澄田範奈 (Hanna SUMITA)

Journal Papers

• Ayumi Igarashi, Yasushi Kawase, Warut Suksompong, Hanna Sumita: Fair Division with Two-Sided Preferences.
  Games and Economic Behavior, 147, pp. 268-287, 2024. [Page]
• Hiromichi Goko, Ayumi Igarashi, Yasushi Kawase, Kazuhisa Makino, Hanna Sumita, Akihisa Tamura, Yu Yokoi, and Makoto Yokoo: A Fair and Truthful Mechanism with Limited Subsidy.
  Games and Economic Behavior, 144, pp. 49-70, 2024. [Paper]
• Yasushi Kawase and Hanna Sumita: Randomized Strategies for Robust Combinatorial Optimization with Approximate Separation.
  Algorithmica, 86, pp. 566–584, 2024. [Paper]
• Yasushi Kawase, Kei Kimura, Kazuhisa Makino, and Hanna Sumita: Optimal Matroid Partitioning Problems.
  Algorithmica, 83, pp. 1653–1676, 2021. [Paper]
• Yasushi Kawase, Hanna Sumita, and Takuro Fukunaga: Submodular Maximization with Uncertain Knapsack Capacity.
  SIAM Journal on Discrete Mathematics, 33(3), pp. 1121-1145, 2019. [Paper]
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: Total Dual Integrality of the Linear Complementarity Problem.
  Annals of Operations Research, 274(1–2), pp. 531–553, 2019. [Paper]
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: Parameterized Complexity of Sparse Linear Complementarity Problems.
  Algorithmica, 79(1), pp. 42-65, 2017. [Paper]
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: The Linear Complementarity Problems with a Few Variables per Constraint.
  Mathematics of Operations Research, 40(4), pp. 1015-1026, 2015. [Paper]

Refereed Conference Proceedings

• Tsubasa Harada, Shinji Ito and Hanna Sumita: Bandit Max-Min Fair Allocation.
  Proceedings of European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases 2025 (ECML PKDD 2025), accepted.
• Yasushi Kawase, Vinh Long Phan, Kazuhisa Makino and Hanna Sumita: Scheduling on Identical Machines with Setup Time and Unknown Execution Time.
  Proceedings of the 19th Algorithms and Data Structures Symposium (WADS 2025), accepted.
• Yasushi Kawase, Koichi Nishimura and Hanna Sumita: Minimizing Symmetric Convex Functions over Hybrid of Continuous and Discrete Convex Sets.
  Proceedings of the 51st EATCS International Colloquium on Automata, Languages, and Programming (ICALP 2024), pp. 96:1-96:19, 2024. [Page]
  (preprint version: Fair Allocation with Binary Valuations for Mixed Divisible and Indivisible Goods [Page])
• Yasushi Kawase, Kazuhisa Makino, Hanna Sumita, Akihisa Tamura and Makoto Yokoo: Towards Optimal Subsidy Bounds for Envy-freeable Allocations.
  Proceedings of the 38th AAAI Conference on Artificial Intelligence (AAAI-24), pp. 9824–9831. [Page]
• Koji Ichikawa, Shinji Ito, Daisuke Hatano, Hanna Sumita, Takuro Fukunaga, Naonori Kakimura, Ken-ichi Kawarabayashi: New Classes of the Greedy-Applicable Arm Feature Distributions in the Sparse Linear Bandit Problem.
  Proceedings of the 38th AAAI Conference on Artificial Intelligence (AAAI-24), pp. 12708–12716. [Page]
• Shinji Ito, Daisuke Hatano, Hanna Sumita, Kei Takemura, Takuro Fukunaga, Naonori Kakimura, and Ken-ichi Kawarabayashi: Bandit Task Assignment with Unknown Processing Time.
  Proceedings of the 37th Annual Conference on Neural Information Processing Systems (NeurIPS 2023), pp. 8937–8957. [Page]
• Yasushi Kawase, Hanna Sumita and Yu Yokoi: Random Assignment of Indivisible Goods under Constraints.
  Proceedings of the 32nd International Joint Conference on Artificial Intelligence (IJCAI-23), pp. 2792–2799. [Page]
• Ayumi Igarashi, Yasushi Kawase, Warut Suksompong, Hanna Sumita: Fair Division with Two-Sided Preferences.
  Proceedings of the 32nd International Joint Conference on Artificial Intelligence (IJCAI-23), pp. 2756–2764. [Page]
• Yasushi Kawase, Atsushi Miyauchi and Hanna Sumita: Stochastic Solutions for Dense Subgraph Discovery in Multilayer Networks.
  Proceedings of the 16th ACM International WSDM Conference (WSDM 2023), pp. 886–894. [Page]
• Yasushi Kawase and Hanna Sumita: Online Max-min Fair Allocation.
  Proceedings of the 15th International Symposium on Algorithmic Game Theory (SAGT 2022), pp. 526–543. [Page]
• Hiromichi Goko, Akitoshi Kawamura, Yasushi Kawase, Kazuhisa Makino, and Hanna Sumita: Online Scheduling on Identical Machines with a Metric State Space.
  Proceedings of the 39th International Symposium on Theoretical Aspects of Computer Science (STACS 2022), pp. 32:1–32:21. [Page]
• Hiromichi Goko, Ayumi Igarashi, Yasushi Kawase, Kazuhisa Makino, Hanna Sumita, Akihisa Tamura, Yu Yokoi, and Makoto Yokoo: Fair and Truthful Mechanism with Limited Subsidy.
  Proceedings of the 21st International Conference on Autonomous Agents and Multi-Agent Systems 2022 (AAMAS 2022), pp. 534–542. [Page]
• Hanna Sumita, Shinji Ito, Kei Takemura, Daisuke Hatano, Takuro Fukunaga, Naonori Kakimura, and Ken-ichi Kawarabayashi: Online Task Assignment Problems with Reusable Resources.
  Proceedings of the 36th AAAI Conference on Artificial Intelligence (AAAI-22), pp. 5199–5207. [Page]
• Kei Takemura, Shinji Ito, Daisuke Hatano, Hanna Sumita, Takuro Fukunaga, Naonori Kakimura, and Ken-ichi Kawarabayashi: A Parameter-Free Algorithm for Misspecified Linear Contextual Bandits.
  Proceedings of the 24th International Conference on Artificial Intelligence and Statistics (AISTATS 2021), pp. 130:3367–3375. [Page]
• Kei Takemura, Shinji Ito, Daisuke Hatano, Hanna Sumita, Takuro Fukunaga, Naonori Kakimura, and Ken-ichi Kawarabayashi: Near-Optimal Regret Bounds for Contextual Combinatorial Semi-Bandits with Linear Payoff Functions.
  Proceedings of the 35th AAAI Conference on Artificial Intelligence (AAAI-21), pp. 9791–9798. [Page]
• Shinji Ito, Daisuke Hatano, Hanna Sumita, Kei Takemura, Takuro Fukunaga, Naonori Kakimura, and Ken-ichi Kawarabayashi: Delay and Cooperation in Nonstochastic Linear Bandits.
  Proceedings of the 34th Annual Conference on Neural Information Processing Systems (NeurIPS 2020), pp. 4872–4883. [Page]
• Yasushi Kawase and Hanna Sumita: On the Max-min Fair Stochastic Allocation of Indivisible Goods.
  Proceedings of the 34th AAAI Conference on Artificial Intelligence (AAAI-20), pp. 2070–2078. [Paper]
• Shinji Ito, Daisuke Hatano, Hanna Sumita, Kei Takemura, Takuro Fukunaga, Naonori Kakimura, and Ken-ichi Kawarabayashi: Oracle-Efficient Algorithms for Online Linear Optimization with Bandit Feedback.
  Proceedings of the 33rd Annual Conference on Neural Information Processing Systems (NeurIPS 2019), pp. 10589–10598. [Page]
• Shinji Ito, Daisuke Hatano, Hanna Sumita, Kei Takemura, Takuro Fukunaga, Naonori Kakimura, and Ken-ichi Kawarabayashi: Improved Regret Bounds for Bandit Combinatorial Optimization.
  Proceedings of the 33rd Annual Conference on Neural Information Processing Systems (NeurIPS 2019), pp. 12027–12036. [Page]
• Daisuke Hatano, Yuko Kuroki, Yasushi Kawase, Hanna Sumita, Naonori Kakimura, and Ken-ichi Kawarabayashi: Non-zero-sum Stackelberg Budget Allocation Game for Computational Advertising.
  Proceedings of the 16th Pacific Rim International Conference on Artificial Intelligence (PRICAI 2019), pp. 568–582. [Page]
• Yasushi Kawase and Hanna Sumita: Randomized Strategies for Robust Combinatorial Optimization.
  Proceedings of the 33rd AAAI Conference on Artificial Intelligence (AAAI-19), pp. 7876–7883. (acceptance ratio 1,150/7,095 = 16.2%) [Page]
• Shinji Ito, Daisuke Hatano, Hanna Sumita, Akihiro Yabe, Takuro Fukunaga, Naonori Kakimura, Ken-ichi Kawarabayashi: Regret Bounds for Online Portfolio Selection with a Cardinality Constraint.
  Proceedings of the 32nd Annual Conference on Neural Information Processing Systems (NeurIPS 2018), pp. 10588–10597. [Page]
• Akihiro Yabe, Daisuke Hatano, Hanna Sumita, Shinji Ito, Naonori Kakimura, Takuro Fukunaga, Ken-ichi Kawarabayashi: Causal Bandits with Propagating Inference.
  Proceedings of the 35th International Conference on Machine Learning (ICML 2018), pp. 5512–5520. [Paper]
• Shinji Ito, Daisuke Hatano, Hanna Sumita, Akihiro Yabe, Takuro Fukunaga, Naonori Kakimura, Ken-ichi Kawarabayashi: Online Regression with Partial Information: Generalization and Linear Projection.
  Proceedings of the 21st International Conference on Artificial Intelligence and Statistics (AISTATS 2018), pp. 1599–1607. [Paper]
• Yasushi Kawase, Hanna Sumita and Takuro Fukunaga: Submodular maximization with uncertain knapsack capacity.
  Proceedings of the 13th Latin American Theoretical Informatics (LATIN 2018), pp. 653–668. [Paper]
• Yasushi Kawase, Kei Kimura, Kazuhisa Makino and Hanna Sumita: Optimal Matroid Partitioning Problems.
  Proceedings of the 28th International Symposium on Algorithms and Computation (ISAAC 2017), pp. 51:1–51:13. [Paper]
• Shinji Ito, Daisuke Hatano, Hanna Sumita, Akihiro Yabe, Takuro Fukunaga, Naonori Kakimura and Ken-ichi Kawarabayashi: Efficient Sublinear-Regret Algorithms for Online Sparse Linear Regression with Limited Observation.
  Proceedings of the 31st Annual Conference on Neural Information Processing Systems (NIPS 2017), pp. 4102–4111. [Paper]
• Hanna Sumita, Yuma Yonebayashi, Naonori Kakimura and Ken-ichi Kawarabayashi: An Improved Approximation Algorithm for the Subpath Planning Problem and Its Generalization.
  Proceedings of the 26th International Joint Conference on Artificial Intelligence (IJCAI 2017), pp. 4412–4418. [Paper]
• Hanna Sumita, Yasushi Kawase, Sumio Fujita and Takuro Fukunaga: Online Optimization of Video-Ad Allocation.
  Proceedings of the 26th International Joint Conference on Artificial Intelligence (IJCAI 2017), pp. 423–429. [Paper]
• Yasushi Kawase, Kei Kimura, Kazuhisa Makino and Hanna Sumita: Min-sum-max matroid partitioning problem.
  Proceedings of the 10th Japanese-Hungarian Symposium on Discrete Mathematics and Its Applications, pp. 335–344.
• Takanori Maehara, Yasushi Kawase, Hanna Sumita, Katsuya Tono and Ken-ichi Kawarabayashi: Optimal Pricing for Submodular Valuations with Bounded Curvature.
  Proceedings of the 31st AAAI Conference on Artificial Intelligence (AAAI-17), pp. 622–628. [Paper]
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: Parameterized Complexity of Sparse Linear Complementarity Problems.
  Proceedings of the 10th International Symposium on Parameterized and Exact Computation (IPEC 2015), pp. 355–364. [Page]
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: Total Dual Integrality of the Linear Complementarity Problem.
  Proceedings of the 9th Hungarian-Japanese Symposium on Discrete Mathematics and Its Applications, pp. 342–351.
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: Sparse Linear Complementarity Problems.
  Proceedings of the 8th Japanese-Hungarian Symposium on Discrete Mathematics and Its Applications, pp. 453–462.
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: Sparse Linear Complementarity Problems.
  Proceedings of the 8th International Conference on Algorithms and Complexity (CIAC 2013), pp. 358–369. [Page]

Preprints

• Tsubasa Harada, Shinji Ito and Hanna Sumita: Bandit Max-Min Fair Allocation.
  arXiv:2505.05169, 2025. [Page]
• Yuni Iwamasa, Tomoki Matsuda, Shunya Morihira and Hanna Sumita: A general framework for finding diverse solutions via network flow and its applications.
  arXiv:2504.17633, 2025. [Page]
• Koichi Nishimura and Hanna Sumita: Envy-freeness and Maximum Nash Welfare for Mixed Divisible and Indivisible Goods.
  arXiv:2302.13342, 2023. [Page]

Talks

International Conferences

• Yasushi Kawase, Koichi Nishimura and Hanna Sumita: Minimizing Symmetric Convex Functions over Hybrid of Continuous and Discrete Convex Sets.
  The 13th Hungarian-Japanese Symposium on Discrete Mathematics and Its Applications, Tokyo, Japan, May 2025.
• Ayumi Igarashi, Yasushi Kawase, Warut Suksompong, Hanna Sumita: Fair Division with Two-Sided Preferences.
  The 32nd International Joint Conference on Artificial Intelligence (IJCAI-23), Macao, August 2023.
• Hanna Sumita, Shinji Ito, Kei Takemura, Daisuke Hatano, Takuro Fukunaga, Naonori Kakimura, and Ken-ichi Kawarabayashi: Online Task Assignment Problems with Reusable Resources. (Oral and poster)
  The 36th AAAI Conference on Artificial Intelligence (AAAI-22), virtual, February 2022.
• Yasushi Kawase and Hanna Sumita: Randomized Strategies for Robust Combinatorial Optimization. (highlight and poster)
  The 33rd AAAI Conference on Artificial Intelligence (AAAI 2019), Honolulu, USA, January 2019.
• Hanna Sumita, Yuma Yonebayashi, Naonori Kakimura and Ken-ichi Kawarabayashi: An Improved Approximation Algorithm for the Subpath Planning Problem and Its Generalization.
  The 26th International Joint Conference on Artificial Intelligence (IJCAI 2017), Melbourne, Australia, August 2017.
• Yasushi Kawase, Kei Kimura, Kazuhisa Makino and Hanna Sumita: Min-sum-max matroid partitioning problem.
  The 10th Japanese-Hungarian Symposium on Discrete Mathematics and Its Applications, Budapest, Hungary, May 2017.
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: Parameterized Complexity of Sparse Linear Complementarity Problems.
  The 10th International Symposium on Parameterized and Exact Computation (IPEC 2015), Patras, Greece, September 2015.
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: Total Dual Integrality of the Linear Complementarity Problem.
  The 22nd International Symposium on Mathematical Programming (ISMP 2015), Pittsburgh, USA, July 2015.
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: Total Dual Integrality of the Linear Complementarity Problem.
  The 9th Hungarian-Japanese Symposium on Discrete Mathematics and Its Applications, Fukuoka, Japan, June 2015.
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: Sparse Linear Complementarity Problems.
  The 8th Japanese-Hungarian Symposium on Discrete Mathematics and Its Applications, Veszprem, Hungary, June 2013.
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: Sparse Linear Complementarity Problems.
  The 8th International Conference on Algorithms and Complexity (CIAC 2013), Barcelona, Spain, May 2013.

Domestic Conferences (in Japanese)

• 河瀬康志，西村康一，澄田範奈: 連続と離散のハイブリッド凸集合上の対称凸関数最小化，
  2024年日本オペレーションズ・リサーチ学会秋季研究発表会，南山大学，2024年9月.
• 河瀬康志，澄田範奈: オンライン割当における最小効用最大化，
  第21回情報科学技術フォーラム（FIT2022）, 慶應義塾大学（ハイブリッド）, 2022年9月.FIT論文賞
• 河瀬康志，澄田範奈，福永拓郎: 不確実なナップサック制約をもつ劣モジュラ関数最大化，
  電子情報通信学会 COMP-ELC学生シンポジウム, 東京電機大学, 2018年3月. 招待講演
• 前原貴憲，河瀬康志，澄田範奈，東野克哉，河原林健一: 劣モジュラ評価関数をもつ最適価格付け問題，
  2017年日本オペレーションズ・リサーチ学会春季研究発表会，沖縄県市町村自治会館，2017年3月.
• 澄田範奈，河瀬康志，藤田澄男，福永拓郎: 動画広告割当のオンライン最適化，
  日本応用数理学会2016年年会，北九州国際会議場，2016年9月.
• 澄田範奈，河瀬康志，藤田澄男，福永拓郎: 動画広告割当のオンライン最適化，
  日本オペレーションズ・リサーチ学会関西支部研究講演会，常翔学園大阪センター，2016年7月.
• 澄田範奈，垣村尚徳，牧野和久: 線形相補性問題のパラメータ化計算量，
  2015年日本オペレーションズ・リサーチ学会春季研究発表会，東京理科大学，2015年3月.
• 澄田範奈，垣村尚徳，牧野和久: 線形相補性問題のパラメータ化計算量，
  電子情報通信学会 COMP-ELC学生シンポジウム, 立命館大学, 2015年3月. 最優秀論文賞
• 澄田範奈，垣村尚徳，牧野和久: 方向つき線形相補性問題の計算複雑度，
  2014年日本オペレーションズ・リサーチ学会秋季研究発表会，北海道科学大学，2014年8月.
• 澄田範奈，垣村尚徳，牧野和久: 線形相補性問題の完全双対整数性，
  日本オペレーションズ・リサーチ学会「最適化の理論と応用」研究部会SOTA，筑波大学，2014年6月.
• 澄田範奈，垣村尚徳，牧野和久: 線形相補性問題の整数性，
  研究集会「最適化：モデリングとアルゴリズム」, 政策研究大学院大学, 2014年3月.
• 澄田範奈，垣村尚徳，牧野和久: 線形相補性問題の完全双対整数性，
  電子情報通信学会 COMP-ELC学生シンポジウム, 新潟大学, 2014年3月.
• 澄田範奈，垣村尚徳，牧野和久: 線形相補性問題の完全双対整数性，
  2014年日本オペレーションズ・リサーチ学会春季研究発表会，大阪大学，2014年3月.
• 澄田範奈，垣村尚徳，牧野和久: 疎な線形相補性問題に対する組合せ的アルゴリズム，
  電子情報通信学会 COMP学生シンポジウム, 岐阜大学, 2013年3月.
• 澄田範奈，垣村尚徳，牧野和久: 疎な線形相補性問題に対する組合せ的アルゴリズム，
  2012年日本オペレーションズ・リサーチ学会秋季研究発表会，ウインクあいち，2012年9月.
• 澄田範奈，垣村尚徳，牧野和久: 疎な線形相補性問題の計算複雑度，
  日本オペレーションズ・リサーチ学会「最適化の理論と応用」研究部会SOTA，筑波大学，2012年6-7月.

Talks in Workshops and Seminars

• 原田翼，伊藤伸志，澄田範奈: バンディット最大最小効用公平割当，
  日本オペレーションズ・リサーチ学会 研究部会「最適化の理論とアルゴリズム」（RAOTA）第9回研究会，国立情報学研究所，2025年3月10日. (in Japanese) [Page]
• Hanna Sumita: Fair Allocation with Binary Valuations for Mixed Divisible and Indivisible Goods via Hybrid Convex Optimization.
  Algorithmics of Fair Division and Social Choice, National University of Singapore, November 25 - December 13 , 2024. [Page]
• Yasushi Kawase and Hanna Sumita: Randomized Strategies for Robust Combinatorial Optimization.
  NeurIPS Meetup Japan 2020, online, December 9, 2020.
• 澄田範奈，河瀬康志，藤田澄男，福永拓郎: Online Optimization of Video-Ad Allocation.
  ERATO感謝祭 SeasonIV，学術総合センター，2017年8月4日. (in Japanese)
• Hanna Sumita, Naonori Kakimura and Kazuhisa Makino: The Linear Complementarity Problem: Sparsity and Integrality.
  Mittagsseminar, ETH Zurich, March 19, 2015.

Book

• Advanced Mathematical Science for Mobility Society, Springer, 2024. (Editor and Chapter 9 author)

Award

• 令和4年度東工大教育賞
• FIT2022 第21回情報科学技術フォーラム FIT論文賞
• COMP-ELC学生シンポジウム(電子情報通信学会2015年総合大会) 最優秀論文賞

所属学会 (Domestic)

• 日本オペレーションズ・リサーチ学会
• 電子情報通信学会

活動実績

• 日本オペレーションズ・リサーチ学会「離散アルゴリズムの応用と理論」研究部会　幹事（2016〜2018年度）
• NeurIPS 2019 Top Reviewers [Page]
• Program Committee of ISAAC 2024, WAOA 2022
• Reviewer of international conferences such as NeurIPS, AAAI, IJCAI, IPCO, APPROX, COMSOC ...
• Organizing Committee of ISAAC 2023, HJ 2025

アウトリーチ

• 8大学同時共同開催「情報学 for all by all」，2024年3月17日.

Degrees

• March 2010, Bachelor of Engineering from Faculty of Engineering, University of Tokyo
• March 2012, Master of Information Science and Technology from Graduate School of Information Science and Technology, University of Tokyo
• March 2015, Doctor of Information Science and Technology from Graduate School of Information Science and Technology, University of Tokyo
  • advisor: Prof. Kazuhisa Makino (moved to Kyoto University in 2013)

Career

• April 2014 - March 2015, Research Fellow of the Japan Society for the Promotion of Science (DC2)
• April 2015 - March 2018, Project researcher, National Institute of Informatics and JST, ERATO, Kawarabayashi Large Graph Project
• April 2018 - March 2020, Assistant Professor, Faculty of Economics and Business Administration, Tokyo Metropolitan University
• April 2020 - March 2023, Associate Professor (Lecturer), Department of Mathematical and Computing Science, School of Computing, Tokyo Institute of Technology
• April 2023 - September 2024, Associate Professor, Department of Mathematical and Computing Science, School of Computing, Tokyo Institute of Technology
• Since October 2024, Associate Professor, Department of Mathematical and Computing Science, School of Computing, Institute of Science Tokyo (due to the merger of the institution)


• Part-time Lecturer (Academic year)
  • 2016 - 2019, Tokyo Institute of Technology
  • 2020 - 2022, Tokyo Metropolitan University