Updated on 2025/01/27

写真a

 
SEKI Hiroyuki
 
Organization
Graduate School of Informatics Department of Computing and Software Systems 3 Professor
Graduate School
Graduate School of Information Science
Graduate School of Informatics
Undergraduate School
School of Engineering
School of Informatics Department of Computer Science
Title
Professor
Contact information
メールアドレス

Degree 1

  1. 工学博士 ( 1987.3   大阪大学 ) 

Awards 18

  1. Best Paper Award

    2019.11   16th International Colloquium on Theoretical Aspects of Computing - ICTAC 2019   Optimal Run Problem for Weighted Register Automata

    Hiroyuki Seki, Reo Yoshimura and Yoshiaki Takata

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  2. 令和5年度研究奨励賞

    2024.3   電子情報通信学会ソフトウェアサイエンス研究会   A Game-theoretic Approach to Indistinguishability of Winning Objectives as User Privacy

    中西凜道,高田喜朗,関浩之

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  3. 令和4年度研究奨励賞

    2023.3   電子情報通信学会ソフトウェアサイエンス研究会   確率的ゲームにおける非協調的合成問題

    小出走,関浩之

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  4. 第9回研究会若手優秀講演賞

    2022.10   電子情報通信学会ディペンダブルコンピューティング研究会   レジスタオートマトンと能力等価な凍結演算子付きmu-計算の部分クラス

    大西晃

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  5. 令和3年度研究奨励賞

    2022.3   電子情報通信学会ソフトウェアサイエンス研究会   確率的ゲームにおける非協調的合成問題

    大西晃,仙田涼摩,高田喜朗,関浩之

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  6. 令和2年度研究奨励賞

    2021.3   電子情報通信学会ソフトウェアサイエンス研究会   重み付き多重文脈自由文法とその性質について

    井上裕介,関浩之

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  7. 学生奨励賞

    2020.9   電子情報通信学会データ工学研究会   木分解と木文法圧縮を利用したグラフ圧縮法および圧縮データへの直接問合せ処理法の提案と評価

    小島和之,関浩之

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  8. 平成29年度研究奨励賞

    2018.5   電子情報通信学会ソフトウェアサイエンス研究会   トップ木に基づく圧縮データに対する直接更新法

    西村卓,橋本健二,関浩之

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  9. 平成26年度研究奨励賞

    2015.5   電子情報通信学会ソフトウェアサイエンス研究会   木文法に基づく圧縮XML文書に対する直接更新手法の評価

    後藤健志,尾上栄浩,橋本健二,関浩之

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  10. 第4回解説論文賞

    2013.9   日本ソフトウェア科学会   言語理論の話をしよう

    関浩之,鰺坂恒夫

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

  11. 平成24年度研究奨励賞

    2013.5   電子情報通信学会ソフトウェアサイエンス研究会   決定性線形下降木変換器における頂点問合せ保存

    宮原一喜,橋本健二,関浩之

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  12. フェロー

    2011.9   電子情報通信学会  

    関浩之

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    Country:Japan

  13. 2006年度論文賞

    2008.12   情報処理学会バイオ情報学研究会   RNA Pseudoknotted Structure Prediction Using Stochastic Multiple Context-Free Grammar

    加藤有己,関浩之,嵩忠雄

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  14. 平成19(2007)年度論文賞

    2008.3   情報処理学会   RNA Pseudoknotted Structure Prediction Using Stochastic Multiple Context-Free Grammar

    加藤有己,関浩之,嵩忠雄

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

  15. 平成19年度ISS活動功労賞

    2007.12   電子情報通信学会情報システムソサイエティ  

    関浩之

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    Country:Japan

  16. 第11回論文賞

    2007.6   日本ソフトウェア科学会   LTL Model Checking for Extended Pushdown Systems with Regular Tree Valuations

    新田直也,関浩之

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

  17. 第21回電気通信普及財団賞(テレコムシステム技術賞)奨励賞

    2006   電気通信普及財団   Temporal Reasoning about Two Concurrent Sequence of Events

    石原靖哲,石井信,関浩之,伊藤実

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    Award type:Award from publisher, newspaper, foundation, etc.  Country:Japan

  18. 平成9(1997)年度論文賞

    1998.3   情報処理学会   抽象的順序機械型代数的仕様からのドキュメント生成システム

    工藤 朋之, 石原 靖哲, 関 浩之, 奥井 順

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

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Papers 87

  1. An Ambiguity Hierarchy of Weighted Context-free Grammars Reviewed

    Yusuke Inoue, Kenji Hashimoto and Hiroyuki Seki

    Theoretical Computer Science   Vol. 974   page: 1 - 12   2023.9

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.tcs.2023.114112

  2. Complexity Results on Register Context-Free Grammars and Related Formalisms Reviewed

    Ryoma Senda, Yoshiaki Takata and Hiroyuki Seki

    Theoretical Computer Science   Vol. 923   page: 99 - 125   2022.5

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.tcs.2022.04.055

  3. Optimal Run Problem for Weighted Register Automata Reviewed

    Hiroyuki Seki, Reo Yoshimura and Yoshiaki Takata

    Theoretical Computer Science   Vol. 850 ( 4 ) page: 185 - 201   2021.1

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.tcs.2020.11.003

  4. An Equational Logic Based Approach to the Security Problem against Inference Attacks on Object-Oriented Database Reviewed

    Yasunori Ishihara, Toshiyuki Morita, Hiroyuki Seki and Minoru Ito

    Journal of Computer and System Sciences   Vol. 73   page: 788-817   2007

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    Language:English   Publishing type:Research paper (scientific journal)  

  5. HBAC: A Model for History-based Access Control and Its Model Checking Reviewed

    Jing Wang, Yoshiaki Takata and Hiroyuki Seki

    11th European Symposium On Research In Computer Security (ESORICS 2006)   Vol. LNCS 4189   page: 263-278   2006.9

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    Authorship:Last author   Language:English   Publishing type:Research paper (international conference proceedings)  

  6. Non-Cooperative Rational Synthesis Problem for Probabilistic Strategies Reviewed

    So Koide, Yoshiaki Takata and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E108-D ( 7 ) page: 1 - 10   2025.7

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transinf.2024EDL8081

  7. Strategies and Equilibria on Indistinguishability of Winning Objectives and Related Decision Problems Reviewed

    Rindo Nakanishi, Yoshiaki Takata and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E108-D ( 3 )   2025.3

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transinf.2024FCP0010

  8. A Subclass of Mu-Calculus with the Freeze Quantifier Equivalent to Buchi Register Automata Reviewed

    Yoshiaki Takata, Akira Onishi, Ryoma Senda and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E107-D ( 12 )   2024.12

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transinf.2024EDL8058

  9. Automata and Grammars for Data Words Invited Reviewed

    Hiroyuki Seki

    28th International Conference on Implementation and Application of Automata (CIAA 2024)   Vol. LNCS ( 15015 ) page: 3 - 16   2024.9

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-031-71112-1_1

  10. Non-Cooperative Rational Synthesis Problem on Stochastic Games for Positional Strategies Reviewed

    So Koide, Yoshiaki Takata and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E107-D ( 3 ) page: 1 - 10   2024.3

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transinf.2023FCP0003

  11. Verification with Common Knowledge of Rationality for Graph Games Reviewed

    Rindo Nakanishi, Yoshiaki Takata and Hiroyuki Seki

    21th International Colloquium on Theoretical Aspects of Computing (ICTAC 2024)   Vol. LNCS 15373   page: 232 - 248   2023.11

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    Authorship:Last author   Language:English   Publishing type:Research paper (international conference proceedings)  

  12. When Is Context-Freeness Distinguishable from Regularity? An Extension of Parikh's Theoremrs Reviewed

    Yusuke Inoue, Kenji Hashimoto and Hiroyuki Seki

    27th International Conference on Implementation and Application of Automata (CIAA 2022)   Vol. LNCS   2023.9

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    Authorship:Last author   Language:English   Publishing type:Research paper (international conference proceedings)  

  13. A Subclass of Mu-Calculus with the Freeze Quantifier Equivalent to Register Automata Reviewed

    Yoshiaki Takata, Akira Onishi, Ryoma Senda and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E106-D ( 3 ) page: 294 - 302   2023.3

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transinf.2022FCP0003

  14. Weighted Multiple Context-free Grammars Reviewed

    Yusuke Inoue, Kenji Hashimoto and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E106-D ( 3 ) page: 309 - 318   2023.3

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transinf.2022FCP0006

  15. Pumping Lemmas for Languages Expressed by Computational Models with Registers Reviewed

    Rindo Nakanishi, Yoshiaki Takata and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E106-D ( 3 ) page: 284 - 293   2023.3

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transinf.2022FCP0004

  16. Reduction of Register Pushdown Systems with Freshness Property to Pushdown Systems in LTL Model Checking Reviewed

    Yoshiaki Takata, Ryoma Senda and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E105-D ( 9 ) page: 1620 - 1623   2022.9

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transinf.2022EDL8030

  17. Active Learning for Deterministic Bottom-up Nominal Tree Automata Reviewed

    Rindo Nakanishi, Yoshiaki Takata and Hiroyuki Seki

    19th International Colloquium on Theoretical Aspects of Computing (ICTAC 2022)     2022.9

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  18. An Ambiguity Hierarchy of Weighted Context-free Grammars Reviewed

    Yusuke Inoue, Kenji Hashimoto and Hiroyuki Seki

    26th International Conference on Implementation and Application of Automata (CIAA 2022)   Vol. LNCS 13266   page: 238 - 250   2022.6

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    Authorship:Last author   Language:English   Publishing type:Research paper (international conference proceedings)  

  19. 木分解の圧縮および解集合プログラミングに基づく問合せ処理法の提案と評価 Reviewed

    小島和之,関浩之

    日本データベース学会和文論文誌   Vol. 20-J ( 16 ) page: 1 - 9   2022.3

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    Authorship:Last author   Language:Japanese   Publishing type:Research paper (scientific journal)  

  20. LTL Model Checking for Register Pushdown Systems Reviewed

    Ryoma Senda, Yoshiaki Takata and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E104-D ( 12 ) page: 2131 - 2144   2021.12

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  21. Reactive Synthesis from Visibly Register Pushdown Automata Reviewed

    Ryoma Senda, Yoshiaki Takata and Hiroyuki Seki

    18th International Colloquium on Theoretical Aspects of Computing (ICTAC 2021)   Vol. 12819   page: 334-353   2021.9

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  22. Forward Regularity Preservation Property of Register Pushdown Systems Reviewed

    Ryoma Senda, Yoshiaki Takata and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E104-D ( 3 ) page: 370 - 380   2021.3

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  23. Reachability of Patterned Conditional Pushdown Systems Reviewed International coauthorship

    Xin Li, Patric Gardy, Yu-Xin Deng and Hiroyuki Seki

    Journal of Computer Science and Technology   Vol. 35 ( 6 )   2020.11

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  24. Generalized Register Context-Free Grammars Reviewed

    Ryoma Senda, Yoshiaki Takata and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E103-D ( 3 ) page: 1-12   2020.3

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  25. Automating Time-series Safety Analysis for Automotive Control Systems Using Weighted Partial Max-SMT Reviewed

    Shuichi Sato, Shogo Hattori, Hiroyuki Seki, Yutaka Inamori and Shoji Yuen

    Journal of Information Processing   Vol. 28   page: 124 - 135   2020.2

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  26. Complexity Results on Register Pushdown Autmata Reviewed

    Ryoma Senda, Yoshiaki Takata and Hiroyuki Seki

    3rd Workshop on Software Foundations for Data Interoperability     page: 000-000   2019.10

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  27. On the Compositionality of Dynamic Leakage and Its Application to the Quantification Problem Reviewed

    Trung Chu Bao, Kenji Hashimoto and Hiroyuki Seki

    13th International Conference on Emerging Security Information, Systems and Technologies     page: 000-000   2019.10

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  28. Quantifying dynamic leakage - Complexity analysis and model counting-based calculation - Reviewed

    Trung Chu Bao, Kenji Hashimoto and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E102-D ( 10 ) page: 1952-1965   2019.10

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  29. Optimal Run Problem for Weighted Register Automata Reviewed

    Hiroyuki Seki, Reo Yoshimura and Yoshiaki Takata

    16th International Colloquium on Theoretical Aspects of Computing (ICTAC 2019)   Vol. 11884   page: 91-110   2019.10

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    Language:English   Publishing type:Research paper (international conference proceedings)  

  30. Generalized Register Context-Free Grammars Reviewed

    Ryoma Senda, Yoshiaki Takata and Hiroyuki Seki

    13th International Conference on Language and Automata Theory and Applications (LATA 2019)   Vol. 11417   page: 259 - 271   2019.3

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  31. Graph Compression by Tree Grammars and Direct Evaluation of Regular Path Query Reviewed

    Takeshi Takeda, Kenji Hashimoto and Hiroyuki Seki

    2019 IEEE 4th International Conference on Computer and Communication Systems     page: CD104   2019.2

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  32. Complexity Results on Register Context-Free Grammars and Register Tree Automata Reviewed

    Ryoma Senda, Yoshiaki Takata and Hiroyuki Seki

    15th International Colloquium on Theoretical Aspects of Computing (ICTAC 2018)   Vol. 11187   page: 415-434   2018.10

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  33. Direct Update of XML Documents with Data Values Compressed by Tree Grammars Reviewed

    Kenji Hashimoto, Ryunosuke Takayama and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E101-D ( 6 ) page: 1467-1478   2018.6

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  34. Counting Algorithms for Recognizable and Algebraic Series Reviewed

    Bao Trung Chu, Kenji Hashimoto, Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E101-D ( 6 ) page: 1479-1490   2018.6

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  35. Availability Checking of Dynamic Spatial Information for Automobiles Reviewed

    Shuichi Sato, Yosuke Watanabe, Hiroyuki Seki and Shoji Yuen

    2nd International Conference on System Reliability and Safety     page: 000   2017.12

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  36. 量的情報流 - 概要と研究動向 - Invited Reviewed

    関浩之

    電子情報通信学会誌   Vol. 100 ( 9 ) page: 974 - 981   2017.9

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    Authorship:Lead author   Language:Japanese  

  37. Automating Time Series Safety Analysis for Automotive Control Systems in STPA using Weighted Partial Max-SMT Reviewed

    Shuichi Sato, Shogo Hattori, Hiroyuki Seki, Yutaka Inamori, Shoji Yuen

    15th International Workshop on Automated Verification of Critical Systems     page: 0-0   2016.11

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  38. Direct Evaluation of Selecting Tree Automata on XML Documents Compressed with Top Trees Reviewed

    Kenji Hashimoto, Suguru Nishimura, Hiroyuki Seki

    4th International Workshop on Trends in Tree Automata and Tree Transducers     page: 0-0   2016.7

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  39. An Extension of Proof Graphs for Disjunctive Parameterized Boolean Equation Systems Reviewed

    Yutaro Nagae, Masahiko Sakai, Hiroyuki Seki

    Rewriting Techniques for Program Transformations and Evaluation     page: 0-0   2016.6

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  40. Query Rewriting for Nondeterministic Tree Transducers Reviewed

    Kazuki Miyahara, Kenji Hashimoto, Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E99-D ( 6 ) page: 1410-1419   2016.6

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  41. Determinacy and Subsumption of Single-valued Bottom-up Tree Transducers Reviewed

    Kenji Hashimoto, Ryuta Swada, Yasunori Ishihara, Hiroyuki Seki, Toru Fujiwara

    IEICE Transactions on Information and Systems   Vol. E99-D ( 3 ) page: 575-587   2016.3

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  42. Automated Hazard Analysis with pMAX-SMT for Automobile Systems Reviewed

    Shogo Hattori, Shoji Yuen, Hiroyuki Seki, Shuichi Sato

    15th International Workshop on Automated Verification of Critical Systems     page: 281-282   2015.9

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  43. Query-based l-diversity Reviewed

    Chittaphone Phonharath, Ryonosuke Takayama, Kenji Hashimoto, Hiroyuki Seki

    7th International Conference on Advances in Databases, Knowledge, and Data Applications     page: 15-20   2015.5

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  44. Node Query Preservation for Deterministic Linear Top-Down Tree Transducers Reviewed

    Kazuki Miyahara, Kenji Hashimoto, Hiroyuki Seki

    IEICE Transactions on Information and System   Vol. E98-D ( 3 ) page: 512 - 523   2015.3

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  45. A Post-Haiyan Community Level Mobility Model Reviewed

    Jovilyn Therese B. Fajardo, Keiichi Yasumoto, Hiroyuki Seki

    8th International Conference on Mibile Computing and Ubiquitous Metworking (ICMU 2015)     2015.1

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    DOI: 10.1109/ICMU.2015.7061034

  46. Information Theoretical Evaluation of the Bucketing Technique to Mitigate Timing Attacks Reviewed

    Yasuyuki Kobayashi, Yuichi Kaji, Hiroyuki Seki

    International Symposium on Information Theory and Its Applications (ISITA 2014)     page: 000-000   2014.10

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  47. Node Query Preservation for Deterministic Linear Top-Down Tree Transducers Reviewed

    Kazuki Miyahara, Kenji Hashimoto, Hiroyuki Seki

    2nd International Workshop on Trends in Tree Automata and Tree Transducers   Vol. EPTCS ( 134 ) page: 27-37   2013.10

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  48. Deciding Schema k-Secrecy for XML Databases Reviewed

    Chittaphone Phonharath, Kenji Hashimoto, Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E96-D ( 6 ) page: 1268-1277   2013.6

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  49. Error Control for High-Density Monochrome Two-Dimensional Barcodes Reviewed

    Ramon Mejia, Yuichi Kaji, Hiroyuki Seki

    IPSJ Transactions on Databases   Vol. 5 ( 2 ) page: 17-25   2013.6

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  50. Determinacy and Subsumption for Single-valued Bottom-up Tree Transducers Reviewed

    Kenji Hashimoto, Ryuta Sawada, Yasunori Ishihara, Hiroyuki Seki, Toru Fujiwara

    7th International Conference on Language and Automata Theory and Applications   Vol. LNCS 7810   page: 335-346   2013.4

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  51. Verification of the Security against Inference Attacks on XML Databases Reviewed

    Chittaphone Phonharath, Kenji Hashimoto and Hiroyuki Seki

    1st International Workshop on Trends in Tree Automata and Tree Transducers     page: 11-22   2012.6

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  52. Trans-Organizational Role-Based Access Control Reviewed

    Ramon Mejia, Yuichi Kaji and Hiroyuki Seki

    ACM Computer and Communications Security     page: 817-820   2011.10

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  53. 言語理論の話をしよう,「ソフトウェアサイエンスの基本」シリーズ第1回 Reviewed

    関 浩之,鰺坂 恒夫

    コンピュータソフトウェア   Vol. 28 ( 3 ) page: 61-69   2011.8

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    Authorship:Lead author   Language:Japanese  

  54. Low-density Parity Check Codes for High-Density 2D Barcode Symbology Reviewed

    Ramon Mejia, Yuichi Kaji and Hiroyuki Seki

    Sixth International Multi-Conference on Computing in the Global Information Technology     page: ICCGI 3   2011.6

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  55. A Grammar-Based Approach to RNA Pseudoknotted Structure Prediction for Aligned Sequences Reviewed

    Nobuyoshi Mizoguchi, Yuki Kato and Hiroyuki Seki

    1st IEEE International Conference on Computational Advances in Bio and medical Sciences     page: 135-140   2011.2

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  56. Automatic Generation of History-based Access Control from Information Flow Specification Reviewed

    Yoshiaki Takata and Hiroyuki Seki

    8th International Symposium on Automated Technology for Verification and Analysis   Vol. LNCS 6252   page: 259-275   2010.9

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  57. Chomsky-Schutzenberger-Type Characterization of Multiple Context-Free Languages Reviewed

    Ryo Yoshinaka, Yuichi Kaji and Hiroyuki Seki

    4th International Conference on Language and Automata Theory and Applications   Vol. LNCS 6031   page: 596-607   2010.5

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  58. Right-linear Finite Path Overlapping Rewrite Systems Effectively Preserve Recognizability Reviewed

    Toshinori Takai, Yuichi Kaji and Hiroyuki Seki

    Scientiae Mathematicae Japonicae   Vol. e2010 ( 23 ) page: e2010-1   2010

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  59. Pairwise RNA Pseudoknotted Structure Prediction Based on Stochastic Grammar Reviewed

    Nobuyoshi Mizoguchi, Yuki Kato and Hiroyuki Seki

    20th International Conference on Genome Informatics     page: P018-1-P018-2   2009.12

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  60. Dynamic Programming Algorithms and Grammatical Modeling for Protein Beta-Sheet Prediction Reviewed

    Yuki Kato, Tatsuya Akutsu and Hiroyuki Seki

    Journal of Computational Biology   Vol. 16 ( 7 ) page: 945-957   2009.7

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  61. Comparison of the Expressive Power of Language-based Access Control Models Reviewed

    Yoshiaki Takata and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E92-D ( 5 ) page: 1033-1036   2009.5

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  62. A Grammatical Approach to RNA-RNA Interaction Prediction Reviewed

    Yuki Kato, Tatsuya Akutsu and Hiroyuki Seki

    Pattern Recognition   Vol. 42   page: 5631-538   2009.4

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  63. Formal Language Theoretic Approach to the Disclosure Tree Strategy in Trust Management Reviewed

    Yoshiaki Takata and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E92-D ( 2 ) page: 200-210   2009.2

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  64. Prediction of Protein Beta-Sheets: Dynamic Programming versus Grammatical Approach Reviewed

    Yuki Kato, Tatsuya Akutsu and Hiroyuki Seki

    Third IAPR International Conference on Pattern Recognition in Bioinformatics   Vol. LNB 5265   page: 66-77   2008.10

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  65. 実行履歴に基づくアクセス制御の形式モデルと検証 Reviewed

    高田喜朗, 王静, 関浩之

    電子情報通信学会論文誌   Vol. J91-D ( 4 ) page: 847-858   2008.4

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  66. On the Generative Power of Multiple Context-Free Grammars and Macro Grammars Reviewed

    Hiroyuki Seki and Yuki Kato

    IEICE Transactions on Information and Systems   Vol. E91-D ( 2 ) page: 209-221   2008.2

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  67. New Certificate Chain Discovery Methods for Trust Establishment in Ad Hoc Networks and Their Evaluatio Reviewed

    Hisashi Mohri, Ikuya Yasuda, Yoshiaki Takata and Hiroyuki Seki

    Journal of Information Processing   Vol. 49 ( 1 ) page: 362-374   2008.1

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  68. A Grammatical Approach to RNA-RNA Interaction Prediction Reviewed

    Yuki Kato, Tatsuya Akutsu and Hiroyuki Seki

    Poster Abstracts of the 6th Asia Pacific Bioinformatics Conference     page: P79   2008.1

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    Language:English  

  69. A Grammatical Approach to RNA-RNA Interaction Prediction Reviewed

    Yuki Kato, Tatsuya Akutsu and Hiroyuki Seki

    2007 International Symposium on Computational Models for Life Sciences   Vol. AIP 952   page: 197-206   2007.12

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  70. Languages Modulo Normalization Reviewed

    Hitoshi Ohsaki and Hiroyuki Seki

    6th International Symposium on Frontiers of Combining Systems   Vol. LNAI 4720   page: 221-236   2007.9

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  71. A Labeled Transition Model A-LTS for History-based Aspect Weaving and Its Expressive Power Reviewed

    Isao Yagi, Yoshiaki Takata and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E90-D ( 5 ) page: 799-807   2007.5

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  72. Certification Chain Discovery in Web of Trust for Ad Hoc Networks Reviewed

    Hisashi Mohri, Ikuya Yasuda, Yoshiaki Takata and Hiroyuki Seki

    2007 IEEE International Symposium on Ubisafe Computing   ( 2 ) page: 479-485   2007.5

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  73. RNA Pseudoknotted Structure Prediction Using Stochastic Multiple Context-Free Grammar Reviewed

    Yuki Kato, Hiroyuki Seki and Tadao Kasami

    IPSJ Transactions on Bioinformatics   Vol. 47 ( SIG 17 (TBIO 1) ) page: 12-21   2006.11

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  74. A Static Analysis using Tree Automata for XML Access Control Reviewed

    Isao Yagi, Yoshiaki Takata and Hiroyuki Seki

    Computer Software   Vol. 23 ( 3 ) page: 51-65   2006.7

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  75. Stochastic Multiple Context-Free Grammar for RNA Pseudoknot Modeling Reviewed

    Yuki Kato, Hiroyuki Seki and Tadao Kasami

    8th International Workshop on Tree Adjoining Grammar and Related Formalisms     page: 57-64   2006.7

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  76. RNA Structure Prediction Including Pseudoknots Based on Stochastic Multiple Context-Free Grammar Reviewed

    Yuki Kato, Hiroyuki Seki and Tadao Kasami

    Probabilistic Modeling and Machine Learning in Structural and Systems Biology     page: 32-37   2006.6

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  77. Integrating Presence Inference into Trust Management for Ubiquitous Systems Reviewed

    Jun Noda, Mie Takahashi,Itaru Hosomi, Hisashi Mouri, Yoshiaki Takata and Hiroyuki Seki

    11th ACM Symposium on Access Control Models and Technologies     page: 59-68   2006.6

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  78. XML文書に対するアクセシビリティ・ガイドライン適合性検証 Reviewed

    高田喜朗, 中村岳志, 関浩之

    電子情報通信学会論文誌   Vol. J89-D ( 4 ) page: 705-715   2006.4

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  79. A Formal Model for Stateful Trust Management Systems Reviewed

    Hisashi Mouri, Yoshiaki Takata and Hiroyuki Seki

    IASTED International Conference on Software Engineering and Applications   Vol. 467 ( 030 ) page: 87-92   2005.11

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  80. A Static Analysis using Tree Automata for XML Access Control Reviewed

    Isao Yagi, Yoshiaki Takata and Hiroyuki Seki

    Third International Symposium on Automated Technology for Verification and Analysis   Vol. LNCS 3707   page: 234-247   2005.10

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  81. An Efficient Method for Optimal Probe Deployment of Distributed IDS Reviewed

    Jing Wang, Naoya Nitta and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E88-D ( 8 ) page: 1948-1957   2005.8

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  82. Policy Controlled System and Its Model Checking Reviewed

    Shigeta Kuninobu, Yoshiaki Takata, Naoya Nitta and Hiroyuki Seki

    IEICE Transactions on Information and Systems   Vol. E88-D ( 7 ) page: 1685-1696   2005.7

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  83. LTL Model Checking for Extended Pushdown Systems with Regular Tree Valuations Reviewed

    Naoya Nitta and Hiroyuki Seki

    Computer Software   Vol. 22 ( 3 ) page: 58-75   2005.7

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  84. On the Generative Power of Grammars for RNA Secondary Structure Reviewed

    Yuki Kato, Hiroyuki Seki and Tadao Kasami

    IEICE Transactions on Information and Systems   Vol. E88-D ( 1 ) page: 53-64   2005.1

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  85. Temporal Reasoning about Two Concurrent Sequence of Events, SIAM Journal on Computing Reviewed

    Yasunori Ishihara, Shin Ishii, Hiroyuki Seki and Minoru Ito

    SIAM Journal on Computing   Vol. 34 ( 2 ) page: 498-513   2005

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  86. Subclasses of Tree Adjoining Grammar for RNA Secondary Structure Reviewed

    Yuki Kato, Hiroyuki Seki and Tadao Kasami

    7th International Workshop on Tree Adjoining Grammar and Related Formalisms     page: 48-55   2004.5

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  87. Accessibility Verification of WWW documents by an Automatic Guideline Verification Tool Reviewed

    Yoshiaki Takata, Takeshi Nakamura and Hiroyuki Seki

    37th Hawaii International Conference on System Sciences     page: 98   2004.1

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▼display all

Books 2

  1. 電気工学ハンドブック(第7版),1編 数学 第9章 情報数学 9.2 形式論理と計算論

    電気学会(編)( Role: Joint author)

    オーム社  2013.9  ( ISBN:978-4-274-21382-3

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    Language:Japanese

  2. The Mathematics of Language, 12th Biennial Conference, MOL 12, Lecture Notes in Artificial Intelligence

    Makoto Kanazawa, Andras Kornai, Marcus Kracht and Hiroyuki Seki( Role: Joint author)

    Springer  2011.9 

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    Language:English

Presentations 63

  1. 多プレイヤーゲームにおける制約付きセキュア均衡の存在性

    水野紘希,中西凜道,関浩之

    電子情報通信学会技術研究報告, 124(326), SS2024-23, 13-18  2025.1.12 

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    Event date: 2025.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:鹿児島市   Country:Japan  

  2. 合理性に関する共有知識の下でのグラフゲームの検証

    坂尾優斗,関浩之

    電子情報通信学会技術研究報告, 124(217), SS2024-17, 16-21  2024.10.17 

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    Event date: 2024.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢市   Country:Japan  

  3. プライバシとサービス品質とのトレードオフを考慮した時空間データ保護手法

    脇田侑輝,関浩之

    電子情報通信学会技術研究報告, 124(133), SS2024-8, 43-48  2024.1.18 

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    Event date: 2024.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢市   Country:Japan  

  4. グラフ上のゲームにおける勝利目的の識別不能性のプライバシー保護への応用

    中西凜道,高田喜朗,関浩之

    第18回組合せゲーム・パズル研究集会,発表番号2  2024.3.15 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:調布市   Country:Japan  

  5. 周期的な正則言語の巡回群による半直積分解

    井上裕介,橋本健二,関浩之

    2024.3.6 

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    Event date: 2024.3

    Language:English   Presentation type:Oral presentation (general)  

  6. When Is Context-Freeness Distinguishable from Regularity? An Extension of Parikh's Theorem

    Yusuke Inoue, Kenji Hashimoto and Hiroyuki Seki

    2024.3.6 

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    Event date: 2024.3

    Language:English   Presentation type:Oral presentation (general)  

  7. 確率的Büchiゲームにおけるドゥームズデイ均衡の存在判定問題

    水野紘希,中西凜道,関浩之

    電子情報通信学会技術研究報告, 123(335), SS2023-47, 93-98  2024.1.18 

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    Event date: 2024.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢市   Country:Japan  

  8. レジスタ付き多プレイヤーゲームに基づくシステム自動合成問題

    坂尾優斗,関浩之

    電子情報通信学会技術研究報告, 123(335), SS2023-40, 52-57  2024.1.18 

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    Event date: 2024.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢市   Country:Japan  

  9. A Game-Theoretic Approach to Indistinguishability of Winning Objectives as User Privacy

    Rindo Nakanishi, Yoshiaki Takata and Hiroyuki Seki

    電子情報通信学会技術研究報告, 123(206), SS2023-27, 32-37  2023.10.12 

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    Event date: 2023.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:長野市   Country:Japan  

  10. データ木書換え系の正則保存性 -線形単項標準形に分解可能なクラス-

    坂尾優斗,関浩之

    電子情報通信学会技術研究報告, 122(432), SS2022-62, 91-96  2023.3.15 

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:那覇市   Country:Japan  

  11. An Ambiguity Hierarchy of Weighted Context-free Grammars

    Yusuke Inoue, Kenji Hashimoto and Hiroyuki Seki

    2023.3.7 

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    Event date: 2023.3

    Language:English   Presentation type:Oral presentation (general)  

  12. 確率的ゲームにおける非協調的合成問題

    小出走,関浩之

    電子情報通信学会技術研究報告, 122(225), SS2022-23, 10-15  2022.10.25 

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    Event date: 2022.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福島市   Country:Japan  

  13. Active Learning for Deterministic Bottom-up Nominal Tree Automata

    Rindo Nakanishi, Yoshiaki Takata and Hiroyuki Seki

    電子情報通信学会技術研究報告, 122(225), SS2022-24, 16-21  2022.10.25 

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    Event date: 2022.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:福島市   Country:Japan  

  14. 重み付き文脈自由文法の曖昧さ階層について

    井上裕介,橋本健二,関浩之

    2022.7.20 

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    Event date: 2022.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  15. データ語書換え系の正則保存性とそのプロトコル検証への応用

    坂尾優斗,関浩之

    電子情報通信学会技術研究報告, 121(416), SS2021-46, 25-30  2022.3.7 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  16. 確率的Mullerゲームにおける非協調的合成問題について

    小出走,関浩之

    第16回 組合せゲーム・パズル研究集会  2022.3.7 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  17. 重み付き文脈自由文法の曖昧さ階層について

    井上裕介,関浩之

    電子情報通信学会技術研究報告, 121(407), COMP2021-31, 1-7  2022.3.6 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  18. Pumping lemmas for languages expressed by computational models with registers

    Rindo Nakanishi, Yoshiaki Takata and Hiroyuki Seki

    LA Symposium, 16  2022.2.2 

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    Event date: 2022.2

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  19. 木分解の圧縮および解集合プログラミングによる問合せ

    小島和之,関浩之

    電子情報通信学会技術研究報告, 121(314), DE2021-16, 7-12  2021.12.27 

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    Event date: 2021.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  20. レジスタオートマトンと能力等価な凍結演算子付きmu-計算の部分クラス

    大西晃,仙田涼摩,高田喜朗,関浩之

    電子情報通信学会技術研究報告, 121(204), SS2021-17, 23-28  2021.10.19 

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    Event date: 2021.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  21. レジスタオートマトンに変換可能な凍結演算子付き線形時相論理の部分クラス

    大西晃,仙田涼摩,高田喜朗,関浩之

    電子情報通信学会技術研究報告, 120(407), SS2020-29, 7-12  2021.3.3 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  22. 重み付き多重文脈自由文法とその性質について

    井上裕介,関浩之

    電子情報通信学会技術研究報告, 120(407), SS2020-28, 1-6  2021.3.3 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  23. レジスタをもつ計算モデルの表現する言語に対するポンプの補題

    中西凜道,仙田涼摩,高田喜朗,関浩之

    電子情報通信学会技術研究報告, 120(343), SS2020-26, 72-77  2021.1.27 

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    Event date: 2021.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  24. LTL model checking for register pushdown systems

    Ryoma Senda, Yoshiaki Takata and Hiroyuki Seki

    IEICE Technical Report, 120(193), SS2020-6, 7-12  2020.10.19 

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    Event date: 2020.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  25. 木分解と木文法圧縮を利用したグラフ圧縮法および圧縮データへの直接問合せ処理法の提案と評価

    小島和之,関浩之

    電子情報通信学会技術研究報告, 120(362), DE2020-13, 49-54  2020.9.5 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  26. On the regularity preservation property of register pushdown systems

    Ryoma Senda, Yoshiaki Takata and Hiroyuki Seki

    LA Symposium  2020.2.7 

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    Event date: 2020.2

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  27. モデル計数に基づく動的QIF解析法の提案と評価

    福田大地,関浩之

    電子情報通信学会技術研究報告, 119(362), 49-54 

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    Event date: 2020.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:広島市   Country:Japan  

  28. Quantitative Information Flow - An Introduction Invited International conference

    Hiroyuki Seki

    3rd Workshop on Software Foundations for Data Interoperability  2019.10.28 

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    Event date: 2019.10

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Fukuoka   Country:Japan  

  29. Computing optimal weight in weighted register automata and related decision problems

    Reo Yoshimura, Yoshiaki Takata and Hiroyuki Seki

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    Event date: 2019.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  30. 動的情報漏洩量の解析および適応的制御入力最適化

    三輪竜矢,関浩之

    電子情報通信学会技術研究報告, 118(471), SS2018-68, 97-102  2019.3.4 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:那覇市   Country:Japan  

  31. 重み付きレジスタオートマトンの最小重み実行問題

    吉村玲勇,関浩之

    電子情報通信学会技術研究報告, 118(385), SS2018-37, 61-66  2019.1.16 

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    Event date: 2019.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:那覇市   Country:Japan  

  32. 有向グラフに対する圧縮法および圧縮グラフに対する頂点選択問合せ評価法の提案

    武田健志,橋本健二,関浩之

    第10回データ工学と情報マネジメントに関するフォーラム(DEIM 2018) 

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    Event date: 2018.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:あわら市   Country:Japan  

  33. 非決定性選択木オートマトンの決定化

    川本将也,橋本健二,関浩之

    情報処理学会第117回プログラミング研究会(講演番号:2017-4-(2)) 

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    Event date: 2018.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:高知市   Country:Japan  

  34. レジスタ付き文脈自由文法に関する所属問題と空問題の計算複雑さ

    仙田涼摩,関浩之

    電子情報通信学会技術研究報告, 117(381), 41-46 

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    Event date: 2018.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:広島市   Country:Japan  

  35. トップ木に基づく圧縮データに対する直接更新法

    西村卓, 橋本健二,関浩之

    電子情報通信学会技術研究報告, 117(248), 7-12 

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    Event date: 2017.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:高知市   Country:Japan  

  36. 木文法に基づくグラフ圧縮法および圧縮グラフに対する頂点選択問合せ評価法

    武田健志,橋本健二,関浩之

    電子情報通信学会技術研究報告 117(136), 1-6 

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    Event date: 2017.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:函館市   Country:Japan  

  37. モデル計数を用いた量的情報流解析のための論理式簡約と静的解析

    中島聖斗,橋本健二,酒井正彦,関浩之

    電子情報通信学会技術研究報告, 116(512), SS2016-61, 7-12 

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    Event date: 2017.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  38. 木文法に基づき圧縮されたXML文書に対するデータ値を考慮した直接更新法

    高山隆之介,橋本健二,関浩之

    第9回データ工学と情報マネジメントに関するフォーラム(DEIM 2017) 

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    Event date: 2017.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  39. Counting for Recognizable and Algebraic Series

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    Event date: 2017.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  40. あるクラスのXPath式から先読み付き決定性選択木オートマトンへのスキーマを用いた変換

    川本将也,橋本健二,関浩之

    電子情報通信学会技術研究報告, 116(426), SS2016-54, 107-112 

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    Event date: 2017.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:彦根市   Country:Japan  

  41. OSS開発におけるパッチの特徴量を用いた再投稿要求の予測

    安藤聡志,伊原彰紀,関浩之,平尾俊貴,則兼卓人,松本健一

    情報処理学会研究報告ソフトウェア工学(SE), 2016-SE-194(4), 1-5 

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    Event date: 2016.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  42. #SMTツールを用いた量的情報流解析手法の高速化

    中島聖斗,Trung Chu Bao, 橋本健二,酒井正彦,関浩之

    電子情報通信学会技術研究報告,116(277), SS2016-26, 49-54 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  43. 木文法に基づく圧縮XML文書に対するデータ値を考慮した直接更新手法

    高山隆之介,橋本健二,関浩之

    電子情報通信学会技術研究報告,116(277), SS2016-27, 55-60 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  44. トップ木に基づく木圧縮法の実装と問合せ処理法の提案

    西村卓,橋本健二,関浩之

    電子情報通信学会技術研究報告,116(127), SS2016-10, 93-98 

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    Event date: 2016.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  45. 難読性の高いMalbolgeコードを生成するコンパイラのための中間言語

    河邉翔平,酒井正彦,西田直樹,関浩之

    電子情報通信学会技術研究報告,116(127), SS2016-12, 105-11 

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    Event date: 2016.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  46. On the query preservation for nondeterministic tree transducers

    Kazuki Miyahara, Kenji Hashimoto and Hiroyuki Seki

    IEICE Technical Report 

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    Event date: 2016.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  47. 非決定性木変換器における問合せ保存

    宮原一喜,橋本健二,関浩之

    第18回プログラミングおよびプログラミング言語ワークショップPPL2016 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  48. 圧縮構造化文書のための更新手法の拡張とその実験的評価

    後藤健志,高山隆之介,橋本健二,関浩之

    電子通信学会技術研究報告,115(486), LOIS2015-75, 69-74 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  49. OSS開発におけるソースコード静的解析手法を用いたパッチ検証手法の提案

    安藤聡志,平尾俊貴,伊原彰紀,松本健一,関浩之

    ウィンターワークショップ2016・イン・逗子 

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    Event date: 2016.2

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  50. A method for making proof graph finite on disjunctive parameterised Boolean equation systems

    Yutaro Nagae, Masahiko Sakai, Hiroyuki Seki

    IEICE Technical Report, 115(420), SS2015-58, 81-85 

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    Event date: 2016.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  51. モデル計数を用いたXMLデータベースのk-安全性検査システムの高速化

    浅井孝俊,橋本健二,関浩之

    電子情報通信学会技術研究報告,115(420), SS2015-52, 47-52 

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    Event date: 2016.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  52. 拡張線形ボトムアップ木変換器の関数性の多項式時間判定

    石原 鷹, 橋本 健二, 関 浩之, 酒井 正彦

    第104回情報処理学会・プログラミング研究会, 2015-1-(1) 

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    Event date: 2015.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  53. 量的情報流と差分プライバシー

    関浩之

    電子情報通信学会技術研究報告, 115(20), SS2015-4, 17-22 

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    Event date: 2015.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  54. Query-based l-diversity

    6. Chittaphone Phonharath, Ryonosuke Takayama, Kenji Hashimoto, Hiroyuki Seki

    IEICE Technical Report, 115(20), SS2015-14, 65-70 

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    Event date: 2015.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  55. モデル計数を用いたXMLデータベースのk-安全性検査

    浅井孝俊,上杉正紀,橋本健二,関浩之

    電子情報通信学会技術研究報告,115(420), SS2015-52, 47-52 

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    Event date: 2015.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  56. 木文法に基づく圧縮XML文書に対する直接更新手法の評価

    後藤健志,尾上栄浩,橋本健二,関浩之

    電子情報通信学会技術研究報告, 114(416), SS2014-45, 73-78 

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    Event date: 2015.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  57. RSA暗号の高速化手法に対するタイミング攻撃の情報理論的安全性評価

    小林靖幸,楫勇一,関浩之,伊藤実

    2015年暗号と情報セキュリティシンポジウム(SCIS2015), 4F1-2 

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    Event date: 2015.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  58. セキュリティやプライバシーの定量的尺度について

    関浩之

    電子情報通信学会技術研究報告, IT2014-52, 114(353), 13-18 

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    Event date: 2014.12

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  59. 木文法による圧縮XML文書に対する問合せと更新手法

    尾上栄浩,橋本健二,関浩之

    電子情報通信学会技術研究報告, 114(271), SS2014-28, 17-22 

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    Event date: 2014.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  60. Quantitative evaluation of the key information that is learned through timing attack The contribution of bucketing technique for RSA cryptosystem

    Yasuyuki Kobayashi, Yuichi Kaji, Hiroyuki Seki, Minoru Ito

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    Event date: 2014.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  61. Towards HMM parameter estimation with differential privacy

    Nut Sornchumni, Kenji Hashimoto and Hiroyuki Seki

    IPSJ SIG on Mathematical Modeling and Problem Solving, 2014-MPS-98(25) 

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    Event date: 2014.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  62. デバイスペアリングを利用した位置証明プロトコルの提案

    小田 将之, 橋本 健二, 楫 勇一, 関 浩之

    情報処理学会研究報告, 2014-DPS-158(37) 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  63. Runtime Control of a Program based on Quantitative Information Flow

    Bao Trung Chu, Kenji Hashimoto, Hiroyuki Seki

    IEICE Technical Report, 113(422), SS2013-60, 71-76 

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    Event date: 2014.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

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KAKENHI (Grants-in-Aid for Scientific Research) 7

  1. データハイブリッドなリアクティブプログラムの解析技術と自動合成・説明抽出への応用

    Grant number:22H03568  2022.4 - 2025.3

    科学研究費助成事業  基盤研究(B)

    関 浩之, 小川 瑞史, 結縁 祥治, 橋本 健二

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    Authorship:Principal investigator 

    Grant amount:\13910000 ( Direct Cost: \10700000 、 Indirect Cost:\3210000 )

    組込み制御ソフトウェアに代表されるリアクティブプログラムの信頼性を担保するための数理的手法を実用システムに適用可能にするためには,データ値,時間,確率等の量的概念を考慮した計算モデルの設定が鍵となる.本研究ではこのような問題意識のもとに,以下の課題に取り組む.
    データ値を扱うモデルであるレジスタ計算モデルについて,表現能力の同定,基本問題の計算量解析,特にリアクティブ合成問題とそれに関連するゲーム構造の数理的解析を行う.
    重みとは,コスト等,計算に従って発生する付随量を表す.重み付き計算モデルの表現能力を明らかにし,重み付き計算モデルの対話的学習アルゴリズムを開発して,説明可能AIへ応用する.

  2. データハイブリッドなリアクティブプログラムの解析技術と自動合成・説明抽出への応用

    Grant number:23K24824  2022.4 - 2025.3

    科学研究費助成事業  基盤研究(B)

    関 浩之, 小川 瑞史, 結縁 祥治, 橋本 健二

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    Authorship:Principal investigator 

    Grant amount:\13910000 ( Direct Cost: \10700000 、 Indirect Cost:\3210000 )

    組込み制御ソフトウェアに代表されるリアクティブプログラムの信頼性を担保するための数理的手法を実用システムに適用可能にするためには,データ値,時間,確率等の量的概念を考慮した計算モデルの設定が鍵となる.本研究ではこのような問題意識のもとに,以下の課題に取り組む.
    データ値を扱うモデルであるレジスタ計算モデルについて,表現能力の同定,基本問題の計算量解析,特にリアクティブ合成問題とそれに関連するゲーム構造の数理的解析を行う.
    重みとは,コスト等,計算に従って発生する付随量を表す.重み付き計算モデルの表現能力を明らかにし,重み付き計算モデルの対話的学習アルゴリズムを開発して,説明可能AIへ応用する.
    レジスタ計算モデルに関する研究:データ値を扱う計算モデルであるレジスタオートマトン(RA), レジスタ文脈自由文法(RCFG), レジスタ木オートマトン(RTA)の能力を考察するため,それらの表現する言語クラスに対するポンプ補題を証明した.本補題を用い,RA, RCFG, RTAでは表現できない言語の具体例を示した.
    RAに対応する論理として,凍結演算子付きμ-計算(μ↓-計算)が知られている.しかしμ↓-計算は表現能力が大きすぎて自動検証への応用は難しい.本研究では,論理積に関する制約(高々一方のオペランドにしか凍結演算子,X以外の時相演算子を含まない)を満たす部分クラスμd↑-計算を定義し,RAとμd↑-計算の表現能力が同一であることを証明した.
    ノミナル集合はデータ値の無限集合を群論的に拡張した概念である.本研究では,決定性上昇型ノミナル木オートマトン(DBNTA)を定義し,DBNTAに対する対話型学習アルゴリズムを提案した.ノミナル集合上の適切な半順序を定義し,2つの軌道有限集合間にこの半順序に関する無限鎖が存在しないことを示すことで,提案アルゴリズムの停止性を証明した.
    重み付きモデルに関する研究:多重文脈自由文法(mcfg)は文脈自由文法(cfg)の自然な拡張である.本研究では,mcfgに重みを導入したwmcfgを定義した.wmcfgは語の組を重みに対応づける関数を表現する.続いて,wmcfgに対する2つの基本問題が多項式時間判定可能であること,wmcfgによって表現される関数のクラスが,基本的な4つの演算に対して閉じていること等を証明した.
    重み付きcfg(wcfg)は,cfgに重みを導入した計算モデルである.本研究では,トロピカル半環上の無あいまいwcfg, 有限あいまいwcfg, 多項式あいまいwcfg, および,一般のwcfgの間に,表現能力に関する真の階層関係が存在すること等を証明した.
    学術誌に3編,および,当該専門分野の査読付き国際会議に2編フルペーパーが採択されている等,十分な成果が上がっていることから,進捗状況はおおむね順調であるといえる.
    今後は,計算モデルとしてオートマトンや形式文法を用いると同時に,ゲーム構造を用いてソフトウェア検証,プログラム自動合成およびプライバシー保護に関する基礎的研究を行う.具体的に,リアクティブプログラムの自動合成問題(合成問題と略)に関する二つの課題に取り組む.一つは確率的ゲーム構造に対する非協調的合成問題(合成しようとするシステムに対して,環境が必ずしも協調するとは限らないという現実的設定のもとで,システムが勝利するようなNash均衡が存在するならば,それを構成する問題)である.
    もう一つは,レジスタ付き合成問題(頂点にデータ値が関連づけられた有向グラフ上のゲームにおいて,RAで与えられる仕様すなわち勝利目的を満たすレジスタ変換器を構成する問題)である.
    また,ゲームにおけるプレイヤーの勝利目的をそのプレイヤー(ユーザ)のプライバシー情報とみなし,ゲームを観測する敵対者がプレイヤーの勝利目的を推測するのをできる限り困難とするような戦略(識別不能戦略)および,どのプレイヤーも単独では推測困難性を大きくすることはできないような戦略の組(勝利目的識別不能均衡)を定義し,それらに関する判定問題の判定可能性や計算量を解析する.
    形式言語の周期性に関しては,ある種の周期性をもつ正規言語を,巡回群などを用いて代数的に分解する手法を考察する.

  3. Network of automata with data based on compositional active learning

    Grant number:21H03415  2021.4 - 2026.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s) 

  4. A design of automaton network with data and time based on a compositional active learning

    Grant number:23K21654  2021.4 - 2026.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s) 

  5. Understanding malware semantics by AI-supported formal methods

    Grant number:20K20625  2020.7 - 2026.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Pioneering)

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    Authorship:Coinvestigator(s) 

  6. Quantitative extension of formal models and its application to software analysis

    Grant number:19H04083  2019.4 - 2023.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Seki Hiroyuki

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    Authorship:Principal investigator 

    Grant amount:\17160000 ( Direct Cost: \13200000 、 Indirect Cost:\3960000 )

    We studied on the following three research topics. First, we proposed two notions on dynamic quantitative information flow (QIF), analyzed the complexity for computing these QIFs and implemented a tool for computing these QIFs based on model counting tools. Second, we investigated the complexity of basic problems on register context-free grammar (RCFG). We then proposed generalized RCFG and provided a sufficient condition for an RCFG to have decidability property on basic problems. As an application of register models to software verification, we studied LTL (linear-time temporal logic) model checking for register pushdown systems. We also proposed a subclass of mu-calculus with the freeze quantifiers which are equivalent to register automata. Furthermore, we investigated the reactive synthesis from visibly register pushdown automata. Third, we introduced the optimal run problem for weighted register automata and analyzed its complexity.

  7. A reversible debugging model for real-time concurrent programs

    Grant number:17H01722  2017.4 - 2021.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    YUEN SHOJI

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    Authorship:Coinvestigator(s) 

    The objectives of this research seek a technology based on reversible computing to provide a novel technique for analysing concurrent programs. Recent software technology of development and maintenance requires behavioural analysis with the past configurations. Concurrency often makes such analysis difficult since the behaviour is inherently nondeterministic, and a replay of execution involves the information of forward executions, which are usually discarded.
    In this respect, we investigate a technique base on the formal model analysing reversible execution of concurrent software. We apply the technique to the behaviour analysis, mainly aiming at efficient debugging of concurrent programs. We also investigate analysis techniques for concurrent programs and debuggers, including information compression, timed automaton model, and session types.

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Industrial property rights 9

  1. 鍵の生成方法

    関浩之,中村嘉隆,野田潤

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    Application no:PCT/JP2011/080583  Date applied:2011.12

    Patent/Registration no:5879653  Date registered:2016.2 

    Country of applicant:Domestic  

  2. 鍵の生成方法、装置及びプログラム

    野田 潤, 関 浩之, 中村 嘉隆

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    Application no:特願2010-293094  Date applied:2010.12

    Country of applicant:Domestic  

  3. 鍵管理装置、サービス提供装置、アクセス管理システム、アクセス管理方法、制御プログラム、およびコンピュータ読み取り可能な記録媒体

    楫 勇一,関 浩之

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    Application no:特願2010-149517  Date applied:2010.6

    Country of applicant:Domestic  

  4. 暗号鍵生成システム、暗号鍵生成方法および暗号鍵生成用プログラム

    仁野 裕一, 野田 潤, 関 浩之, 中村 嘉隆, 南 貴博

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    Application no:特願2009-31154  Date applied:2009.2

    Patent/Registration no:特許第5463516号  Date registered:2014.1 

    Country of applicant:Domestic  

  5. 位置情報推定方法、位置情報推定装置、及び位置情報推定プログラム

    野田 潤, 高田 喜朗, 関 浩之、野田 三恵

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    Application no:特願2006-240234  Date applied:2006.9

    Patent/Registration no:特許第4848900号  Date registered:2011.10 

    Country of applicant:Domestic  

  6. 情報処理システム、情報処理装置、情報処理方法、および情報処理プログラム

    野田 潤, 高田 喜朗, 関 浩之, 細見 格, 高橋 三恵

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    Application no:特願2005-256644  Date applied:2005.9

    Patent/Registration no:特許第4735141号  Date registered:2011.5 

    Country of applicant:Domestic  

  7. 信用確立方法と信用に基づいたサービス制御システム

    野田 潤, 田口 大悟, 関 浩之, 高田 喜朗, 仁野 裕一

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    Application no:特願2004-182039  Date applied:2004.6

    Country of applicant:Domestic  

  8. 情報通信方法およびシステム

    田口 大悟, 仁野 裕一, 関 浩之, 高田 喜朗

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    Application no:特願2003-409917  Date applied:2003.12

    Country of applicant:Domestic  

  9. データ管理装置及びデータ管理プログラム

    田口 大悟, 関 浩之, 細見 格, 中江 政行, 楫 勇一, 高田 喜朗

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    Application no:特願2002-158577  Date applied:2002.5

    Patent/Registration no:特許第4000916号  Date registered:2007.8 

    Country of applicant:Domestic  

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