereg
    • Journal Title

      Journal of Information Processing

      Volume: 25 Issue: 0 Pages: 627-633

    • DOI

      10.2197/ipsjjip.25.627

    • NAID

      130005990901

    • ISSN
      1882-6652
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Every property is testable on a natural class of scale-free multigraphs2016

    • Author(s)
      Hiro Ito
    • Journal Title

      Proceedings of the 24th European Symposium of Algorithms (ESA 2016), LIPICS

      Volume: 57

    • DOI

      10.4230/LIPIcs.ESA.2016.51

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Constant-time algorithms for complex networks2016

    • Author(s)
      Hiro Ito
    • Journal Title

      Proceedings of the Asian-Pacific World Congress on Computer Science 2016 (APWConCS 2016), IEEE Computer Society

      Volume: 1

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] How to solve the cake-cutting problem in sublinear time2016

    • Author(s)
      Hiro Ito and Takahiro Ueda
    • Journal Title

      Proceedings of the 8th International Conference on Fun with Algorithms (FUN2016), LIPICS, Vol. 49 (ISBN 978-3-95977-005-7)

      Volume: 49

    • DOI

      10.4230/LIPIcs.FUN.2016.21

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Folding a Paper Strip to Minimize Thickness2016

    • Author(s)
      Erik D. Demaine, David Eppstein, Adam Hesterberg, Hiro Ito, Anna Lubiw, Ryuhei Uehara, and Yushi Uno
    • Journal Title

      Journal of Discrete Algorithms

      Volume: 36 Pages: 18-26

    • DOI

      10.1016/j.jda.2015.09.003

    • NAID

      120006380546

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] A Much Faster Algorithm for Finding a Maximum Clique2016

    • Author(s)
      Etsuji Tomita, Kohei Yoshida, Takuro Hatta, Atsuki Nagao, Hiro Ito and Mitsuo Wakatsuki
    • Journal Title

      roceedings of the 10th International Frontiers of Algorithmics Workshop (FAW2016)

      Volume: 未定 Pages: 215-226

    • DOI

      10.1007/978-3-319-39817-4_21

    • ISBN
      9783319398167, 9783319398174
    • Related Report
      2016 Research-status Report 2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Number of ties and undefeated signs on a generalized janken2016

    • Author(s)
      Hiro Ito and Yoshinao Shiono
    • Journal Title

      Proceedings of the 18th Japan Conference on Discrete and Computational Geometry and Graphs (JCDCG^2 2015), LNCS, Springer

      Volume: 未定

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Single-Player and Two-Player Buttons & Scissors Games2016

    • Author(s)
      Kyle Burke, Erik D. Demaine, Harrison Gregg, Robert A. Hearn, Adam Hesterberg, Michael Hoffman, Hiro Ito, Irina Kostitsyna, Jody Leonard, Maarten Loffler, Christiane Schmidt, Ryuhei Uehara, Yushi Uno and Aaron Williams
    • Journal Title

      roceedings of the 18th Japan Conference on Discrete and Computational Geometry and Graphs (JCDCG^2 2015), LNCS, Springer

      Volume: 未定

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] ow to solve the cake-cutting problem in sublinear time2016

    • Author(s)
      Hiro Ito and Takahiro Ueda
    • Journal Title

      Proceedings of the 8th International Conference on Fun with Algorithms (FUN2016)

      Volume: 未定

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Generalized shogi and chess are constant-time tastable2015

    • Author(s)
      Hiro Ito, Atsuki Nagao, and Teagun Park
    • Journal Title

      roceedings of the 12th International Symposium on Operations Research & Its Applications (ISORA 2015), IET Digital Library

      Volume: なし Pages: 1-6

    • DOI

      10.1049/cp.2015.0601

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Computational complexity of inverse word search problem2015

    • Author(s)
      Hiro Ito and Shinnosuke Seki
    • Journal Title

      Proceedings of the 12th International Symposium on Operations Research & Its Applications (ISORA 2015), IET Digital Library

      Volume: なし Pages: 41-44

    • DOI

      10.1049/cp.2015.0607

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 階層構造に基づく複雑ネットワーク生成モデルの超有限性2018

    • Author(s)
      東園和樹, 伊藤大雄
    • Organizer
      電子通信学会コンピューテーション研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Packing polyominoes into a rectangle is constant-time testable2017

    • Author(s)
      Hiro Ito and Yoshihiro Takeda
    • Organizer
      The 20th Japan Conference on Discrete and Computational Geometry, Graphs, and Games (JCDCG^3 2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] K_3 edge cover in a wide sense2017

    • Author(s)
      Kyohei Chiba, Hiro Ito, and Atsuki Nagao
    • Organizer
      The 20th Japan Conference on Discrete and Computational Geometry, Graphs, and Games (JCDCG^3 2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 広義K_3辺被覆問題2017

    • Author(s)
      千葉恭平, ベルモント レミー, 伊藤大雄, 長尾篤樹
    • Organizer
      電子通信学会コンピューテーション研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] 2種類のアイテムに限定した物理的バケットソート2016

    • Author(s)
      長尾篤樹, 吉澤修平, 伊藤大雄
    • Organizer
      コンピューテーション研究会
    • Place of Presentation
      東北大学(宮城県・仙台市)
    • Related Report
      2016 Research-status Report
  • [Presentation] 物理的バケットソート2016

    • Author(s)
      John Iacono, 伊藤大雄, *長尾篤樹, 西野順二, David Rappaport
    • Organizer
      コンピューテーション研究会
    • Place of Presentation
      奈良先端科学技術大学院大学(奈良県・生駒市)
    • Related Report
      2016 Research-status Report
  • [Presentation] Generalized shogi and chess are constant-time tastable2015

    • Author(s)
      Hiro Ito, Atsuki Nagao, and Teagun Park
    • Organizer
      The 12th International Symposium on Operations Research & Its Applications (ISORA 2015)
    • Place of Presentation
      Luoyang, China
    • Year and Date
      2015-08-21
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2015-04-16   Modified: 2023-03-16  

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