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Development of Combinatorial Reconfiguration by Mathematics Approach: From Examples to New Methods

Planned Research

Project AreaFusion of Computer Science, Engineering and Mathematics Approaches for Expanding Combinatorial Reconfiguration
Project/Area Number 20H05795
Research Category

Grant-in-Aid for Transformative Research Areas (B)

Allocation TypeSingle-year Grants
Review Section Transformative Research Areas, Section (IV)
Research InstitutionThe University of Electro-Communications

Principal Investigator

OKAMOTO Yoshio  電気通信大学, 大学院情報理工学研究科, 教授 (00402660)

Co-Investigator(Kenkyū-buntansha) 神山 直之  九州大学, マス・フォア・インダストリ研究所, 教授 (10548134)
小関 健太  横浜国立大学, 大学院環境情報研究院, 准教授 (10649122)
垣村 尚徳  慶應義塾大学, 理工学部(矢上), 准教授 (30508180)
小林 佑輔  京都大学, 数理解析研究所, 准教授 (40581591)
野崎 雄太  広島大学, 先進理工系科学研究科(理), 助教 (40822648)
岩政 勇仁  京都大学, 情報学研究科, 助教 (70854602)
前澤 俊一  東京理科大学, 理学部第二部数学科, 助教 (70905934)
Project Period (FY) 2020-10-02 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥47,190,000 (Direct Cost: ¥36,300,000、Indirect Cost: ¥10,890,000)
Fiscal Year 2022: ¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2021: ¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2020: ¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
Keywords組合せ遷移 / 数学 / 離散数学 / アルゴリズム / 計算複雑性
Outline of Research at the Start

組合せ遷移とは「状態空間上での遷り変り」を数理モデル化・解析するアルゴリズム理論であり,その概念は,理論から応用まで多種多様な分野に現れる.本研究領域では,組合せ遷移のアルゴリズム基盤,実装技術基盤,数学基盤を構築することで,研究でも実務でも障壁なく,組合せ遷移のアルゴリズム技術を利活用するための共通基盤を構築する.本研究は計画研究C01班であり,数学を背景分野とする.特に,組合せ遷移における数学活用事例の体系的収集と組合せ遷移の研究に資する数理手法の開発を推進する.これにより,個別的にアドホックな手法で研究されていた組合せ遷移を,数学の視点から組織的に捉え直し,体系化を図る.

Outline of Final Research Achievements

During the research project period (including the extension), we obtained 89 papers, 52 presentations, and 2 books. Below are summaries of two notable results. (1) In the study of systematic collections of mathematical utility in combinatorial reconfiguration, we explored a combinatorial reconfiguration problem from algorithmic game theory. We conducted a computational complexity analysis and designed an efficient algorithm. This work was presented at the prestigious AAAI 2022 conference. (2) In developing mathematical methodologies for combinatorial reconfiguration, we investigated a graph-theoretic problem. Our research introduced a novel method based on combinatorial reconfiguration, which proved a well-known theorem in graph theory literature. This work was presented at the prestigious SODA 2022 conference.

Academic Significance and Societal Importance of the Research Achievements

組合せ遷移の研究に資する数学理論の構築に向けて,大きな成果を得ることができた.また,他の計画研究 (計算機科学のA01班,工学のB01班) と相補的な協働をすることで,組合せ遷移の社会実装に近づくことができた.国内における研究普及活動に加えて,国際ワークショップの主催,国際会議での発表を通じて,組合せ遷移研究における日本の研究者のリーダーシップとプレゼンスを強化することができた.

Report

(4 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (183 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (18 results) Journal Article (93 results) (of which Int'l Joint Research: 29 results,  Peer Reviewed: 76 results,  Open Access: 56 results) Presentation (62 results) (of which Int'l Joint Research: 28 results,  Invited: 11 results) Book (2 results) Remarks (1 results) Funded Workshop (7 results)

  • [Int'l Joint Research] ビンガムトン大学/コルゲート大学/バージニア・コモンウェルス大学(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] 復旦大学/青海師範大学/中国計量大学(中国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] リヨン大学/ボルドー大学/グルノーブル・アルプ大学(フランス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] レニィ数学研究所/エトヴェシュ・ロラーンド大学(ハンガリー)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] ブレーメン大学/ハインリッヒ・ハイネ大学デュッセルドルフ(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] ドルトムント工科大学/ヴュルツブルク大学/ボン大学(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] リヨン大学/ボルドー大学/パリ=サクレー大学(フランス)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] カリフォルニア大学サンタバーバラ/グーグル研究所/シーメンス(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] フルミネンセ連邦大学/カンピーナス大学(ブラジル)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] ウィーン工科大学/グラーツ工科大学(オーストリア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] ドルトムント工科大学/ヴュルツブルク大学/マックス・プランク情報学研究所(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] リヨン大学/ボルドー大学/グルノーブル・アルプ大学(フランス)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] カリフォルニア大学サンタバーバラ/グーグル研究所/ビンガムトン大学(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] ユトレヒト大学/アイントホーフェン工科大学/アディエン(オランダ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] エトヴェシュ・ロラーンド大学/レーニ研究所(ハンガリー)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2020 Annual Research Report
  • [Journal Article] A graph minor condition for graphs to be <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e404" altimg="si21.svg"><mml:mi>k</mml:mi></mml:math>-linked2024

    • Author(s)
      Maezawa Shun-ichi
    • Journal Title

      European Journal of Combinatorics

      Volume: 116 Pages: 103874-103874

    • DOI

      10.1016/j.ejc.2023.103874

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A combinatorial algorithm for computing the entire sequence of the maximum degree of minors of a generic partitioned polynomial matrix with 2x2 submatrices2024

    • Author(s)
      Yuni Iwamasa
    • Journal Title

      Mathematical Programming, Series A

      Volume: 204 Issue: 1-2 Pages: 27-79

    • DOI

      10.1007/s10107-023-01949-1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reachability of fair allocations via sequential exchanges2024

    • Author(s)
      Ayumi Igarashi, Naoyuki Kamiyama, Warut Suksompong, Yuen Sheung Man
    • Journal Title

      Proc. of 38th AAAI Conference on Artificial Intelligence (AAAI 2024)

      Volume: -- Issue: 9 Pages: 9773-9780

    • DOI

      10.1609/aaai.v38i9.28836

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The strongly stable matching problem with closures2024

    • Author(s)
      Naoyuki Kamiyama
    • Journal Title

      arXiv

      Volume: --

    • Related Report
      2022 Annual Research Report
    • Open Access
  • [Journal Article] Modifying an instance of the super-stable matching problem2024

    • Author(s)
      Naoyuki Kamiyama
    • Journal Title

      arXiv

      Volume: --

    • Related Report
      2022 Annual Research Report
    • Open Access
  • [Journal Article] Characterizations of the set of integer points in an integral bisubmodular polyhedron2024

    • Author(s)
      Yuni Iwamasa
    • Journal Title

      Discrete Mathematics

      Volume: 347 Issue: 4 Pages: 113855-113855

    • DOI

      10.1016/j.disc.2023.113855

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] CoRe Challenge 2022/2023: Empirical evaluations for independent set reconfiguration problems (Extended Abstract)2024

    • Author(s)
      Takehide Soh, Tomoya Tanjo, Yoshio Okamoto, Takehiro Ito
    • Journal Title

      Proc. of 17th International Symposium on Combinatorial Search (SoCS 2024)

      Volume: --

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Note on 3-Distance Coloring of Planar Graphs2024

    • Author(s)
      Hasanvand Morteza、Ozeki Kenta
    • Journal Title

      Bulletin of the Iranian Mathematical Society

      Volume: 50 Issue: 2 Pages: 25-25

    • DOI

      10.1007/s41980-023-00848-7

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] randomized counter-based algorithms for frequency estimation over data streams in O(log log N) space2024

    • Author(s)
      Naonori Kakimura, Riku Nitta
    • Journal Title

      Theoretical Computer Science

      Volume: 984 Pages: 114317-114317

    • DOI

      10.1016/j.tcs.2023.114317

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pareto efficient matchings with pairwise preferences2023

    • Author(s)
      Naoyuki Kamiyama
    • Journal Title

      Theoretical Computer Science

      Volume: 948 Pages: 113707-113707

    • DOI

      10.1016/j.tcs.2023.113707

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reconfiguring (non-spanning) arborescences2023

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

      Theoretical Computer Science

      Volume: 943 Pages: 131-141

    • DOI

      10.1016/j.tcs.2022.12.007

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A framework to design approximation algorithms for finding diverse solutions in combinatorial problems2023

    • Author(s)
      Tesshu Hanaka, Masashi Kiyomi, Yasuaki Kobayashi, Yusuke Kobayashi, Kazuhiro Kurita, Yota Otachi
    • Journal Title

      Proc. of 37th AAAI Conference on Artificial Intelligence (AAAI 2023), AAAI-23 Technical Tracks 4

      Volume: 37 Issue: 4 Pages: 3968-3976

    • DOI

      10.1609/aaai.v37i4.25511

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A 2-Bisection with Small Number of Monochromatic Edges of a Claw-Free Cubic Graph2023

    • Author(s)
      Seungjae Eom, Kenta Ozeki
    • Journal Title

      Graphs and Combinatorics

      Volume: 39 Issue: 1 Pages: 1-18

    • DOI

      10.1007/s00373-023-02611-5

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Monotone edge flips to an orientation of maximum edge-connectivity a la Nash-Williams2023

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Journal Title

      ACM Transactions on Algorithms

      Volume: 19 Issue: 1 Pages: 6-6

    • DOI

      10.1145/3561302

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Graphs with large total angular resolution2023

    • Author(s)
      Oswin Aichholzer, Matias Korman, Yoshio Okamoto, Irene Parada, Daniel Perz, Andre van Renssen, Birgit Vogtenhuber
    • Journal Title

      Theoretical Computer Science

      Volume: 943 Pages: 73-88

    • DOI

      10.1016/j.tcs.2022.12.010

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Reconfiguration of Time-Respecting Arborescences2023

    • Author(s)
      Ito Takehiro、Iwamasa Yuni、Kamiyama Naoyuki、Kobayashi Yasuaki、Kobayashi Yusuke、Maezawa Shun-ichi、Suzuki Akira
    • Journal Title

      Algorithms and Data Structures (WADS 2023)

      Volume: 14079 Pages: 521-532

    • DOI

      10.1007/978-3-031-38906-1_34

    • ISBN
      9783031389054, 9783031389061
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rerouting planar curves and disjoint paths2023

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Journal Title

      Proc. of 50th EATCS International Colloquium on Automata, Languages and Programming (ICALP 2023), Leibniz International Proceedings in Informatics

      Volume: 261

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reconfiguration and Enumeration of Optimal Cyclic Ladder Lotteries2023

    • Author(s)
      Nozaki Yuta、Wasa Kunihiro、Yamanaka Katsuhisa
    • Journal Title

      Proceedings of the 34th International Workshop on Combinatorial Algorithms (IWOCA 2023)

      Volume: - Pages: 331-342

    • DOI

      10.1007/978-3-031-34347-6_28

    • ISBN
      9783031343469, 9783031343476
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fixed-parameter algorithms for graph constraint logic2023

    • Author(s)
      Tatsuhiko Hatanaka, Felix Hommelsheim, Takehiro Ito, Yusuke Kobayashi, Moritz Muhlenthaler, Akira Suzuki
    • Journal Title

      Theoretical Computer Science

      Volume: 959 Pages: 113863-113863

    • DOI

      10.1016/j.tcs.2023.113863

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Reconfiguration of spanning trees with degree constraints or diameter constraints2023

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

      Algorithmica

      Volume: - Issue: 9 Pages: 2779-2816

    • DOI

      10.1007/s00453-023-01117-z

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Feedback vertex set reconfiguration in planar graphs2023

    • Author(s)
      Bousquet Nicolas、Hommelsheim Felix、Kobayashi Yusuke、M?hlenthaler Moritz、Suzuki Akira
    • Journal Title

      Theoretical Computer Science

      Volume: 979 Pages: 114188-114188

    • DOI

      10.1016/j.tcs.2023.114188

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On reachable assignments under dichotomous preferences2023

    • Author(s)
      Ito Takehiro、Kakimura Naonori、Kamiyama Naoyuki、Kobayashi Yusuke、Nozaki Yuta、Okamoto Yoshio、Ozeki Kenta
    • Journal Title

      Theoretical Computer Science

      Volume: 979 Pages: 114196-114196

    • DOI

      10.1016/j.tcs.2023.114196

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Algorithmic theory of qubit routing2023

    • Author(s)
      Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yoshio Okamoto
    • Journal Title

      Proc. of 18th Algorithms and Data Structures Symposium (WADS 2023), Lecture Notes in Computer Science

      Volume: 14079 Pages: 533-546

    • DOI

      10.1007/978-3-031-38906-1_35

    • ISBN
      9783031389054, 9783031389061
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reconfiguration of the union of arborescences2023

    • Author(s)
      Yusuke Kobayashi, Ryoga Mahara, Tamas Schwarcz
    • Journal Title

      Proc. of 34th International Symposium on Algorithms and Computation (ISAAC 2023), Leibniz International Proceedings in Informatics

      Volume: 283

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Note on fair game edge-connectivity of graphs2023

    • Author(s)
      Furuya Michitaka、Matsumoto Naoki、Ohno Yumiko、Ozeki Kenta
    • Journal Title

      Discrete Applied Mathematics

      Volume: 333 Pages: 132-135

    • DOI

      10.1016/j.dam.2023.03.024

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Spanning Tree with at Most k Leaves in a K_{1, p}-Free Graph2023

    • Author(s)
      Kenta Ozeki, Masao Tsugaki
    • Journal Title

      The Electronic Journal of Combinatorics

      Volume: 30 Issue: 4

    • DOI

      10.37236/11698

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deterministic primal-dual algorithms for online k-way matching with delays2023

    • Author(s)
      Naonori Kakimura, Tomohiro Nakayoshi
    • Journal Title

      Proc. of 29th International Computing and Combinatorics Conference (COCOON 2023), Lecture Notes in Computer Science

      Volume: 14423 Pages: 238-249

    • DOI

      10.1007/978-3-031-49193-1_18

    • ISBN
      9783031491924, 9783031491931
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Reconfiguration of colorings in triangulations of the sphere2023

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Journal Title

      Proc. of 39th International Symposium on Computational Geometry (SoCG 2023), Leibniz International Proceedings in Informatics

      Volume: 258

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Characterizations of the set of integer points in an integral bisubmodular polyhedron2023

    • Author(s)
      Yuni Iwamasa
    • Journal Title

      arXiv

      Volume: --

    • Related Report
      2022 Annual Research Report
    • Open Access
  • [Journal Article] Algebraic combinatorial optimization on the degree of determinants of noncommutative symbolic matrices2023

    • Author(s)
      Hiroshi Hirai, Yuni Iwamasa, Taihei Oki, Tasuku Soma
    • Journal Title

      arXiv

      Volume: --

    • Related Report
      2022 Annual Research Report
    • Open Access
  • [Journal Article] Finding a maximum restricted t-matching via Boolean edge-CSP2023

    • Author(s)
      Yuni Iwamasa, Yusuke Kobayashi, Kenjiro Takazawa
    • Journal Title

      arXiv

      Volume: --

    • Related Report
      2022 Annual Research Report
    • Open Access
  • [Journal Article] Minimum separator reconfiguration2023

    • Author(s)
      Guilherme C. M. Gomes, Clement Legrand-Duchesne, Reem Mahmoud, Amer E. Mouawad, Yoshio Okamoto, Vinicius F. dos Santos, Tom C. van der Zanden
    • Journal Title

      arXiv

      Volume: --

    • Related Report
      2022 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] On connectedness of solutions to integer linear systems2023

    • Author(s)
      Takasugu Shigenobu, Naoyuki Kamiyama
    • Journal Title

      Proc. of 16th Annual International Conference on Combinatorial Optimization and Applications (COCOA 2023), Lecture Notes in Computer Science

      Volume: 14461 Pages: 421-433

    • DOI

      10.1007/978-3-031-49611-0_30

    • ISBN
      9783031496103, 9783031496110
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hardness of finding combinatorial shortest paths on graph associahedra2023

    • Author(s)
      Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto
    • Journal Title

      Proc. of 50th EATCS International Colloquium on Automata, Languages and Programming (ICALP 2023), Leibniz International Proceedings in Informatics

      Volume: 261

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] H-colorings for 4-regular graphs2023

    • Author(s)
      Analen A. Malnegro, Kenta Ozeki
    • Journal Title

      Discrete Mathematics

      Volume: 347 Issue: 3 Pages: 113844-113844

    • DOI

      10.1016/j.disc.2023.113844

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Minimum separator reconfiguration2023

    • Author(s)
      Guilherme C. M. Gomes, Clement Legrand-Duchesne, Reem Mahmoud, Amer E. Mouawad, Yoshio Okamoto, Vinicius F. dos Santos, Tom C. van der Zanden
    • Journal Title

      Proc. of 18th International Symposium on Parameterized and Exact Computation (IPEC 2023), Leibniz International Proceedings in Informatics

      Volume: 285

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Independent set reconfiguration on directed graphs2022

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

      Proc. of 47th International Symposium on Mathematical Foundations of Computer Science (MFCS 2022), Leibniz International Proceedings in Informatics

      Volume: 241

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] An Improved Deterministic Parameterized Algorithm for Cactus Vertex Deletion2022

    • Author(s)
      Aoike Yuuki、Gima Tatsuya、Hanaka Tesshu、Kiyomi Masashi、Kobayashi Yasuaki、Kobayashi Yusuke、Kurita Kazuhiro、Otachi Yota
    • Journal Title

      Theory of Computing Systems

      Volume: 66 Issue: 2 Pages: 502-515

    • DOI

      10.1007/s00224-022-10076-x

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A parameterized view to the robust recoverable base problem of matroids under structural uncertainty2022

    • Author(s)
      Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yoshio Okamoto
    • Journal Title

      Operations Research Letters

      Volume: 50 Issue: 3 Pages: 370-375

    • DOI

      10.1016/j.orl.2022.05.001

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Weight balancing on boundaries2022

    • Author(s)
      Luis Barba, Otfried Cheong, Michael Gene Dobbins, Rudolf Fleischer, Akitoshi Kawamura, Matias Korman, Yoshio Okamoto, Janos Pach, Yuan Tang, Takeshi Tokuyama, Sander Verdonschot
    • Journal Title

      Journal of Computational Geometry

      Volume: 13 Pages: 1-12

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  • [Journal Article] Reforming an envy-free matching2022

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Journal Title

      arXiv

      Volume: --

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    • Open Access
  • [Journal Article] An Even 2-Factor in the Line Graph of a Cubic Graph2022

    • Author(s)
      SeungJae Eom, Kenta Ozeki
    • Journal Title

      Theory and Applications of Graphs

      Volume: 9 Issue: 1 Pages: 7-7

    • DOI

      10.20429/tag.2022.090107

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  • [Journal Article] Algorithms for coloring reconfiguration under recolorability digraphs2022

    • Author(s)
      Soichiro Fujii, Yuni Iwamasa, Kei Kimura, Akira Suzuki
    • Journal Title

      Proc. of 33rd International Symposium on Algorithms and Computation (ISAAC 2022), Leibniz International Proceedings in Informatics

      Volume: 248

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  • [Journal Article] Rerouting planar curves and disjoint paths2022

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Journal Title

      arXiv

      Volume: --

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      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Reconfiguration of colorings in triangulations of the sphere2022

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Journal Title

      arXiv

      Volume: --

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  • [Journal Article] Arithmetic progressions, quasi progressions, and Gallai-Ramsey colorings2022

    • Author(s)
      Yaping Mao, Kenta Ozeki, Aaron Robertson, Zhao Wang
    • Journal Title

      Journal of Combinatorial Theory, Series A

      Volume: 193 Pages: 105672-105672

    • DOI

      10.1016/j.jcta.2022.105672

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      2022 Annual Research Report
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  • [Journal Article] Characterization of (m,n)-Linked Planar Graphs2022

    • Author(s)
      Enami Kengo、Maezawa Shun-ichi
    • Journal Title

      Graphs and Combinatorics

      Volume: 38 Issue: 4 Pages: 131-131

    • DOI

      10.1007/s00373-022-02537-4

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Special Case of Rota's Basis Conjecture on Graphic Matroids2022

    • Author(s)
      Maezawa Shun-ichi、Yazawa Akiko
    • Journal Title

      The Electronic Journal of Combinatorics

      Volume: 29 Issue: 3

    • DOI

      10.37236/10835

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On reachable assignments under dichotomous preferences2022

    • Author(s)
      Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Journal Title

      Proc. of 24th International Conference on Principles and Practice of Multi-Agent Systems (PRIMA 2022), Lecture Notes in Computer Science

      Volume: 13753 Pages: 650-658

    • DOI

      10.1007/978-3-031-21203-1_43

    • ISBN
      9783031212024, 9783031212031
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      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Kempe Equivalence Classes of Cubic Graphs Embedded on the Projective Plane2022

    • Author(s)
      Kenta Ozeki
    • Journal Title

      Combinatorica

      Volume: 42 Issue: S2 Pages: 1451-1480

    • DOI

      10.1007/s00493-021-4330-2

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Maximum properly colored trees in edge-colored graphs2022

    • Author(s)
      Jie Hu, Hao Li, Shun-ichi Maezawa
    • Journal Title

      Journal of Combinatorial Optimization

      Volume: 44 Issue: 1 Pages: 154-171

    • DOI

      10.1007/s10878-021-00824-z

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      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Reforming an envy-free matching2022

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Journal Title

      Proc. of 36th AAAI Conference on Artificial Intelligence (AAAI 2022)

      Volume: 36 Issue: 5 Pages: 5084-5091

    • DOI

      10.1609/aaai.v36i5.20441

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [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

      arXiv

      Volume: --

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      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] A framework to design approximation algorithms for finding diverse solutions in combinatorial problems2022

    • Author(s)
      Tesshu Hanaka, Masashi Kiyomi, Yasuaki Kobayashi, Yusuke Kobayashi, Kazuhiro Kurita, Yota Otachi
    • Journal Title

      arXiv

      Volume: --

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Linear-Time Recognition of Double-Threshold Graphs2022

    • Author(s)
      Yusuke Kobayashi, Yoshio Okamoto, Yota Otachi, Yushi Uno
    • Journal Title

      Algorithmica 84(4): 1163-1181 (2022)

      Volume: 84 Issue: 4 Pages: 1163-1181

    • DOI

      10.1007/s00453-021-00921-9

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      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Monotone edge flips to an orientation of maximum edge-connectivity ? la Nash-Williams2022

    • Author(s)
      Ito Takehiro、Iwamasa Yuni、Kakimura Naonori、Kamiyama Naoyuki、Kobayashi Yusuke、Maezawa Shun-ichi、Nozaki Yuta、Okamoto Yoshio、Ozeki Kenta
    • Journal Title

      Proceedings of the 2022 Annual ACM-SIAM Symposium on Discrete Algorithms (SODA)

      Volume: なし Pages: 1342-1355

    • DOI

      10.1137/1.9781611977073.56

    • ISBN
      9781611977073
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      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] On the kernel of the surgery map restricted to the 1-loop part2022

    • Author(s)
      Yuta Nozaki, Masatoshi Sato, Masaaki Suzuki
    • Journal Title

      Journal of Topology

      Volume: 15 Issue: 2 Pages: 587-619

    • DOI

      10.1112/topo.12233

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Unlabeled multi-robot motion planning with tighter separation bounds2022

    • Author(s)
      Bahareh Banyassady, Mark de Berg, Karl Bringmann, Kevin Buchin, Henning Fernau, Dan Halperin, Irina Kostitsyna, Yoshio Okamoto, Stijn Slot
    • Journal Title

      Proc. of 38th International Symposium on Computational Geometry (SoCG 2022), Leibniz International Proceedings in Informatics

      Volume: 224

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  • [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. of 39th International Symposium on Theoretical Aspects of Computer Science (STACS 2022), Leibniz International Proceedings in Informatics

      Volume: 219

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  • [Journal Article] Independent set reconfiguration on directed graphs2022

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

      arXiv

      Volume: --

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  • [Journal Article] Approximability of Monotone Submodular Function Maximization under Cardinality and Matroid Constraints in the Streaming Model2022

    • Author(s)
      Chien-Chung Huang, Naonori Kakimura, Simon Mauras, Yuichi Yoshida
    • Journal Title

      SIAM Journal on Discrete Mathematics

      Volume: 36 Issue: 1 Pages: 355-382

    • DOI

      10.1137/20m1357317

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  • [Journal Article] Covering projective planar graphs with three forests2022

    • Author(s)
      Mukae Raiji、Ozeki Kenta、Sano Terukazu、Tazume Ryuji
    • Journal Title

      Discrete Mathematics

      Volume: 345 Issue: 4 Pages: 112748-112748

    • DOI

      10.1016/j.disc.2021.112748

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  • [Journal Article] The Alon-Tarsi number of K5-minor-free graphs2022

    • Author(s)
      Abe Toshiki、Kim Seog-Jin、Ozeki Kenta
    • Journal Title

      Discrete Mathematics

      Volume: 345 Issue: 4 Pages: 112764-112764

    • DOI

      10.1016/j.disc.2021.112764

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      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Quantaloidal approach to constraint satisfaction2022

    • Author(s)
      Soichiro Fujii, Yuni Iwamasa, Kei Kimura
    • Journal Title

      Proc. of 4th International Conference on Applied Category Theory (ACT 2021), Electronic Proceedings in Theoretical Computer Science

      Volume: 372 Pages: 289-305

    • DOI

      10.4204/eptcs.372.21

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      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Reconstructing phylogenetic trees from multipartite quartet systems2022

    • Author(s)
      Hirai Hiroshi and Iwamasa Yuni
    • Journal Title

      Algorithmica

      Volume: - Issue: 7 Pages: 1875-1896

    • DOI

      10.1007/s00453-022-00945-9

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Shortest reconfiguration of perfect matchings via alternating cycles2022

    • Author(s)
      Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yoshio Okamoto
    • Journal Title

      SIAM Journal on Discrete Mathematics

      Volume: 36 Issue: 2 Pages: 1102-1123

    • DOI

      10.1137/20m1364370

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] A framework to design approximation algorithms for finding diverse solutions in combinatorial problems2022

    • Author(s)
      Tesshu Hanaka, Masashi Kiyomi, Yasuaki Kobayashi, Yusuke Kobayashi, Kazuhiro Kurita, Yota Otachi
    • Journal Title

      Proc. of 37th AAAI Conference on Artificial Intelligence (AAAI 2023)

      Volume: --

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optimal matroid bases with intersection constraints: Valuated matroids, M-convex functions, and their applications2021

    • Author(s)
      Yuni Iwamasa, Kenjiro Takazawa
    • Journal Title

      Mathematical Programming

      Volume: - Issue: 1-2 Pages: 229-256

    • DOI

      10.1007/s10107-021-01625-2

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Finding a maximum minimal separator: Graph classes and fixed-parameter tractability2021

    • Author(s)
      Tesshu Hanaka, Yasuaki Kobayashi, Yusuke Kobayashi, Tsuyoshi Yagita
    • Journal Title

      Theoretical Computer Science

      Volume: 865 Pages: 131-140

    • DOI

      10.1016/j.tcs.2021.03.006

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] A combinatorial algorithm for computing the entire sequence of the maximum degree of minors of a generic partitioned polynomial matrix with 2x2 submatrices2021

    • Author(s)
      Yuni Iwamasa
    • Journal Title

      arXiv

      Volume: --

    • Related Report
      2021 Annual Research Report
    • Open Access
  • [Journal Article] A combinatorial algorithm for computing the degree of the determinant of a generic partitioned polynomial matrix with 2x2 submatrices2021

    • Author(s)
      Yuni Iwamasa
    • Journal Title

      Proc. of 22nd Conference on Integer Programming and Combinatorial Optimization (IPCO 2021), Lecture Notes in Computer Science

      Volume: 12707 Pages: 119-133

    • DOI

      10.1007/978-3-030-73879-2_9

    • ISBN
      9783030738785, 9783030738792
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Algorithms for gerrymandering over graphs2021

    • Author(s)
      Ito Takehiro、Kamiyama Naoyuki、Kobayashi Yusuke、Okamoto Yoshio
    • Journal Title

      Theoretical Computer Science

      Volume: 868 Pages: 30-45

    • DOI

      10.1016/j.tcs.2021.03.037

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      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] A combinatorial algorithm for computing the rank of a generic partitioned matrix with $$2 \times 2$$ submatrices2021

    • Author(s)
      Hirai Hiroshi and Iwamasa Yuni
    • Journal Title

      Mathematical Programming

      Volume: - Issue: 1-2 Pages: 1-37

    • DOI

      10.1007/s10107-021-01676-5

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      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] ClusterSets: Optimizing Planar Clusters in Categorical Point Data2021

    • Author(s)
      Jakob Geiger, Sabine Cornelsen, Jan-Henrik Haunert, Philipp Kindermann, Tamara Mchedlidze, Martin Noellenburg, Yoshio Okamoto, Alexander Wolff
    • Journal Title

      Computer Graphics Forum

      Volume: 40 Issue: 3 Pages: 471-481

    • DOI

      10.1111/cgf.14322

    • Related Report
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  • [Journal Article] 2-Factors of cubic bipartite graphs2021

    • Author(s)
      Haghparast Nastaran、Ozeki Kenta
    • Journal Title

      Discrete Mathematics

      Volume: 344 Issue: 7 Pages: 112357-112357

    • DOI

      10.1016/j.disc.2021.112357

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      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] The Color Number of Cubic Graphs Having a Spanning Tree with a Bounded Number of Leaves2021

    • Author(s)
      Malnegro Analen A、Malacas Gina、Ozeki Kenta
    • Journal Title

      Theory and Applications of Graphs

      Volume: 8 Issue: 2

    • DOI

      10.20429/tag.2021.080201

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] On 3-polytopes with non-Hamiltonian prisms2021

    • Author(s)
      Daiki Ikegami, Shun-ichi Maezawa, Carol T. Zamfirescu
    • Journal Title

      Journal of Graph Theory

      Volume: 97 Issue: 4 Pages: 569-577

    • DOI

      10.1002/jgt.22672

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] On the complexity of fair house allocation2021

    • Author(s)
      Naoyuki Kamiyama, Pasin Manurangsi, Warut Suksompong
    • Journal Title

      Operations Research Letters

      Volume: 49 Issue: 4 Pages: 572-577

    • DOI

      10.1016/j.orl.2021.06.006

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Dynamic bipartite matching market with arrivals and departures2021

    • Author(s)
      Naonori Kakimura, Donghao Zhu
    • Journal Title

      Proc. of 17th Conference on Web and Internet Economics (WINE 2021), Lecture Notes in Computer Science

      Volume: 13112 Pages: 544-544

    • Related Report
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  • [Journal Article] Proper Colorings of Plane Quadrangulations Without Rainbow Faces2021

    • Author(s)
      Enami Kengo、Ozeki Kenta、Yamaguchi Tomoki
    • Journal Title

      Graphs and Combinatorics

      Volume: 37 Issue: 5 Pages: 1873-1890

    • DOI

      10.1007/s00373-021-02350-5

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [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 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Monotone edge flips to an orientation of maximum edge-connectivity a la Nash-Williams2021

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Journal Title

      arXiv

      Volume: --

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Open Access
  • [Journal Article] Distributed Reconfiguration of Spanning Trees2021

    • Author(s)
      Yamauchi Yukiko、Kamiyama Naoyuki、Otachi Yota
    • Journal Title

      Lecture Notes in Computer Science

      Volume: 13046 Pages: 516-520

    • DOI

      10.1007/978-3-030-91081-5_40

    • ISBN
      9783030910808, 9783030910815
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Online task assignment problems with reusable resources2021

    • Author(s)
      Hanna Sumita, Shinji Ito, Kei Takemura, Daisuke Hatano, Takuro Fukunaga, Naonori Kakimura, Ken-ichi Kawarabayashi
    • Journal Title

      Proc. of 36th AAAI Conference on Artificial Intelligence (AAAI 2022)

      Volume: 36 Issue: 5 Pages: 5199-5207

    • DOI

      10.1609/aaai.v36i5.20455

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Multi-Pass Streaming Algorithms for Monotone Submodular Function Maximization2021

    • Author(s)
      Chien-Chung Huang, Naonori Kakimura
    • Journal Title

      Theory of Computing Systems

      Volume: 66 Issue: 1 Pages: 354-394

    • DOI

      10.1007/s00224-021-10065-6

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] A forbidden pair for connected graphs to have spanning k‐trees2021

    • Author(s)
      Maezawa Shun‐ichi、Ozeki Kenta
    • Journal Title

      Journal of Graph Theory

      Volume: 99 Issue: 3 Pages: 509-519

    • DOI

      10.1002/jgt.22752

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Parameterized Complexity of $$(A,\ell )$$-Path Packing2021

    • Author(s)
      Belmonte Remy、Hanaka Tesshu、Kanzaki Masaaki、Kiyomi Masashi、Kobayashi Yasuaki、Kobayashi Yusuke、Lampis Michael、Ono Hirotaka、Otachi Yota
    • Journal Title

      Algorithmica

      Volume: 84 Issue: 4 Pages: 871-895

    • DOI

      10.1007/s00453-021-00875-y

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Submodular Reassignment Problem for Reallocating Agents to Tasks with Synergy Effects2021

    • Author(s)
      Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, and Yoshio Okamoto
    • Journal Title

      Discrete Optimization

      Volume: to appear Pages: 100631-100631

    • DOI

      10.1016/j.disopt.2021.100631

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
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  • [Journal Article] Computing the Largest Bond and the Maximum Connected Cut of a Graph2021

    • Author(s)
      Gabriel L. Duarte, Hiroshi Eto, Tesshu Hanaka, Yasuaki Kobayashi, Yusuke Kobayashi, Daniel Lokshtanov, Lehilton L. C. Pedrosa, Rafael C. S. Schouery, Ueverton S. Souza
    • Journal Title

      Algorithmica

      Volume: 83 Issue: 5 Pages: 1421-1458

    • DOI

      10.1007/s00453-020-00789-1

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Market Pricing for Matroid Rank Valuations2021

    • Author(s)
      Kristof Berczi, Naonori Kakimura, Yusuke Kobayashi
    • Journal Title

      SIAM Journal on Discrete Mathematics

      Volume: 35 Issue: 4 Pages: 2662-2678

    • DOI

      10.1137/20m1386335

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A combinatorial algorithm for computing the entire sequence of the maximum degree of minors of a generic partitioned polynomial matrix with 2 x 2 submatrices2021

    • Author(s)
      Yuni Iwamasa
    • Journal Title

      arXiv

      Volume: --

    • Related Report
      2020 Annual Research Report
    • Open Access
  • [Journal Article] Fixed-parameter algorithms for graph constraint logic2020

    • Author(s)
      Tatsuhiko Hatanaka, Felix Hommelsheim, Takehiro Ito, Yusuke Kobayashi, Moritz Muhlenthaler, Akira Suzuki
    • Journal Title

      arXiv

      Volume: --

    • Related Report
      2020 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] An improved deterministic parameterized algorithm for cactus vertex deletion2020

    • Author(s)
      Yuuki Aoike, Tatsuya Gima, Tesshu Hanaka, Masashi Kiyomi, Yasuaki Kobayashi, Yusuke Kobayashi, Kazuhiro Kurita, Yota Otachi
    • Journal Title

      arXiv

      Volume: --

    • Related Report
      2020 Annual Research Report
    • Open Access
  • [Presentation] アルゴリズム的問題発見とアルゴリズム的問題解決2024

    • Author(s)
      岡本 吉央
    • Organizer
      第196回アルゴリズム研究発表会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] グラフ最小カットに基づく多様度最大の安定マッチング集合を求めるアルゴリズム2024

    • Author(s)
      岩政 勇仁, 森平 隼矢
    • Organizer
      日本応用数理学会第20回研究部会連合発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] マトロイドを表すBDD/ZDDについて2024

    • Author(s)
      江本 洸海, 岩政 勇仁, 湊 真一
    • Organizer
      電子情報通信学会2023年 総合大会 COMP-AFSA学生シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 組合せ最適化におけるアルゴリズムの理論的な効率性2024

    • Author(s)
      小林佑輔
    • Organizer
      日本オペレーションズリサーチ学会春季研究発表会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] タイを含む無羨望マッチングの遷移2024

    • Author(s)
      岩政 勇仁, 川原 純, 上田 結大
    • Organizer
      電子情報通信学会 コンピュテーション研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Kempe equivalence classes on 3-edge-colorings in cubic graphs2023

    • Author(s)
      Kenta Ozeki
    • Organizer
      Joint Mathematics Meetings
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 非負k-劣モジュラ緩和について2023

    • Author(s)
      内田 康太郎, 岩政 勇仁
    • Organizer
      2022年度 冬のLAシンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 組合せ遷移におけるトポロジーの視点2023

    • Author(s)
      野崎雄太
    • Organizer
      電子情報通信学会コンピュテーション研究会
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
    • Invited
  • [Presentation] 整数双劣モジュラ多面体の整数点集合の特徴づけ2023

    • Author(s)
      岩政 勇仁
    • Organizer
      日本応用数理学会 第19回研究部会連合発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Matchings in bipartite graphs with stochastic arrivals and departures2023

    • Author(s)
      Naonori Kakimura, Donghao Zhu
    • Organizer
      12th Japanese-Hungarian Symposium on Discrete Mathematics and Its Applications (JH 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A combinatorial algorithm for computing the entire sequence of the maximum degree of minors of a generic partitioned polynomial matrix with 2x2 submatrices2023

    • Author(s)
      Yuni Iwamasa
    • Organizer
      12th Japanese-Hungarian Symposium on Discrete Mathematics and Its Applications (JH 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A combinatorial algorithm for computing the entire sequence of the maximum degree of minors of a generic partitioned polynomial matrix with 2x2 submatrices2023

    • Author(s)
      Yuni Iwamasa
    • Organizer
      SIAM Conference on Optimization (OP23)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reconfiguration of colorings in triangulations of the sphere2023

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Organizer
      39th International Symposium on Computational Geometry (SoCG 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 時間制約付き有向木の遷移2023

    • Author(s)
      伊藤 健洋, 岩政 勇仁, 神山 直之, 小林 靖明, 小林 佑輔, 前澤 俊一, 鈴木 顕
    • Organizer
      2023年度夏のLAシンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 彩色遷移可能性が多項式時間で判定できるマルチツリー遷移制約について2023

    • Author(s)
      岩政 勇仁, 浦川 樹
    • Organizer
      2023年度 夏のLAシンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] Rerouting planar curves and disjoint paths2023

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Organizer
      50th EATCS International Colloquium on Automata, Languages and Programming (ICALP 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Three open problems on combinatorial reconfiguration2023

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Organizer
      3rd Workshop on Combinatorial Reconfiguration, affiliated with ICALP 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Algorithmic theory of qubit routing2023

    • Author(s)
      Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yoshio Okamoto
    • Organizer
      3rd Workshop on Combinatorial Reconfiguration, affiliated with ICALP 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hardness of finding combinatorial shortest paths on graph associahedra2023

    • Author(s)
      Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto
    • Organizer
      50th EATCS International Colloquium on Automata, Languages and Programming (ICALP 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reconfiguration of time-respecting arborescences2023

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naoyuki Kamiyama, Yasuaki Kobayashi, Yusuke Kobayashi, Shun-ichi Maezawa, Akira Suzuki
    • Organizer
      18th Algorithms and Data Structures Symposium (WADS 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spanning trees with bounded number of leaves in K_{1,p}-free graphs2023

    • Author(s)
      Kenta Ozeki
    • Organizer
      10th International Congress on Industrial and Applied Mathematics (ICIAM 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Minimum separator reconfiguration2023

    • Author(s)
      Guilherme C. M. Gomes, Clement Legrand-Duchesne, Reem Mahmoud, Amer E. Mouawad, Yoshio Okamoto, Vinicius F. dos Santos, Tom C. van der Zanden
    • Organizer
      The 18th International Symposium on Parameterized and Exact Computation (IPEC 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spanning trees in star-free graphs2023

    • Author(s)
      Kenta Ozeki
    • Organizer
      25th Indonesia-Japan Conference on Discrete and Computational Geometry, Graphs, and Games (IJCDCG^3 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ILS解グラフの連結性の行列のサイズによる分類2023

    • Author(s)
      重信 賢直, 神山 直之
    • Organizer
      日本オペレーションズ・リサーチ学会九州支部 九州地区におけるOR若手研究交流会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Spanning trees in connected K1,p-free graphs2023

    • Author(s)
      Kenta Ozeki
    • Organizer
      35th Workshop on Topological Graph Theory (TGT35)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 制限付きt-マッチング問題に対する制約充足的アプローチ2023

    • Author(s)
      岩政 勇仁, 小林 佑輔, 高澤 兼二郎
    • Organizer
      第195回アルゴリズム研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 極大外平面グラフの奇彩色2023

    • Author(s)
      大迫 翔, 小関健太
    • Organizer
      2023年度応用数学合同研究集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Kempe equivalence of cubic plane graphs2022

    • Author(s)
      小関 健太
    • Organizer
      Japanese Conference on Combinatorics and its Applications 2022 離散数学とその応用研究集会2022
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] Angular Resolution in Graph Drawing2022

    • Author(s)
      Yoshio Okamoto
    • Organizer
      GD 2022 PhD School
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 球面の三角形分割の彩色遷移2022

    • Author(s)
      伊藤 健洋,岩政 勇仁,小林 佑輔,前澤 俊一,野崎 雄太,岡本 吉央,小関 健太
    • Organizer
      日本オペレーションズ・リサーチ学会 2022年秋季研究発表会
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] ストリーミングデータにおけるアイテム頻出数を求める省領域乱択アルゴリズム2022

    • Author(s)
      垣村尚徳,新田陸
    • Organizer
      電子情報通信学会コンピュテーション研究会
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] ILS における解グラフの連結性に関する研究2022

    • Author(s)
      重信 賢直, 神山 直之
    • Organizer
      日本オペレーションズ・リサーチ学会九州支部 九州地区におけるOR若手研究交流会
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] On reachable assignments under dichotomous preferences2022

    • Author(s)
      Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yuta Nozaki, Yoshio Okamoto, and Kenta Ozeki
    • Organizer
      24th International Conference on Principles and Practice of Multi-Agent Systems (PRIMA 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reconfiguration and Enumeration of Optimal Cyclic Ladder Lotteries2022

    • Author(s)
      Yuta Nozaki, Kunihiro Wasa, Katsuhisa Yamanaka
    • Organizer
      電子情報通信学会コンピュテーション研究会
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
  • [Presentation] 球面の三角形分割の彩色遷移2022

    • Author(s)
      伊藤 健洋,岩政 勇仁,小林 佑輔,前澤 俊一,野崎 雄太,岡本 吉央,小関 健太
    • Organizer
      2022年度応用数学合同研究集会
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] Algorithms for coloring reconfiguration under recolorability digraphs2022

    • Author(s)
      Soichiro Fujii, Yuni Iwamasa, Kei Kimura, and Akira Suzuki
    • Organizer
      The 33rd International Symposium on Algorithms and Computation (ISAAC 2022)
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Monotone edge flips to an orientation of maximum edge-connectivity a la Nash-Williams2022

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Organizer
      2022 ACM-SIAM Symposium on Discrete Algorithms (SODA 2022)
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] On finding Nash equilibria of discrete preference games and network coordination games2022

    • Author(s)
      石塚 天, 神山 直之
    • Organizer
      2021年度冬のLAシンポジウム, 京都大学数理解析研究所RIMS共同研究(公開型), 情報社会を支える計算機科学の基礎理論
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] Monotone edge flips to an orientation of maximum edge-connectivity a la Nash-Williams2022

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Organizer
      電子情報通信学会コンピュテーション研究会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Invited
  • [Presentation] 「52人でババ抜きしてみた」の一般化と特殊化2022

    • Author(s)
      岡本 吉央
    • Organizer
      第16回組合せゲーム・パズル研究集会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] 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
    • Organizer
      39th International Symposium on Theoretical Aspects of Computer Science (STACS 2022)
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] On reachable assignments under dichotomous preferences2022

    • Author(s)
      Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yuta Nozaki, Yoshio Okamoto, and Kenta Ozeki
    • Organizer
      24th International Conference on Principles and Practice of Multi-Agent Systems (PRIMA)
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reconfiguration and enumeration of optimal cyclic ladder lotteries2022

    • Author(s)
      Yuta Nozaki, Kunihiro Wasa, Katsuhisa Yamanaka
    • Organizer
      電子情報通信学会コンピュテーション研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Reformist envy-free item allocations: algorithms and complexity2021

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Organizer
      第183回情報処理学会アルゴリズム研究会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] A combinatorial algorithm for computing the degree of the determinant of a generic partitioned polynomial matrix with 2x2 submatrices2021

    • Author(s)
      Yuni Iwamasa
    • Organizer
      22nd Conference on Integer Programming and Combinatorial Optimization (IPCO 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ClusterSets: optimizing planar clusters in categorical point data2021

    • Author(s)
      Jakob Geiger, Sabine Cornelsen, Jan-Henrik Haunert, Philipp Kindermann, Tamara Mchedlidze, Martin Nollenburg, Yoshio Okamoto, Alexander Wolff
    • Organizer
      23rd EG Conference on Visualization (EuroVis 2021)
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reconfiguration of envy-free item allocations2021

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
    • Organizer
      Workshop on Combinatorial Reconfiguration, affiliated with ICALP 2021
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Quantaloidal approach to constraint satisfaction2021

    • Author(s)
      Soichiro Fujii, Yuni Iwamasa, Kei Kimura
    • Organizer
      4th International Conference on Applied Category Theory (ACT 2021)
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reconfiguring directed trees in a digraph2021

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Yasuaki Kobayashi, Yu Nakahata, Yota Otachi, Kunihiro Wasa
    • Organizer
      Workshop on Combinatorial Reconfiguration, affiliated with ICALP 2021
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 単位円配置の遷移 --- 連続的な組合せ遷移2021

    • Author(s)
      岡本 吉央
    • Organizer
      離散数学とその応用研究集会2021
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] 3-正則2 部グラフにおける各閉路が長い2-factor2021

    • Author(s)
      小関 健太
    • Organizer
      離散数学とその応用研究集会2021
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] 辺着色グラフの虹色全域木への辺分割とRota のbasis 予想2021

    • Author(s)
      前澤 俊一
    • Organizer
      離散数学とその応用研究集会2021
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] 2x2型分割多項式行列の行列式次数を求める組合せ的多項式時間アルゴリズム2021

    • Author(s)
      岩政 勇仁
    • Organizer
      日本応用数理学会 2021年度年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Reconfiguring directed trees in a digraph2021

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Yasuaki Kobayashi, Yu Nakahata, Yota Otachi, Kunihiro Wasa
    • Organizer
      27th International Computing and Combinatorics Conference (COCOON 2021)
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 2部マッチング問題の代数的拡張2021

    • Author(s)
      岩政 勇仁
    • Organizer
      日本オペレーションズ・リサーチ学会「最適化手法とアルゴリズム」研究部会 第3回 研究会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Invited
  • [Presentation] Token sliding on directed graphs2021

    • Author(s)
      Takehiro Ito, Yuni Iwamasa, Yasuaki Kobayashi, Yu Nakahata, Masahiro Takahashi, Yota Otachi, Kunihiro Wasa
    • Organizer
      電子情報通信学会コンピュテーション研究会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] 理論の理論への応用は理論か応用か?2021

    • Author(s)
      岡本 吉央
    • Organizer
      日本オペレーションズ・リサーチ学会2021年春季研究発表会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] マトロイドランク効用関数をもつ組合せ市場の価格付け2021

    • Author(s)
      Berczi Kristof, 垣村 尚徳, 小林 佑輔
    • Organizer
      日本応用数理学会 2021年 研究部会連合発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] A combinatorial algorithm for computing the degree of the determinant of a generic partitioned polynomial matrix with 2 x 2 submatrices2021

    • Author(s)
      Yuni Iwamasa
    • Organizer
      22nd Conference on Integer Programming and Combinatorial Optimization (IPCO 2021)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 2 x 2型分割多項式行列の行列式次数を求める組合せ的多項式時間アルゴリズム2021

    • Author(s)
      岩政 勇仁
    • Organizer
      日本応用数理学会 2021年度年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 2部マッチング理論の代数的一般化について2020

    • Author(s)
      岩政 勇仁
    • Organizer
      第32回RAMP数理最適化シンポジウム (RAMP 2020)
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Fixed-parameter algorithms for graph constraint logic2020

    • Author(s)
      Tatsuhiko Hatanaka, Felix Hommelsheim, Takehiro Ito, Yusuke Kobayashi, Moritz Muhlenthaler, Akira Suzuki
    • Organizer
      15th International Symposium on Parameterized and Exact Computation (IPEC 2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Book] ガイダンス 離散数学 基礎から発展的な考え方へ2023

    • Author(s)
      中本 敦浩, 小関 健太
    • Total Pages
      224
    • Publisher
      サイエンス社
    • ISBN
      9784781915692
    • Related Report
      2022 Annual Research Report
  • [Book] 曲面上のグラフ理論2021

    • Author(s)
      中本 敦浩, 小関 健太
    • Total Pages
      216
    • Publisher
      サイエンス社
    • ISBN
      9784781915302
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Remarks] 組合せ遷移@学術変革領域研究(B) HOME

    • URL

      https://core.dais.is.tohoku.ac.jp/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Funded Workshop] 35th Workshop on Topological Graph Theory (TGT35)2023

    • Related Report
      2022 Annual Research Report
  • [Funded Workshop] Workshop "Polytope Diameter and Related Topics"2022

    • Related Report
      2022 Annual Research Report
  • [Funded Workshop] Workshop "Combinatorial Reconfiguration and Fixed-Parameter Tractability"2022

    • Related Report
      2022 Annual Research Report
  • [Funded Workshop] Workshop "Polytope Diameter and Related Topics"2022

    • Related Report
      2021 Annual Research Report
  • [Funded Workshop] Workshop "Combinatorial Reconfiguration and Fixed-Parameter Tractability"2022

    • Related Report
      2021 Annual Research Report
  • [Funded Workshop] Workshop "Combinatorial Reconfiguration in Discrete and Computational Geometry"2021

    • Related Report
      2021 Annual Research Report
  • [Funded Workshop] Workshop "Graph Theory for Combinatorial Reconfiguration"2021

    • Related Report
      2021 Annual Research Report

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Published: 2020-10-30   Modified: 2025-01-30  

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