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

2022 Fiscal Year Annual Research Report

• Project Area: Fusion of Computer Science, Engineering and Mathematics Approaches for Expanding Combinatorial Reconfiguration
• Project/Area Number: 20H05795
• Research Institution: The University of Electro-Communications
• Principal Investigator: 岡本 吉央 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
• 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 Annual Research Achievements

「組合せ遷移に対する数学理論」の構築を大目標として，主に次の研究を行った．
(1) 部分テーマ「組合せ遷移における数学活用事例の体系的収集」において，アルゴリズムゲーム理論における組合せ遷移問題に対して数学活用を行い，その結果を体系的に収集した．特に，社会ネットワーク上で各エージェントが二値選好を持つ場合において，アイテム割当が遷移する問題に対して，計算複雑性の解析，多項式時間アルゴリズムの設計を行った．この成果をマルチエージェントシステムの査読付き国際会議であるPRIMA 2022で発表した．
(2) 部分テーマ「組合せ遷移に資する数理手法の開発」において，凸多面体の組合せ論に関わる問題を組合せ遷移の視点から調査し，その計算複雑性を解明した．これはデータ構造や計算幾何で知られる未解決問題に関係しており，その問題に対するある種の一般化アプローチが難しい傍証を与えた．この成果を計算理論のトップ会議であるICALP 2023で発表した．
(3) 部分テーマ「組合せ遷移に資する数理手法の開発」において，グラフ彩色に関わる組合せ遷移問題をトポロジーの視点から解決した．この成果を計算幾何学のトップ会議であるSoCG 2023で発表した．
また，組合せ遷移に関する国際ワークショップ「Polytope Diameter and Related Topics」「Combinatorial Reconfiguration and Fixed-Parameter Tractability」を主催し，組合せ遷移研究の国際展開と普及に努めた．なお，研究期間延長 (繰越) のため，ここでは2022年と2023年に得られた実績を説明している．

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

Research Products

• [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)
  • Country Name: U.S.A.
  • Counterpart Institution: 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
  • # of Other Institutions: 1
• [Int'l Joint Research] 復旦大学/青海師範大学/中国計量大学(中国)
  • Country Name: CHINA
  • Counterpart Institution: 復旦大学/青海師範大学/中国計量大学
• [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)
  • Country Name: FRANCE
  • Counterpart Institution: リヨン大学/ボルドー大学/グルノーブル・アルプ大学
• [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)
  • Country Name: HUNGARY
  • Counterpart Institution: レニィ数学研究所/エトヴェシュ・ロラーンド大学
• [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)
  • Country Name: GERMANY
  • Counterpart Institution: 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
• [Int'l Joint Research]
  • # of Other Countries: 12
• [Journal Article] A graph minor condition for graphs to be k-linked (2024)
  • Author(s): Shun-ichi Maezawa
  • Journal Title: European Journal of Combinatorics Volume: 116 Pages: 103874
  • DOI: 10.1016/j.ejc.2023.103874
  • 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 submatrices (2024)
  • Author(s): Yuni Iwamasa
  • Journal Title: Mathematical Programming, Series A Volume: 204 Pages: 27-79
  • DOI: 10.1007/s10107-023-01949-1
  • Peer Reviewed
• [Journal Article] Reachability of fair allocations via sequential exchanges (2024)
  • Author(s): Ayumi Igarashi, Naoyuki Kamiyama, Warut Suksompong, Yuen Sheung Man
  • Journal Title: Proc. of 38th AAAI Conference on Artificial Intelligence (AAAI 2024) Volume: -- Pages: 9773-9780
  • DOI: 10.1609/aaai.v38i9.28836
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The strongly stable matching problem with closures (2024)
  • Author(s): Naoyuki Kamiyama
  • Journal Title: arXiv Volume: -- Pages: 2401.02666
  • DOI: 10.48550/arXiv.2401.02666
  • Open Access
• [Journal Article] Modifying an instance of the super-stable matching problem (2024)
  • Author(s): Naoyuki Kamiyama
  • Journal Title: arXiv Volume: -- Pages: 2402.11918
  • DOI: 10.48550/arXiv.2402.11918
  • Open Access
• [Journal Article] Characterizations of the set of integer points in an integral bisubmodular polyhedron (2024)
  • Author(s): Yuni Iwamasa
  • Journal Title: Discrete Mathematics Volume: 347 Pages: 113855
  • DOI: 10.1016/j.disc.2023.113855
  • 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: -- Pages: 掲載予定
  • Peer Reviewed
• [Journal Article] H-colorings for 4-regular graphs (2024)
  • Author(s): Analen A. Malnegro, Kenta Ozeki
  • Journal Title: Discrete Mathematics Volume: 347 Pages: 113844
  • DOI: 10.1016/j.disc.2023.113844
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A note on 3-distance coloring of planar graphs (2024)
  • Author(s): Morteza Hasanvand, Kenta Ozeki
  • Journal Title: Bulletin of the Iranian Mathematical Society Volume: 50 Pages: 25
  • DOI: 10.1007/s41980-023-00848-7
  • Peer Reviewed
• [Journal Article] randomized counter-based algorithms for frequency estimation over data streams in O(log log N) space (2024)
  • Author(s): Naonori Kakimura, Riku Nitta
  • Journal Title: Theoretical Computer Science Volume: 984 Pages: 114317
  • DOI: 10.1016/j.tcs.2023.114317
  • Peer Reviewed
• [Journal Article] Pareto efficient matchings with pairwise preferences (2023)
  • Author(s): Naoyuki Kamiyama
  • Journal Title: Theoretical Computer Science Volume: 948 Pages: 113707
  • DOI: 10.1016/j.tcs.2023.113707
  • Peer Reviewed
• [Journal Article] Reconfiguring (non-spanning) arborescences (2023)
  • 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
  • Peer Reviewed
• [Journal Article] A framework to design approximation algorithms for finding diverse solutions in combinatorial problems (2023)
  • 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 Pages: 3968-3976
  • DOI: 10.1609/aaai.v37i4.25511
  • Peer Reviewed
• [Journal Article] Arithmetic progressions, quasi progressions, and Gallai-Ramsey colorings (2023)
  • Author(s): Yaping Mao, Kenta Ozeki, Aaron Robertson, Zhao Wang
  • Journal Title: Journal of Combinatorial Theory, Series A Volume: 193 Pages: 105672
  • DOI: 10.1016/j.jcta.2022.105672
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A 2-bisection with small number of monochromatic edges of a claw-free cubic graph (2023)
  • Author(s): Seungjae Eom, Kenta Ozeki
  • Journal Title: Graphs and Combinatorics Volume: 39 Pages: 1-18
  • DOI: 10.1007/s00373-023-02611-5
  • Peer Reviewed
• [Journal Article] Monotone edge flips to an orientation of maximum edge-connectivity a la Nash-Williams (2023)
  • 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 Pages: 6
  • DOI: 10.1145/3561302
  • Peer Reviewed
• [Journal Article] Graphs with large total angular resolution (2023)
  • 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
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Reconfiguration of time-respecting arborescences (2023)
  • Author(s): Takehiro Ito, Yuni Iwamasa, Naoyuki Kamiyama, Yasuaki Kobayashi, Yusuke Kobayashi, Shun-ichi Maezawa, Akira Suzuki
  • Journal Title: Proc. of 18th Algorithms and Data Structures Symposium (WADS 2023), Lecture Notes in Computer Science Volume: 14079 Pages: 521-532
  • DOI: 10.1007/978-3-031-38906-1_34
  • Peer Reviewed
• [Journal Article] Rerouting planar curves and disjoint paths (2023)
  • 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 Pages: 81:1-81:19
  • DOI: 10.4230/LIPIcs.ICALP.2023.81
  • Peer Reviewed / Open Access
• [Journal Article] Reconfiguration and enumeration of optimal cyclic ladder lotteries (2023)
  • Author(s): Yuta Nozaki, Katsuhisa Yamanaka, Kunihiro Wasa
  • Journal Title: Proc. of 34th International Workshop on Combinatorial Algorithms (IWOCA 2023), Lecture Notes in Computer Science Volume: 13889 Pages: 331-342
  • DOI: 10.1007/978-3-031-34347-6_28
  • Peer Reviewed
• [Journal Article] Fixed-parameter algorithms for graph constraint logic (2023)
  • Author(s): Tatsuhiko Hatanaka, Felix Hommelsheim, Takehiro Ito, Yusuke Kobayashi, Moritz Muhlenthaler, Akira Suzuki
  • Journal Title: Theoretical Computer Science Volume: 959 Pages: 113863
  • DOI: 10.1016/j.tcs.2023.113863
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Reconfiguration of spanning trees with degree constraints or diameter constraints (2023)
  • Author(s): Nicolas Bousquet, Takehiro Ito, Yusuke Kobayashi, Haruka Mizuta, Paul Ouvrard, Akira Suzuki, Kunihiro Wasa
  • Journal Title: Algorithmica Volume: 85 Pages: 2779-2816
  • DOI: 10.1007/s00453-023-01117-z
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Feedback vertex set reconfiguration in planar graphs (2023)
  • Author(s): Nicolas Bousquet, Felix Hommelsheim, Yusuke Kobayashi, Moritz Muhlenthaler, Akira Suzuki
  • Journal Title: Theoretical Computer Science Volume: 979 Pages: 114188
  • DOI: 10.1016/j.tcs.2023.114188
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] On reachable assignments under dichotomous preferences (2023)
  • Author(s): Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
  • Journal Title: Theoretical Computer Science Volume: 979 Pages: 114196
  • DOI: 10.1016/j.tcs.2023.114196
  • Peer Reviewed
• [Journal Article] Algorithmic theory of qubit routing (2023)
  • 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
  • Peer Reviewed
• [Journal Article] Reconfiguration of the union of arborescences (2023)
  • 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 Pages: 48:1-48:14
  • DOI: 10.4230/LIPIcs.ISAAC.2023.48
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Note on fair game edge-connectivity of graphs (2023)
  • Author(s): Michitaka Furuya, Naoki Matsumoto, Yumiko Ohno, Kenta Ozeki
  • Journal Title: Discrete Applied Mathematics Volume: 333 Pages: 132-135
  • DOI: 10.1016/j.dam.2023.03.024
  • Peer Reviewed
• [Journal Article] A spanning tree with at most k leaves in a K_{1,p}-free graph (2023)
  • Author(s): Kenta Ozeki, Masao Tsugaki
  • Journal Title: The Electronic Journal of Combinatorics Volume: 30 Pages: 4.29
  • DOI: 10.37236/11698
  • Peer Reviewed
• [Journal Article] Deterministic primal-dual algorithms for online k-way matching with delays (2023)
  • 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
  • Peer Reviewed
• [Journal Article] Reconfiguration of colorings in triangulations of the sphere (2023)
  • 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 Pages: 43:1-43:16
  • DOI: 10.4230/LIPIcs.SoCG.2023.43
  • Peer Reviewed / Open Access
• [Journal Article] Characterizations of the set of integer points in an integral bisubmodular polyhedron (2023)
  • Author(s): Yuni Iwamasa
  • Journal Title: arXiv Volume: -- Pages: 2303.06320
  • DOI: 10.48550/arXiv.2303.06320
  • Open Access
• [Journal Article] Algebraic combinatorial optimization on the degree of determinants of noncommutative symbolic matrices (2023)
  • Author(s): Hiroshi Hirai, Yuni Iwamasa, Taihei Oki, Tasuku Soma
  • Journal Title: arXiv Volume: -- Pages: 2310.15502
  • DOI: 10.48550/arXiv.2310.15502
  • Open Access
• [Journal Article] Finding a maximum restricted t-matching via Boolean edge-CSP (2023)
  • Author(s): Yuni Iwamasa, Yusuke Kobayashi, Kenjiro Takazawa
  • Journal Title: arXiv Volume: -- Pages: 2310.20245
  • DOI: 10.48550/arXiv.2310.20245
  • Open Access
• [Journal Article] Minimum separator reconfiguration (2023)
  • 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: -- Pages: 2307.07782
  • DOI: 10.48550/arXiv.2307.07782
  • Open Access / Int'l Joint Research
• [Journal Article] On connectedness of solutions to integer linear systems (2023)
  • 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
  • Peer Reviewed
• [Journal Article] Hardness of finding combinatorial shortest paths on graph associahedra (2023)
  • 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 Pages: 82:1-82:17
  • DOI: 10.4230/LIPIcs.ICALP.2023.82
  • Peer Reviewed / Open Access
• [Journal Article] Minimum separator reconfiguration (2023)
  • 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 Pages: 90:51:12
  • DOI: 10.4230/LIPIcs.IPEC.2023.9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Independent set reconfiguration on directed graphs (2022)
  • 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 Pages: 58:1-58:15
  • DOI: 10.4230/LIPIcs.MFCS.2022.58
  • Peer Reviewed / Open Access
• [Journal Article] An improved deterministic parameterized algorithm for cactus vertex deletion (2022)
  • Author(s): Yuuki Aoike, Tatsuya Gima, Tesshu Hanaka, Masashi Kiyomi, Yasuaki Kobayashi, Yusuke Kobayashi, Kazuhiro Kurita, Yota Otachi
  • Journal Title: Theory of Computing Systems Volume: 66 Pages: 502-515
  • DOI: 10.1007/s00224-022-10076-x
  • Peer Reviewed
• [Journal Article] A parameterized view to the robust recoverable base problem of matroids under structural uncertainty (2022)
  • Author(s): Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yoshio Okamoto
  • Journal Title: Operations Research Letters Volume: 50 Pages: 370-375
  • DOI: 10.1016/j.orl.2022.05.001
  • Peer Reviewed / Open Access
• [Journal Article] Weight balancing on boundaries (2022)
  • 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
  • DOI: 10.20382/jocg.v13i1a1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Reforming an envy-free matching (2022)
  • Author(s): Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
  • Journal Title: arXiv Volume: -- Pages: 2207.02641
  • DOI: 10.48550/arXiv.2207.02641
  • Open Access
• [Journal Article] An even 2-factor in the line graph of a cubic graph (2022)
  • Author(s): SeungJae Eom, Kenta Ozeki
  • Journal Title: Theory and Applications of Graphs Volume: 9 Pages: 7
  • DOI: 10.20429/tag.2022.090107
  • Peer Reviewed
• [Journal Article] Algorithms for coloring reconfiguration under recolorability digraphs (2022)
  • 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 Pages: 4:1-4:19
  • DOI: 10.4230/LIPIcs.ISAAC.2022.4
  • Peer Reviewed / Open Access
• [Journal Article] Rerouting planar curves and disjoint paths (2022)
  • Author(s): Takehiro Ito, Yuni Iwamasa, Naonori Kakimura, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
  • Journal Title: arXiv Volume: -- Pages: 2210.11778
  • DOI: 10.48550/arXiv.2210.11778
  • Open Access
• [Journal Article] Reconfiguration of colorings in triangulations of the sphere (2022)
  • Author(s): Takehiro Ito, Yuni Iwamasa, Yusuke Kobayashi, Shun-ichi Maezawa, Yuta Nozaki, Yoshio Okamoto, Kenta Ozeki
  • Journal Title: arXiv Volume: -- Pages: 2210.17105
  • DOI: 10.48550/arXiv.2210.17105
  • Open Access
• [Journal Article] Characterization of (m,n)-linked planar graphs (2022)
  • Author(s): Kengo Enami, Shun-ichi Maezawa
  • Journal Title: Graphs and Combinatorics Volume: 38 Pages: 131
  • DOI: 10.1007/s00373-022-02537-4
  • Peer Reviewed
• [Journal Article] Special case of Rota's basis conjecture on graphic matroids (2022)
  • Author(s): Shun-ichi Maezawa, Akiko Yazawa
  • Journal Title: The Electronic Journal of Combinatorics Volume: 29 Pages: P3.63
  • DOI: 10.37236/10835
  • Peer Reviewed
• [Journal Article] On reachable assignments under dichotomous preferences (2022)
  • 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
  • Peer Reviewed
• [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
  • 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
• [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
• [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
  • 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
• [Presentation] Kempe equivalence classes on 3-edge-colorings in cubic graphs (2023)
  • Author(s): Kenta Ozeki
  • Organizer: Joint Mathematics Meetings
  • 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
• [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
  • 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
• [Presentation] Matchings in bipartite graphs with stochastic arrivals and departures (2023)
  • Author(s): Naonori Kakimura, Donghao Zhu
  • Organizer: 12th Japanese-Hungarian Symposium on Discrete Mathematics and Its Applications (JH 2023)
  • 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 submatrices (2023)
  • Author(s): Yuni Iwamasa
  • Organizer: 12th Japanese-Hungarian Symposium on Discrete Mathematics and Its Applications (JH 2023)
  • 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 submatrices (2023)
  • Author(s): Yuni Iwamasa
  • Organizer: SIAM Conference on Optimization (OP23)
  • Int'l Joint Research
• [Presentation] Reconfiguration of colorings in triangulations of the sphere (2023)
  • 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)
  • 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
• [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
• [Presentation] Rerouting planar curves and disjoint paths (2023)
  • 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)
  • Int'l Joint Research
• [Presentation] Three open problems on combinatorial reconfiguration (2023)
  • 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
  • Int'l Joint Research
• [Presentation] Algorithmic theory of qubit routing (2023)
  • Author(s): Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yoshio Okamoto
  • Organizer: 3rd Workshop on Combinatorial Reconfiguration, affiliated with ICALP 2023
  • Int'l Joint Research
• [Presentation] Hardness of finding combinatorial shortest paths on graph associahedra (2023)
  • 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)
  • Int'l Joint Research
• [Presentation] Reconfiguration of time-respecting arborescences (2023)
  • 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)
  • Int'l Joint Research
• [Presentation] Spanning trees with bounded number of leaves in K_{1,p}-free graphs (2023)
  • Author(s): Kenta Ozeki
  • Organizer: 10th International Congress on Industrial and Applied Mathematics (ICIAM 2023)
  • Int'l Joint Research / Invited
• [Presentation] Minimum separator reconfiguration (2023)
  • 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)
  • Int'l Joint Research
• [Presentation] Spanning trees in star-free graphs (2023)
  • Author(s): Kenta Ozeki
  • Organizer: 25th Indonesia-Japan Conference on Discrete and Computational Geometry, Graphs, and Games (IJCDCG^3 2023)
  • 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
• [Presentation] Spanning trees in connected K1,p-free graphs (2023)
  • Author(s): Kenta Ozeki
  • Organizer: 35th Workshop on Topological Graph Theory (TGT35)
  • 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
• [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
• [Presentation] Kempe equivalence of cubic plane graphs (2022)
  • 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
• [Presentation] Angular Resolution in Graph Drawing (2022)
  • Author(s): Yoshio Okamoto
  • Organizer: GD 2022 PhD School
  • 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
• [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
• [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
• [Presentation] On reachable assignments under dichotomous preferences (2022)
  • 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)
  • Int'l Joint Research
• [Presentation] Reconfiguration and Enumeration of Optimal Cyclic Ladder Lotteries (2022)
  • 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
• [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
• [Presentation] Algorithms for coloring reconfiguration under recolorability digraphs (2022)
  • Author(s): Soichiro Fujii, Yuni Iwamasa, Kei Kimura, and Akira Suzuki
  • Organizer: The 33rd International Symposium on Algorithms and Computation (ISAAC 2022)
  • 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: 978-4-7819-1569-2
• [Remarks] 組合せ遷移＠学術変革領域研究(B) HOME
  • URL: https://core.dais.is.tohoku.ac.jp/
• [Funded Workshop] 35th Workshop on Topological Graph Theory (TGT35) (2023)
• [Funded Workshop] Workshop "Polytope Diameter and Related Topics" (2022)
• [Funded Workshop] Workshop "Combinatorial Reconfiguration and Fixed-Parameter Tractability" (2022)