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Search DetailsOKIMOTO TendaGraduate School of Maritime Sciences / Department of Maritime SciencesAssociate Professor
Profile
Since 2012, I worked as an assistant professor in Transdisciplinary Research Integration Center (TRIC) / National Institute of Informatics (NII). Since April. 2014, I am working as an associate professor in Kobe university / TRIC. My research interests are Artificial Intelligence, Multi-Agent System, Cooperative Game and Systems Resilience.
Researcher basic information
■ Research Keyword■ Research Areas
■ Committee History
- 2022 - 2025, International Conference on Smart Computing and Artificial Intelligence (SCAI-Winter), Steering Committee
- 2022 - 2025, International Conference on Smart Computing and Artificial Intelligence (SCAI) Steering Committee
- 2021 - 2025, International Conference on Smart Computing and Artificial Intelligence (SCAI), Senior Program Committee
- 2023 - 2024, Autonomous Agents and Multi-Agent Systems, reviewer
- 2021 - 2024, International Conference on Smart Computing and Artificial Intelligence (SCAI-Winter), Senior Program Committee
- 2023 - 2023, Workshop on Optimization and Learning in MAS (OptLearnMAS), reviewer
- 2021 - 2022, International Conference on Smart Computing and Artificial Intelligence (SCAI), Conference Chair
- 2020 - 2022, Japanese Society for Artificial Intelligence (JSAI), Program Committee
- 2020 - 2021, International Joint Conference on Artificial Intelligence (IJCAI), Program Committee
- 2019 - 2020, International Joint Conference on Autonomous Agents and Multiagent Systems (AAMAS), Program Committee
- 2019 - 2019, Joint Agent Workshop and Symposium (JAWS), Program Committee
- 2019 - 2019, International Joint Workshop on Optimisation in Multi-Agent Systems and Distributed Constraint Reasoning (OPTMAS-DCR), Program Committee
- 2018 - 2018, International Conference on Principles and Practice of Multi‐ Agent Systems (PRIMA), Program Committee
- 2017 - 2018, Artificial Intelligence Journal, Reviewer
- 2016 - 2016, International Conference on Principles and Practice of Multi‐ Agent Systems (PRIMA), Publicity Chair / Program Committee
- 2015 - 2016, International Joint Conference on Artificial Intelligence (IJCAI), Program Committee
- 2014 - 2016, International Joint Conference on Autonomous Agents and Multiagent Systems (AAMAS), Program Committee
- 2014 - 2015, Japanese Society for Artificial Intelligence (JSAI), Program Committee
- 2012 - 2015, Joint Agent Workshop and Symposium (JAWS), Senior Program Committee
- 2014 - 2014, International Joint Workshop on Optimisation in Multi-Agent Systems and Distributed Constraint Reasoning (OPTMAS-DCR), Program Committee
- 2014 - 2014, European Conference on Artificial Intelligence (ECAI), Program Committee
- 2014 - 2014, AAAI Conference on Artificial Intelligence (AAAI), Subreviewer
- 2013 - 2013, International Conference on Tools with Artificial Intelligence (ICTAI2013- SAT-CSP-Track), Program Committee
- 2013 - 2013, International Joint Conference on Artificial Intelligence (IJCAI), Program Committee
Research activity information
■ Award- Mar. 2022 Symposium on Multi Agent Systems for Harmonization Winter Symposium, Incentive award, 深層強化学習による最適な分散衝突回避
- Dec. 2019 20th International Symposium on Advanced Intelligent Systems, Best Paper Award, Identifying Influential Variables in CSP
- Sep. 2019 合同エージェントワークショップ & シンポジウム2019, 最優秀学生奨励賞, MC-netsによる利得分配問題の最小コアを求める複数制約生成法
- Mar. 2019 情報処理学会第81回全国大会, 学生奨励賞, 速度制御を考慮に入れた分散衝突回避アルゴリズムJapan society
- Dec. 2018 第17回科学技術フォーラム (FIT-2018), FIT2018 船井ベストペーパー賞受賞, エージェントのタイプに基づく確率的提携構造形成問題Japan society
- Nov. 2018 The 21st International Conference on Principles and Practice of Multi- Agent Systems (PRIMA-2018), Best Paper Award, Bounded Approximate Algorithm for Probabilistic Coalition Structure GenerationInternational society
- Nov. 2015 The 16th International Symposium on Advanced Intelligent Systems (ISIS 2015), Best Session Paper Award, Skill-Based Dynamic Team Formation ProblemInternational society
- Nov. 2015 The 16th International Symposium on Advanced Intelligent Systems (ISIS 2015), Best Presentation Award, Skill-Based Dynamic Team Formation ProblemInternational society
- Oct. 2014 第13回合同エージェントワークショップ&シンポジウム2014, 優秀論文賞, ロバストなチーム編成問題Japan society
- Oct. 2014 第13回合同エージェントワークショップ&シンポジウム2014, シングルロング発表賞受賞, ロバストなチーム編成問題
- Dec. 2013 The 7th Multi-Disciplinary International Workshop on Artificial Intelligence, Best Presentation Award, AOF-technique based algorithm for Dynamic Multi-Objective Distributed Constraint OptimizationInternational society
- Sep. 2013 第12回合同エージェントワークショップ&シンポジウム2013 (JAWS2013), 優秀論文賞, A Two-phase Complete Algorithm for Multi-objective Distributed Constraint OptimizationJapan society
- May 2013 The 12th International Conference on Autonomous Agents and Multiagent Systems, Challenges and Visions Papers Prize, Systems Resilience: a Challenge Problem for Dynamic Constraint-Based Agent SystemsInternational society
- Oct. 2012 IEEE Computer Society Japan, IEEE Computer Society Japan Chapter JAWS Young Researcher Award, 多目的分散制約最適化問題における厳密/非厳密解法の提案Japan society
- Nov. 2010 The 13th International Conference on Principles and Practice of Multi-Agent Systems, Best Paper Running Up Award, Effect of DisCSP Variable-Ordering Heuristics in Scale-free NetworksInternational society
- Aug. 2010 第7回博士学生交流セミナー, 優秀発表賞受賞, スケールフリーネットワーク上での非同期バックトラッキングの評価Others
- Oct. 2025, Algorithms, 18(671) (671), English[Refereed]Scientific journal
- Sep. 2025, 第24回情報科学技術フォーラム, JapaneseMaritime Security : Optimizing Patrol Strategy Through Deep Reinforcement Learning[Refereed]Research society
- The increasing complexity of maritime traffic imposes growing demands on the safety and rationality of ship-collision-avoidance decisions. While most existing research focuses on simple encounter scenarios, autonomous collision-avoidance strategies that comply with the International Regulations for Preventing Collisions at Sea (COLREGs) in complex multi-ship environments remain insufficiently investigated. To address this gap, this study proposes a novel collision-avoidance framework that integrates a quantitative COLREGs analysis with a distributed stochastic search mechanism. The framework consists of three core components: encounter identification, safety assessment, and stage classification. A cost function is employed to balance safety, COLREGs compliance, and navigational efficiency, incorporating a distance-based weighting factor to modulate the influence of each target vessel. The use of a distributed stochastic search algorithm enables decentralized decision-making through localized information sharing and probabilistic updates. Extensive simulations conducted across a variety of scenarios demonstrate that the proposed method can rapidly generate effective collision-avoidance strategies that fully comply with COLREGs. Comprehensive evaluations in terms of safety, navigational efficiency, COLREGs adherence, and real-time computational performance further validate the method’s strong adaptability and its promising potential for practical application in complex multi-ship environments.MDPI AG, Jul. 2025, Journal of Marine Science and Engineering, 13(8) (8), English[Refereed]Scientific journal
- Corresponding, May 2025, 人工知能学会全国大会 (JSAI 2025), Japanese新人パイロットの教育を考慮したクルー割当問題Research society
- Corresponding, May 2025, 人工知能学会全国大会 (JSAI 2025), Japaneseコンジョイント分析を用いた満足度に基づくクルー割当問題Research society
- Lead, May 2025, 人工知能学会全国大会 (JSAI 2025), Japanese消防隊員の勤務表作成に関する事例研究Research society
- Lead, Dec. 2024, In proceedings of 16th International Conference on Smart Computing and Artificial Intelligence (IIAI-AAI-SCAI-Winter 2024), 217 - 222, EnglishCoalition Structure Generation with Priority Order of Agent Types[Refereed]International conference proceedings
- Sep. 2024, スケジューリングシンポジウム, 90 - 95, Japaneseクルー・ペアリング問題におけるロバスト性に関する一検討Symposium
- Lead, Sep. 2024, オペレーションズ・リサーチ学会 秋季研究発表会, 172 - 173, Japanese海上警備:ロバストな巡視船再配置問Symposium
- Lead, Sep. 2024, 人工知能学会論文誌, 39(5) (5), Japanese動的環境におけるロバストな警備員配置問題[Refereed]Scientific journal
- Corresponding, Mar. 2024, 情報処理学会第86回全国大会, JapaneseRobust Security Guard Scheduling ProblemResearch society
- Lead, Nov. 2023, 人工知能学会論文誌, 38(6) (6), Japanese移動距離最小化とブレーク数最小化に基づくU12バスケットボールリーグ戦作成問題[Refereed]Scientific journal
- Lead, Jul. 2023, In proceedings of 13th International Conference on Smart Computing and Artificial Intelligence (IIAI-AAI-SCAI 2023), 490 - 495, EnglishEffect of influential variable based variable-ordering heuristic in small-world networks[Refereed]International conference proceedings
- Lead, Jun. 2023, In proceedings of International Symposium on Scheduling 2023 (ISS 2023), 15 - 20, EnglishA Framework for Patient Symptoms based Nurse Scheduling Problem[Refereed]International conference proceedings
- Jun. 2023, 人工知能学会全国大会 (JSAI 2023), Japaneseサービス付き提携構造形成に基づくタクシー相乗り問題Research society
- Mar. 2023, 情報処理学会第81回全国大会 (IPSJ 2023), Japanese推定到達時間の局所同期に基づく適応型ルーティングアルゴリズムResearch society
- Institute of Electronics, Information and Communications Engineers (IEICE), Dec. 2022, IEICE Transactions on Information and Systems, E105.D(12) (12), 2085 - 2091Scientific journal
- Sep. 2022, 第21回科学技術フォーラム (FIT-2022), Japanese回収と配達の両方に時間枠を持つMAPDResearch society
- Sep. 2022, 第21回科学技術フォーラム (FIT-2022), Japanese飛行禁止区域を考慮したトラックおよびドローンの併用による配送計画問題Research society
- Sep. 2022, 第21回科学技術フォーラム (FIT-2022), EnglishInfluential Variables in Constraint NetworksResearch society
- Sep. 2022, 第21回科学技術フォーラム (FIT-2022), Japanese深層強化学習による最適な分散衝突回避Research society
- Springer Science and Business Media LLC, Mar. 2021, Autonomous Agents and Multi-Agent Systems, 35(1) (1), English, No password[Refereed]Scientific journal
- Sep. 2020, 第18回科学技術フォーラム (FIT-2020), 1, 59 - 62, Japanese患者の症状を考慮したナース・スケジューリング問題Research society
- Sep. 2020, 第18回科学技術フォーラム (FIT-2020), 4, 183 - 185, Japanese輸送容量ネットワークによる鉄道貨物輸送の頑健性評価-貨物集約時のJR貨物各駅の保管/中継機能に着目して-Research society
- Jun. 2020, 人工知能学会全国大会 (JSAI 2020), JapaneseU12 バスケットボールにおけるブレーク数最小化問題[Refereed]Research society
- Jun. 2020, 人工知能学会全国大会 (JSAI 2020), Japanese分散確率的探索アルゴリズムDSSA+の3次元空間への拡張[Refereed]Research society
- Jun. 2020, 人工知能学会全国大会 (JSAI 2020), Japanese移動回数制限付きマルチエージェント経路発見問題の新しい定式化と解法[Refereed]Research society
- Mar. 2020, 情報処理学会第82回全国大会 (IPSJ 2020), (2) (2), 271 - 272, Japanese提携値の上下界を利用した提携構造形成アルゴリズムResearch society
- Lead, 2020, 電子情報通信学会和文論文誌D, 採録決定, Japaneseエージェントのタイプを用いた特性関数の簡略表記法に基づく制限付き提携構造形成問[Refereed]Scientific journal
- 2020, Autonomous Agents and Multi-Agent Systems, 34(1) (1), EnglishTwo Approximation Algorithms for Probabilistic Coalition Structure Generation with Quality Bound[Refereed]Scientific journal
- Lead, Dec. 2019, The 20th International Symposium on Advanced Intelligent Systems (ISIS 2019), 320 - 325, EnglishIdentifying Influential Variables in CSP[Refereed]Symposium
- Sep. 2019, 第18回科学技術フォーラム (FIT-2019), 2, 69 - 72, Japaneseエージェントのタイプを用いた特性関数の簡略表記法に基づく制限付き提携構造形成問題[Refereed]Symposium
- Sep. 2019, Joint Agent Workshop and Symposium (JAWS-2019), JapaneseMC-netsによる利得分配問題の最小コアを求める複数制約生成法[Refereed]Symposium
- Jul. 2019, International Symposium on Scheduling 2019 (ISS 2019), 162 - 167, EnglishResilient Nurse Scheduling Problem[Refereed]Symposium
- Jun. 2019, 人工知能学会全国大会 (JSAI 2019), JapaneseU12バスケットボールにおけるリーグ戦スケジューリング[Refereed]Research society
- Jun. 2019, The International Journal on Marine Navigation and Safety of Sea Transportation, 13, 117 - 124, EnglishDSSA+: Distributed Collision Avoidance Algorithm in an Environment where Both Course and Speed Changes are Allowed[Refereed]Scientific journal
- Mar. 2019, 情報処理学会第81回全国大会, (2) (2), 495 - 496, Japanese分散最適化アルゴリズムによる自律編成型艦隊制御に関する一考察Research society
- Mar. 2019, 情報処理学会第81回全国大会, (2) (2), 475 - 476, Japanese不確実性を考慮したタイプ付き提携構造形成アルゴリズムResearch society
- Mar. 2019, 情報処理学会第81回全国大会, (2) (2), 493 - 494, Japanese速度制御を考慮に入れた分散衝突回避アルゴリズムResearch society
- Mar. 2019, 情報処理学会第81回全国大会, (1) (1), 329 - 330, Japaneseスポーツ・スケジューリング:ミニバスケットボールにおけるリーグ戦作成問題Research society
- Mar. 2019, 情報処理学会第81回全国大会, (2) (2), 473 - 474, Japaneseエージェントのタイプに基づく制限付き提携構造形成問題Research society
- Mar. 2019, 情報処理学会第81回全国大会, (2) (2), 471 - 472, JapaneseMC-netsにおける利得分配問題の最小コアを求める複数制約生成法Research society
- Mar. 2019, 情報処理学会第81回全国大会, (1) (1), 327 - 328, Japanese0-1整数計画法によるレジリエントなナース・スケジューリングResearch society
- 2019, 電子情報通信学会和文論文誌D, J103-D(2) (2), 42 - 51, Japaneseエージェントのタイプを用いた特性関数の簡略表記法に基づく確率的提携構造形成問題[Refereed]Scientific journal
- Springer, 2019, Annals OR, 275(1) (1), 3 - 37, English[Refereed]Scientific journal
- Oct. 2018, The 21st International Conference on Principles and Practice of Multi-Agent Systems (PRIMA 2018), 140 - 157, EnglishRobust Coalition Structure Generation[Refereed]International conference proceedings
- Oct. 2018, The 16th International Conference on Principles of Knowledge Representation and Reasoning (KR 2018), 663 - 664, EnglishProbabilistic Coalition Structure Generation[Refereed]International conference proceedings
- Oct. 2018, The 21st International Conference on Principles and Practice of Multi-Agent Systems (PRIMA 2018), 123 - 139, EnglishBounded Approximate Algorithm for Probabilistic Coalition Structure Generation[Refereed]International conference proceedings
- Sep. 2018, 第 17 回科学技術フォーラム (FIT-2018), 37 - 40, Japaneseレジリエントなナース・スケジューリング問題[Refereed]Research society
- Sep. 2018, 第 17 回科学技術フォーラム (FIT-2018), 25 - 30, Japaneseエージェントのタイプに基づく確率的提携構造形成問題[Refereed]Research society
- Jul. 2018, The 17th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2018), 1362 - 1370, EnglishRecoverable Team Formation: Building Teams Resilient to Change[Refereed]International conference proceedings
- Jul. 2018, The 17th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2018), 1903 - 1905, EnglishMulti-Objective Distributed Pseudo-Tree Optimization[Refereed]International conference proceedings
- Jun. 2018, 人工知能学会全国大会 (JSAI 2018), Japanese分散確率的探索アルゴリズムを用いた船舶衝突回避における非協力船舶の影響Research society
- Jun. 2018, 人工知能学会全国大会 (JSAI 2018), Japanese確率的な提携構造形成問題における精度保証付き近似解法の提案Research society
- Jun. 2018, The 15th International Conference on the Integration of Constraint Programming, Artificial Intelligence, and Operations Research (CPAIOR 2018) (Extended Abstract Track), EnglishRecoverable Team Formation: Building Teams Resilient to Change[Refereed]International conference proceedings
- Mar. 2018, 情報処理学会第80回全国大会 (IPSJ 2018), 2, 343 - 344, Japanese列生成法と LP ラウンディングによる提携構造形成アルゴリズムResearch society
- Mar. 2018, 情報処理学会第80回全国大会 (IPSJ 2018), 2, 351 - 352, Japanese時間拡張グラフ上のナンバーリンクパズルとしてのマルチエージェント経 路発見Research society
- Mar. 2018, 情報処理学会第80回全国大会 (IPSJ 2018), 1, 335 - 336, Japanese公平性を考慮した麻酔科医スケジューリング問題に関する一検討Research society
- Mar. 2018, 情報処理学会第80回全国大会 (IPSJ 2018), 2, 375 - 376, Japanese共同研究チーム編成ツールの開発Research society
- Mar. 2018, 情報処理学会第80回全国大会 (IPSJ 2018), 2, 345 - 346, Japanese確率的な提携構造形成問題の解法Research society
- IOS Press, 2018, Fundamenta Informaticae, 158(1-3) (1-3), 63 - 91, English[Refereed]Scientific journal
- Dec. 2017, IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, E100D(12) (12), 2897 - 2905, English[Refereed]Scientific journal
- Sep. 2017, 第16回情報科学技術フォーラム(FIT-2017), 2, 65 - 70, Japanese確率的な提携構造形成フレームワークの提案[Refereed]Research society
- Jul. 2017, JOURNAL OF NAVIGATION, 70(4) (4), 699 - 718, English[Refereed]Scientific journal
- May 2017, 人工知能学会全国大会 (JSAI 2017), Japanese不確実性を考慮した提携構造形成問題に関する一検討Research society
- May 2017, 人工知能学会全国大会 (JSAI 2017), EnglishEvaluating Dynamic DCOP Algorithms through Simulation of Mobile Sensor TeamsResearch society
- May 2017, 人工知能学会全国大会 (JSAI 2017), EnglishBuilding Teams Resilient to ChangeResearch society
- Mar. 2017, 情報処理学会第79回全国大会 (IPSJ 2017), (2) (2), 623 - 624, Japanese制約充足問題におけるインフルエンシャル変数の特定Research society
- Mar. 2017, 情報処理学会第79回全国大会 (IPSJ 2017), 2, 355 - 356, Japanese乗合バス路線に基づく災害ロードマップ作成Research society
- Mar. 2017, 情報処理学会第79回全国大会 (IPSJ 2017), 2, 45 - 46, JapaneseMC-netsに基づく大規模提携形ゲームのための上界保証付きイプシロンコアResearch society
- Mar. 2017, 情報処理学会第79回全国大会 (IPSJ 2017), 2, 357 - 358, JapaneseDMAT編成問題Research society
- Mar. 2017, International Conference on Business, Economics and Information Technology (ICBEIT-17), EnglishA research on the feasibility of Intelligent Disaster Logistics (IDL) support system using local bus vehicle[Refereed]International conference proceedings
- 2017, Joint Agent Workshop and Symposium (JAWS 2017), 146 - 151, JapaneseMC-nets における利得分配:上界保証付き ε-コアを求めるアルゴリズム[Refereed]Symposium
- Springer Verlag, 2017, Studies in Computational Intelligence, 670(1) (1), 139 - 152, English[Refereed]In book
- 2017, The 14th International Conference on Logic Programming and Non-monotonic Reasoning (LPNMR-17), 265 - 278, English[Refereed]International conference proceedings
- Sep. 2016, 第15回情報科学技術フォーラム (FIT-2016), 2, 355 - 356, Japanese乗合バス路線を活用した災害時の知的ロジスティクス支援システムの構築Research society
- Aug. 2016, The 11th International Conference on the Practice and Theory of Automated Timetabling (PATAT 2016), 63 - 79, English\sum_x-Optimal Solutions in Highly Symmetric Multi-Objective Timetabling Problems[Refereed]International conference proceedings
- Jul. 2016, The 25th International Joint Conference on Artificial Intelligence (IJCAI 2016), 454 - 460, EnglishMission Oriented Robust Multi-Team Formation and its Application to Robot Rescue Simulation[Refereed]International conference proceedings
- Jun. 2016, 第30回人工知能学会全国大会 (JSAI 2016), Japanese分散制約充足問題:大域的な決定に影響を及ぼすエージェントの特定に関する一検討Research society
- Jun. 2016, 第30回人工知能学会全国大会 (JSAI 2016), EnglishLimiting Perturbations in Dynamic DCOPResearch society
- Jun. 2016, 第30回人工知能学会全国大会 (JSAI 2016), EnglishDistributed Stochastic Search Algorithm for n-Ship Collision AvoidanceResearch society
- Apr. 2016, The 15th International Conference on Principles of Knowledge Representation and Reasoning (KR 2016), 601 - 604, EnglishRepresentative Solutions for Multi-Objective Constraint Optimization Problems[Refereed]International conference proceedings
- Mar. 2016, 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 (PPL 2016), カテゴリC1, Japanese解集合プログラミングを用いた制約組合せテストケース生成[Refereed]Symposium
- Japanese Society for Artificial Intelligence, Feb. 2016, Transactions of the Japanese Society for Artificial Intelligence, 31(2) (2), Japanese[Refereed]Scientific journal
- Feb. 2016, 人工知能学会論文誌, 31(2) (2), pp.C - F75_1-10, Japanese分散ラグランジュ緩和プロトコルにおけるバンドル法[Refereed]Scientific journal
- 2016, J. Reliable Intelligent Environments, 2(1) (1), 17 - 35, English[Refereed]Scientific journal
- Nov. 2015, The 16th International Symposium on Advanced Intelligent Systems (ISIS 2015), 781 - 793, EnglishSkill-Based Dynamic Team Formation Problem[Refereed]Symposium
- Nov. 2015, The 16th International Symposium on Advanced Intelligent Systems (ISIS 2015), 1100 - 1112, EnglishDistributed Stochastic Search Algorithm for n-Ship Collision Avoidance[Refereed]Symposium
- Oct. 2015, 合同エージェントワークショップ&シンポジウム (JAWS 2015), 16 - 17, Japanese増床計画付き患者搬送問題の定式化とヒューリスティック解法の提案Symposium
- Oct. 2015, 合同エージェントワークショップ&シンポジウム (JAWS 2015), 200 - 203, Japanese災害派遣医療チームのためのダイナミック・スケジューリング[Refereed]Symposium
- Oct. 2015, Joint Agent Workshop and Symposium (JAWS 2015), 122 - 127, English\Sigma-Optimal Solutions in Multi-Objective Timetabling[Refereed]Symposium
- Jul. 2015, International Symposium on Scheduling 2015 (ISS-15), 109 - 114, EnglishFavorable Solution in Multi-Objective Nurse Rerostering Problem[Refereed]Symposium
- Jun. 2015, The Journal of the Institute of Electronics, Information and Communication Engineers, J98-D(6) (6), 884 - 893, JapaneseResilient Solutions for Dynamic Multi-Objective Constraint Optimization[Refereed]Scientific journal
- Jun. 2015, The Journal of the Institute of Electronics, Information and Communication Engineers, J98-D(6) (6), 894 - 904, JapaneseTask-Oriented Robust Team Formation Problem[Refereed]Scientific journal
- Jun. 2015, The International Journal on Marine Navigation and Safety of Sea Transportation, 9(1) (1), 23 - 29, EnglishShip Collision Avoidance by Distributed Tabu Search[Refereed]Scientific journal
- Jun. 2015, 第29回人工知能学会全国大会 (JSAI-2015), EnglishRepresentative Solutions for Multi-Objective Constraint Optimization ProblemsResearch society
- 人工知能学会, Jun. 2015, 第29回人工知能学会全国大会 (JSAI-2015), 29, 1 - 4, EnglishEgalitarianism in Multi-Objective Nurse Rerostering ProblemResearch society
- May 2015, 第29回人工知能学会全国大会 (JSAI-2015), EnglishShip Collision Avoidance by Distributed Tabu SearchResearch society
- 人工知能学会, May 2015, 第29回人工知能学会全国大会 (JSAI-2015), 29, 1 - 4, JapaneseMax-SATに対する非厳密解法を用いたラグランジュ分解・調整法Research society
- May 2015, The 14th International Conference on Autonomous Agents and Multiagent Systems (AAMAS-2015), 395 - 403, EnglishHow to Form a Task-Oriented Robust Team[Refereed]International conference proceedings
- 人工知能学会, Mar. 2015, TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol.9(No.1) (No.1), 23 - 29, EnglishShip Collision Avoidance by Distributed Tabu Search[Refereed]Scientific journal
- 人工知能学会, 2015, International Joint Agent Workshop and Symposium (IJAWS 2015), 29, 1 - 4, EnglishMulti-Objective Nurse Rerostering Problem[Refereed]Symposium
- 2015, AAAI-15 Workshop on Planning, Search, and Optimization (PlanSOpt-15), 47 - 54, EnglishEffect of Bundle Method in Distributed Lagrangian Relaxation Protocol[Refereed]Symposium
- Jan. 2015, The 7th International Conference on Agents and Artificial Intelligence (ICAART-2015), 509 - 516, JapaneseFinding Resilient Solution for Dynamic Multi-Objective Constraint Optimization Problems[Refereed]International conference proceedings
- 2015, PRIMA 2015: PRINCIPLES AND PRACTICE OF MULTI-AGENT SYSTEMS, 9387, 134 - 151, English[Refereed]International conference proceedings
- Oct. 2014, 合同エージェントワークショップ&シンポジウム (JAWS-2014), 245 - 248, Japanese分散ラグランジュ緩和プロトコルにおけるバンドル法の効果[Refereed]Symposium
- Oct. 2014, 合同エージェントワークショップ&シンポジウム (JAWS-2014), 83 - 86, Japanese動的な多目的制約最適化問題におけるレジリエントな解[Refereed]Symposium
- Oct. 2014, 合同エージェントワークショップ&シンポジウム (JAWS-2014), 341 - 344, Japaneseロバストなチーム編成問題[Refereed]Symposium
- Oct. 2014, Joint Agent Workshop and Symposium (JAWS-2014), 209 - 212, EnglishRobust Multi-Team Formation and its Application to Robot Rescue Simulation[Refereed]Symposium
- Oct. 2014, Joint Agent Workshop and Symposium (JAWS-2014), 237 - 240, EnglishLimiting Perturbations in Dynamic MO-DCOP[Refereed]Symposium
- Oct. 2014, Joint Agent Workshop and Symposium (JAWS 2014), 241 - 244, EnglishDistributed Iterated Pareto Local Search for MO-DCOPs[Refereed]Symposium
- Jun. 2014, 第28回人工知能学会全国大会 (JSAI 2014), Japaneseロバストな提携構造形成問題に関する一検討Research society
- May 2014, International Joint Workshop On Optimisation In Multi-Agent Systems And Distributed Constraint Reasoning (OPTMAS-DCR) (held in conjunction with AAMAS 2014), 15 pages, EnglishModel and Algorithm for Dynamic Multi-Objective Distributed Optimization[Refereed]Symposium
- May 2014, The 13th International Conference on Autonomous Agents and Multiagent Systems (AAMAS-2014), 1427 - 1428, EnglishLp-norm Based Algorithm for Multi-Objective Distributed Constraint Optimization[Refereed]International conference proceedings
- May 2014, The International Joint Workshop On Optimisation In Multi-Agent Systems And Distributed Constraint Reasoning (OPTMAS-DCR-2014). In conjunction with AAMAS-2014, 15 pages, EnglishDiscriminative MO-COP Operators[Refereed]Symposium
- Mar. 2014, The 6th International Conference on Agents and Artificial Intelligence (ICAART-2014), 420 - 427, EnglishModeling and Algorithm for Dynamic Multi-Objective Weighted Constraint Satisfaction Problem[Refereed]International conference proceedings
- Fuji Technology Press, 2014, Journal of Advanced Computational Intelligence and Intelligent Informatics, 18(4) (4), 573 - 580, English[Refereed]Scientific journal
- 2014, 2014 IEEE 26TH INTERNATIONAL CONFERENCE ON TOOLS WITH ARTIFICIAL INTELLIGENCE (ICTAI), 2014-December, 170 - 177, English[Refereed]International conference proceedings
- 2014, The 17th International Conference on Principles and Practice of Multi-Agent Systems (PRIMA 2014), 8861, 390 - 406, EnglishLocal Search Based Approximate Algorithm for Multi-Objective DCOPs[Refereed]International conference proceedings
- 分散制約最適化問題: 擬似木に基づくハイブリッド型の解法の提案分散制約最適化問題はマルチエージェントシステムにおける協調問題解決の基本的な枠組みである.この問題では,擬似木に基づく探索型の厳密解法の開発が重要である.これらの解法におけるメモリ使用量は,変数の数に対して多項式のオーダで抑えられるが,最適解を求めるのに多くの時間を要するという問題点がある.そのため,分散制約最適化問題では,どのようにして,擬似木に基づく探索型の厳密解法の実行時間を短縮するかが重要な課題となっている.本論文では,探索型の代表的な厳密解法と近似解法を組合せたハイブリッド型の解法を提案する.実験では,本解法が既存の探索型の厳密解法と比べ,より高速に求解可能であることを示す.更に,擬似木に基づく近似解法と擬似木に基づく探索型の厳密解法は相性が良いことを実験により検証する.The Institute of Electronics, Information and Communication Engineers, Dec. 2013, 電子情報通信学会論文誌, J96-D(12) (12), 2920 - 2928, Japanese[Refereed]Scientific journal
- 多目的分散制約最適化問題における厳密/非厳密解法の提案実世界に存在する様々な最適化問題では,異なる評価基準を同時に考慮する場合が存在する.多目的分散制約最適化問題(MO-DCOP)は,異なる評価基準をもつ複数の目的関数が存在する分散制約最適化問題(DCOP)である.DCOPとは,制約最適化問題における変数及び制約が複数のエージェントに分散された問題である.本論文では,MO-DCOPにおける最初の厳密解法を提案する.本解法の特徴を以下に示す.本解法では,(i)パレート解を求める古典的なL_pノルム法,(ii)DCOPの解法で広く用いられている擬似木,(iii)動的計画法を用いる.また(iv)本解法の計算量は制約グラフの誘導幅の指数オーダーとなる.本解法では,マンハッタンノルムを用いた場合はパレート解を保証するが,ユークリッド/チェビシェフノルムを用いた場合はパレート解を保証しないことを示す.更に,MO-DCOPにおける非厳密解法を提案する.本解法は最適化問題における近似解の評価基準であるp-最適性に基づく解法であり,誤差の上界を事前に与えることができる最初の非厳密解法である.The Institute of Electronics, Information and Communication Engineers, Dec. 2013, 電子情報通信学会論文誌, J96-D(12) (12), 2929 - 2938, Japanese[Refereed]Scientific journal
- エージェント間に外部性が存在する場合の戦略的操作不可能な割当 てメカニズムの提案本論文では,エージェント間に外部性が存在する場合を対象に戦略的操作不可能な割当てメカニズムの提案を行う.検索連動広告オークションなど,エージェントらが他のエージェントに対して選好,すなわち,誰と一緒に勝者になるかによって異なる評価値をもつことが考えられる.そこで,本論文ではエージェント間の関係について,エージェントをノード,外部性を枝で表現する重み付き有向グラフ(ソーシャルネットワーク)で表現する.メカニズムを設計する上で,メカニズムが満たすべき性質が幾つか存在するが,我々は不可能性定理として,任意の評価値を表明可能な場合,どのようなメカニズムをもってしても,戦略的操作不可能性,個人合理性,パレート効率性,非損失性の四つの望ましい性質を同時に満足するメカニズムが存在しないことを示す.そこで,表明可能な評価値を限定させることで,既存のVickrey-Clarke-Groves(VCG)メカニズムが適用可能な領域が存在することを示し,その制約条件を緩和したメカニズムを提案する.更に,VCGメカニズムを改良したVCG+メカニズムの提案を行う.最後に,計算機実験によってVCGメカニズム,VCG+メカニズムの性能の評価を行う.The Institute of Electronics, Information and Communication Engineers, Dec. 2013, 電子情報通信学会論文誌, J96-D(12) (12), 2960 - 2969, Japanese[Refereed]Scientific journal
- AAAI, Nov. 2013, AAAI Conference on Human Computation and Crowdsourcing (HCOMP-2013), 147–155, EnglishAbility grouping of crowd workers via reward discrimination[Refereed]International conference proceedings
- Sep. 2013, 第12回情報科学技術フォーラム (FIT2013), (4) (4), 477 - 484, Japaneseサイバーセキュリティ問題の分散型多元制約最適化によるモデル化と解法Research society
- Aug. 2013, The 14th International Workshop on Distributed Constraint Reasoning (DCR-2013). In conjunction with IJCAI-2013., 15 pages, EnglishPseudo-Tree Based Hybrid Algorithm for Distributed Constraint Optimization[Refereed]Symposium
- Jun. 2013, 第27回人工知能学会全国大会 (JSAI 2013), Japanese動的な多目的分散制約最適化問題に関する一検討Research society
- 人工知能学会, Jun. 2013, 第27回人工知能学会全国大会 (JSAI 2013), 27, 1 - 3, JapaneseA dynamic method for determining the optimal number of workers in crowdsourcingResearch society
- 人工知能学会, Jun. 2013, 第27回人工知能学会全国大会 (JSAI 2013), 27, 1 - 3, JapaneseA Pricing mechanism for task quality-control in crowdsourcingResearch society
- IFAAMAS, May 2013, The 12th International Conference on Autonomous Agents and Multiagent Systems (AAMAS-2013), 1347 - 1348, EnglishQuality-Control Mechanism utilizing Worker's Confidence for Crowdsourced Tasks[Refereed]International conference proceedings
- Apr. 2013, The 2013 Open Peer-Reviewed Workshop on Decentralized Coordination (DC-2013), 54 - 60, EnglishPseudo-Tree Based Hybrid Algorithm for Distributed Constraint Optimization[Refereed]Symposium
- Mar. 2013, 情報処理学会第75回全国大会 (IPSJ 2013), 2, 7 - 8, Japanese動的制約に基づくレジリエントなシステムの設計に関する一検討Research society
- 2013, Transactions of the Japanese Society for Artificial Intelligence, 28(1) (1), 57 - 66, Japanese[Refereed]Scientific journal
- IFAAMAS, 2013, The 12th International Conference on Autonomous Agents and Multiagent Systems (AAMAS-2013), 785 - 788, EnglishSystems resilience: a challenge problem for dynamic constraint-based agent systems.[Refereed]International conference proceedings
- IEEE Computer Society, 2013, The 1st Workshop on Systems Resilience (WSR-2013) (held in conjunction with DSN 2013), 1 - 7, English[Refereed]International conference proceedings
- 2013, Transactions of the Japanese Society for Artificial Intelligence, 28(1) (1), 57 - 66, Japanese[Refereed]Scientific journal
- 2013, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 8291, 292 - 307, English[Refereed]International conference proceedings
- 2013, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 8291, 413 - 420, English[Refereed]International conference proceedings
- 2013, MULTI-DISCIPLINARY TRENDS IN ARTIFICIAL INTELLIGENCE, 8271, 175 - 186, English[Refereed]International conference proceedings
- Oct. 2012, 合同エージェントワークショップ&シンンポジウム (JAWS 2012), Japanese多目的分散制約最適化問題における厳密/非厳密解法の提案[Refereed]Symposium
- Oct. 2012, 合同エージェントワークショップ&シンポジウム (JAWS-2012), Japaneseクラウドソーシングにおける品質コントロールの一考察[Refereed]Symposium
- Oct. 2012, 合同エージェントワークショップ&シンンポジウム (JAWS 2012), EnglishFormalizing the resiliency of dynamic open systems[Refereed]Symposium
- Oct. 2012, 合同エージェントワークショップ&シンポジウム (JAWS-2012), JapaneseBnB-ADOPT-p:分散制約最適化問題におけるハイブリッド型の解法の提案[Refereed]Symposium
- Sep. 2012, 第11回情報科学技術フォーラム (FIT-2012), 1, 23 - 30, Japanese多目的制約最適化問題:ユーザとの対話型解法の提案[Refereed]Research society
- Mar. 2012, 九州大学大学院, Japaneseグラフ構造に基づく分散制約充足/最適化問題の解法[Refereed]Doctoral thesis
- 2012, グリーンコンピューティング研究所連続セミナー(5), Japaneseグラフ構造に基づく分散制約充足/最適化問題の解法Research society
- 2012, Multiagent and Grid Systems, 8(2) (2), 127 - 141, English[Refereed]International conference proceedings
- 2012, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 7514, 561 - 576, English[Refereed]International conference proceedings
- Dec. 2011, 情報処理学会論文誌, 52(12), 3786 - 3795, Japanese擬似木に基づく分散制約最適化問題の精度保証付き非厳密解法の提案[Refereed]Scientific journal
- 分散制約充足問題:特定の制約網に特化した変数順序付けヒューリスティックの提案分散制約充足問題とは,制約充足問題における変数および制約が複数のエージェントに分散された問題である.既存の分散制約充足アルゴリズムのほとんどは,任意の制約網で動作することを保証している.しかし,特定の制約網,たとえば,ハブを含むようなスケールフリー的な制約網を対象とする場合,対象とする制約網に特化したアルゴリズム/ヒューリスティックが有効となることが予想される.我々の研究は,特定の制約網に特化したアルゴリズムの開発を目的とする.本論文では,その第1歩として,スケールフリー的な制約網に特化した静的な変数順序付けヒューリスティックを提案し,その有効性を示す.実験では,非同期バックトラッキングを用い,エージェントの優先順位の決定法が,スケールフリー的な制約網ではランダム構造の制約網より,アルゴリズムの性能に大きな影響を与えることを示す.さらに,エージェントの優先順位を提案手法と次数順に基づくヒューリスティックによって決定した,非同期バックトラッキングの性能を比較し,提案手法では最大29%の性能向上が得られることを示した.A Distributed Constraint Satisfaction Problem (DisCSP) is a constraint satisfaction problem in which variables and constraints are distributed among multiple agents. Various algorithms for solving DisCSPs have been developed, which are intended for general purposes, i.e., they can be applied to any network structure. However, if a network has some particular structure, e.g., the network structure is scale-free, we can expect that some specialized algorithms or heuristics, which are tuned for the network structure, can outperform general purpose algorithms/heuristics. In this paper, as an initial step toward developing specialized algorithms for particular network structures, we examine variable-ordering heuristics in scale-free networks. We use the classic asynchronous backtracking algorithm as a baseline algorithm and examine the effect of variable-ordering heuristics. First, we show that the choice of variable-ordering heuristics is more influential in scale-free networks than in random networks. Furthermore, we develop a novel variable-ordering heuristic that is specialized to scale-free networks. Experimental results illustrate that our new variable-ordering heuristic is more effective than a standard degree-based variable-ordering heuristic. Our proposed heuristic reduces the required cycles by 29% at the critical point.情報処理学会, Nov. 2011, 情報処理学会論文誌, 52(11)(11) (11), 3018 - 3029, Japanese[Refereed]Scientific journal
- 人工知能学会, Jun. 2011, 第25回人工知能学会全国大会 (JSAI-2011), 25, 1 - 4, Japanese擬似木に基づく分散制約最適化問題の精度保証付き非厳密解法の提案Research society
- Springer, May 2011, The 4th International Workshop on Optimisation in Multi-agent Systems (OPTMAS-2011) (held in conjunction with AAMAS-2011), 52 - 67, English[Refereed]Symposium
- IFAAMAS, May 2011, The 10th International Conference on Autonomous Agents and Multiagent Systems (AAMAS-2011), 1269 - 1270, EnglishPseudo-tree-based Algorithm for Approximate Distributed Constraint optimization with Quality Bounds[Refereed]International conference proceedings
- 2011, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 6876, 660 - 674, English[Refereed]International conference proceedings
- Nov. 2010, The 13th International Conference on Principles and Practice of Multi-Agent Systems (PRIMA-2010), 168 - 180, EnglishEffect of DisCSP Variable-Ordering Heuristics in Scale-free Networks[Refereed]International conference proceedings
- Oct. 2010, 合同エージェントワークショップ&シンンポジウム (JAWS 2010), Japanese誘導幅に基づく分散制約最適化問題の精度保 証付き近似解法の提案[Refereed]Symposium
- Jun. 2010, 第24回人工知能学会全国大会 (JSAI 2010), Japaneseスケールフリーネットワーク上での非同期バックトラッキングの評価Research society
- 人工知能学会, May 2010, The 12th International Workshop on Distributed Constraint Reasoning (DCR-2010) (held in conjunction with AAMAS-2010), 24, 127 - 139, EnglishEffect of DisCSP Variable-Ordering Heuristics in Scale-free Networks[Refereed]Symposium
- Oct. 2009, 合同エージェントワークショップ&シンンポジウム (JAWS 2009), Japaneseスケールフリーネットワーク上での非同期バッ クトラッキングの評価[Refereed]Symposium
- Dec. 2008, Department of Computer Science Albert-Ludwigs-University at Freiburg, GermanGeneral Game Playing using Automatically Generated Evaluation Functions[Refereed]Master thesis
- Dec. 2007, Department of Computer Science Albert-Ludwigs-University at Freiburg, GermanEndgame Databases in verification games[Refereed]Others
- 人工知能学会, 2015, 人工知能学会全国大会論文集, 29, 1 - 4, EnglishRepresentativity versus Diversity : Focusing on Specific Solutions in Multi-Objective Contraint Optimization Problems
- Sep. 2013, Forum on Information Technology 2013 (FIT 2013), N-016, Information and Systems SocietyModeling and Algorithm for Cyber Security Problem Based on Decentralised Multi-Dimensional Constraint Optimization
■ Lectures, oral presentations, etc.
- The 21st International Conference on Principles and Practice of Multi-Agent Systems (PRIMA 2018), Oct. 2018, English, International conferenceRobust Coalition Structure GenerationOral presentation
- 第17回科学技術フォーラム (FIT-2018), Sep. 2018, Japanese, Domestic conferenceレジリエントなナース・スケジューリング問題Oral presentation
- 第17回科学技術フォーラム (FIT-2018), Sep. 2018, Japanese, Domestic conferenceエージェントのタイプに基づく確率的提携構造形成問題Oral presentation
- 第16回情報科学技術フォーラム(FIT-2017), Sep. 2017, Japanese, Domestic conference確率的な提携構造形成フレームワークの提案Oral presentation
- 人工知能学会全国大会 (JSAI 2017), May 2017, Japanese, Domestic conference不確実性を考慮した提携構造形成問題に関する一検討Oral presentation
- 第15回情報科学技術フォーラム (FIT-2016), Sep. 2016, Japanese, Domestic conference乗合バス路線を活用した災害時の知的ロジスティクス支援システムの構築Oral presentation
- The 25th International Joint Conference on Artificial Intelligence (IJCAI-16), Jul. 2016, English, International conferenceMission Oriented Robust Multi-Team Formation and its Application to Robot Rescue SimulationOral presentation
- The 16th International Symposium on Advanced Intelligent Systems (ISIS 2015), Nov. 2015, English, Mokpo/Korea, International conferenceSkill-Based Dynamic Team Formation Problem[Invited]Oral presentation
- The 16th International Symposium on Advanced Intelligent Systems (ISIS-2015), Nov. 2015, English, Mokpo, Korea, International conferenceSkill-Based Dynamic Team Formation ProblemOral presentation
- Joint Agent Workshop and Symposium (JAWS 2015), Oct. 2015, Japanese, 加賀, Domestic conference災害派遣医療チームのためのダイナミック・スケジューリングPoster presentation
- International Symposium on Scheduling (ISS-2015), Jul. 2015, English, Kobe, Japan, International conferenceFavorable Solution in Multi-Objective Nurse Rerostering ProblemOral presentation
- International Symposium on Scheduling 2015 (ISS 2015), Jul. 2015, English, International conferenceFavorable Solution in Multi-Objective Nurse Rerostering ProblemOral presentation
- The 14th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2015), May 2015, English, International conferenceHow to Form a Task-Oriented Robust TeamOral presentation
- The 17th International Conference on Principles and Practice of Multi-Agent Systems (PRIMA-2014), Dec. 2014, English, Gold Coast/Australia, International conferenceLocal Search Based Approximate Algorithm for Multi-Objective DCOPOral presentation
- Joint Agent Workshop and Symposium (JAWS-2014), Oct. 2014, Japanese, 宮崎, Domestic conference動的な多目的制約最適化問題におけるレジリエントな解Oral presentation
- Joint Agent Workshop and Symposium (JAWS-2014), Oct. 2014, Japanese, 宮崎, Domestic conferenceロバストなチーム編成問題Oral presentation
- 第28回人工知能学会全国大会 (JSAI-2014), May 2014, Japanese, 愛媛, Domestic conferenceロバストな提携構造形成問題に関する一検討Oral presentation
- 合同エージェントワークショップ&シンポジウム (JAWS-2013), Oct. 2013, English, 南紀白浜, Domestic conferenceA Two-phase Complete Algorithm for Multi-objective Distributed Constraint Optimization.Oral presentation
- 第12回情報科学技術フォーラム (FIT-2013), Sep. 2013, Japanese, 鳥取, Domestic conferenceサイバーセキュリティ問題の分散型多元制約最適化によるモデル化と解法Oral presentation
- The 14th International Workshop on Distributed Constraint Reasoning (DCR-2013) (held in conjunction with IJCAI 2013), Aug. 2013, English, Beijing/China, International conferencePseudo-Tree Based Hybrid Algorithm for Distributed Constraint Optimization.Oral presentation
- The 7th Multi-Disciplinary International Workshop on Artificial Intelligence (MIWAI-2013), Jul. 2013, English, Krabi/Thailand, International conferenceAOF-technique based algorithm for Dynamic Multi-Objective Distributed Constraint OptimizationOral presentation
- 第27回人工知能学会全国大会 (JSAI-2013), May 2013, Japanese, 富山, Domestic conference動的な多目的分散制約最適化問題に関する一検討Oral presentation
- 情報処理学会第75回全国大会 (IPSJ-2013), Mar. 2013, Japanese, 仙台), Domestic conference動的制約に基づくレジリエントなシステムの設計に関する一検討Oral presentation
- 合同エージェントワークショップ&シンポジウム (JAWS-2012), Oct. 2012, Japanese, 掛川, Domestic conference多目的分散制約最適化問題における厳密/非厳密解法の提案Oral presentation
- The 18th International Conference on Principles and Practice of Constraint Programming (CP-2012), Oct. 2012, English, Quebec City/Canada, International conferenceInteractive Algorithm for Multi-objective Constraint OptimizationOral presentation
- 合同エージェントワークショップ&シンポジウム (JAWS-2012), Oct. 2012, Japanese, 掛川, Domestic conferenceBnB-ADOPT-p:分散制約最適化問題におけるハイブリッド型の解法の提案Oral presentation
- 第11回情報科学技術フォーラム (FIT-2012), Sep. 2012, Japanese, 東京, Domestic conference多目的制約最適化問題:ユーザとの対話型解法の提案Oral presentation
- グリーンコンピューティング研究所連続セミナー(5), Jan. 2012, Japanese, 名古屋, Domestic conferenceグラフ構造に基づく分散制約充足/最適化問題の解法Oral presentation
- The 17th International Conference on Principles and Practice of Constraint Programming (CP-2011), Sep. 2011, English, Perugia/Italy, International conferencePseudo-tree-based Incomplete Algorithm for Distributed Constraint Optimization with Quality Bounds.Oral presentation
- 第25回人工知能学会全国大会 (JSAI-2011), Jun. 2011, Japanese, 盛岡, Domestic conference誘導幅に基づく分散制約最適化問題の精度保証付き非厳密解法の提案Oral presentation
- The 10th International Conference on Autonomous Agents and Multiagent Systems (AAMAS-2011), May 2011, English, Taipei/Taiwan, International conferencePseudo-tree-based Algorithm for Approximate Distributed Constraint optimization with Quality Bounds.Oral presentation
- In proceedings of the 4th International Workshop on Optimisation in Multi-agent Systems (OPTMAS 2011) (held in conjunction with AAMAS 2011), 2011, English, Taipei/Taiwan, International conferencePseudo-tree-based Incomplete Algorithm for Distributed Constraint Optimization with Quality Bounds.Invited oral presentation
- The 4th International Workshop on Optimisation in Multi-agent Systems (OPTMAS 2011) (held in conjunction with AAMAS 2011), 2011, English, Taipei/Taiwan, International conferencePseudo-tree-based Incomplete Algorithm for Distributed Constraint Optimization with Quality Bounds.Invited oral presentation
- The 13th International Conference on Principles and Practice of Multi-Agent Systems (PRIMA-2010), Nov. 2010, English, Kolkata/India, International conferenceEffect of DisCSP Variable-Ordering Heuristics in Scale-free Networks.Oral presentation
- 合同エージェントワークショップ&シンポジウム (JAWS-2010), Oct. 2010, Japanese, 富良野, Domestic conference誘導幅に基づく分散制約最適化問題の精度保証付き近似解法の提案Oral presentation
- The 12th International Workshop on Distributed Constraint Reasoning (DCR-2010) (held in conjunction with AAMAS 2010), May 2010, English, Toronto/Canada, International conferenceEffect of DisCSP Variable-Ordering Heuristics in Scale-free Networks.Oral presentation
- 合同エージェントワークショップ&シンポジウム (JAWS-2009), Oct. 2009, Japanese, 仙台, Domestic conferenceスケールフリーネットワーク上での非同期バックトラッキングの評価Oral presentation
■ Research Themes
- 日本学術振興会, 科学研究費助成事業, 基盤研究(B), 神戸大学, 01 Apr. 2022 - 31 Mar. 2025全体最適と個人最適を両立させる分散協調問題解決(1) 分散船舶衝突回避アルゴリズムDSSQの各エージェントのコスト関数における針路変更および速度変更の項の重みを調整するパラメータαの設定値(学習アルゴリズムの行動空間に相当)を2通り、3通り、5通り用意した場合の評価実験を行った。その結果、行動空間のサイズが大きくなるにつれ、学習後のエージェントが目標地点に到達するまでの平均所要時間に有意な差は見られなかったが、エージェント間の所要時間の分散については大きく減少することが分かった。当該結果を追記した論文を新たに作成し、可能な限り最終年度である2024年度中に公表したいと考えている。 (2) これまでに開発してきた分散船舶衝突回避アルゴリズムDSSA、DSSA+と最新アルゴリズムであるDSSQの概要を紹介する招待講演を2件行った。1件は国際会議9th International Conference on Advanced Intelligent Maritime Safety and Technologyにおける基調講演、もう1件は2023年度人工知能学会全国大会(第37回)OS-9「AIと制約プログラミング」における招待講演である。 (3) 船舶運航において、各船舶の行動を示すAISデータから異常行動を検知するためのクラスタリングアルゴリズムおよび深層学習アルゴリズムに関する研究を指導学生とともに行い、論文として発表している。それに対する質問対応等のフォローアップを行った。なお当該論文は、Clarivate Analytics社のInCitesにおいて2023年のTop10%論文の一つとしてカウントされている。 (4) その他関連する研究課題として、ビールゲームにおけるマルチエージェント深層強化学習手法、マルチエージェント集配問題の解法の改良、平等性を指向したリーグ戦作成に関する研究に取り組み、それぞれ関連する学会誌および研究集会等で成果発表を行った。
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Kobe University, Apr. 2022 - Mar. 2025, Coinvestigatornone
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Kobe University, Apr. 2017 - Mar. 2021How to form a team for achieving a given set of tasks is an important issue in multi-agent systems. Team formation (i.e. set covering problem) is the problem of selecting a group of agents, where each agent is characterized by a set of capabilities; the objective is to achieve a given set of tasks, where each task is made precise by a set of capabilities necessary for managing it. In this work, we investigated the theoretical work for the robust team formation. Additionally, we studied the coalition formation problem (i.e. set partitioning problem) which involves partitioning a set of agents into coalitions so that the social surplus is maximized. Several papers are accepted in top conferences and top journal. Also, we obtained several best paper awards for our research. Finally, DAMT formation and nurse and sport scheduling problems are also investigated as our application problems.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), National Institute of Informatics, Apr. 2017 - Mar. 2021To understand the dynamics of dynamic systems, this study explores methods for learning the transition rules behind the observed state transitions. To this end, we set up the following sub-goals: development of theories for learning relational dynamics, implementation of scalable methods to learn relational dynamics, and application to challenging problems in dynamic environments. On the theoretical side, we extended learning from interpreted transition (LFIT) to handle multi-valued and continuous domains as well as asynchronous updates. On the implementation side, we enabled learning using linear-algebraic methods and neural networks. On the application side, we studied learning in biological systems such as gene regulatory networks, and robustness in agent systems such as team formation and alliance structure formation.
- 平成 30 年度国立情報学研究所共同研究, Apr. 2018 - Mar. 2019, Coinvestigator背景理論付き解集合プログラミングに関する研究開発
- 平成 30 年度国立情報学研究所共同研究, Apr. 2018 - Mar. 2019, Principal investigatorレジリエント AI に関するフィージビルスタディ
- 平成29年度国立情報学研究所共同研究, Apr. 2017 - Mar. 2018解集合プログラミングにおける多目的最適化Competitive research funding
- 平成29年度国立情報学研究所共同研究, Apr. 2017 - Mar. 2018, Principal investigatorロバスト性及び不確実性を考慮した提携構造形成問題に関する研究Competitive research funding
- 高橋産業経済研究財団, Apr. 2016 - Mar. 2018, Principal investigator乗合バス路線を活用した災害時の知的ロジスティクス支援システムの構築Competitive research funding
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Kobe University, Apr. 2014 - Mar. 2017In this research, the framework of a dynamic multi-objective distributed constraint optimization problem has been investigated. First, several efficient algorithms have been developed for solving a multi-objective distributed constraint optimization problem, namely (i) a complete algorithm which can guarantee to find all Pareto optimal solutions (called Pareto front), (ii) an incomplete algorithm that finds a subset of Pareto front, i.e., the obtained solutions can guarantee Pareto optimality, and (iii) an approximation algorithm. Next, a formal framework for a dynamic multi-objective distributed constraint optimization problem is defined and an efficient algorithm is also proposed. Finally, as an application domain, we apply our results to a team formation problem and a nurse-scheduling problem. In summary, this research can be executed according to the research plan described in my proposal. Also, several articles about this research have been accepted in the top conferences for AI.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), National Institute of Informatics, Apr. 2014 - Mar. 2017In this project, we formalize resilient systems that are tolerant to perturbations and are sustainable for maintaining their functionality, and consider several inference problems on this formalization, which can be used for designing resilient systems. Contributions are summarized as the three points: (A) The model for resilient systems, called SR model, has been extended and several parameterized properties have been improved to capture the resilience of systems. (B) By formalizing the resilience problem in dynamic systems as multi-objective constraint optimization problems, both exact algorithms to get the resilient solutions and approximate algorithms to compute only some representative Pareto solutions have been developed. (C) The notion of resilience has been applied to many applications, including team formation, robot rescue, biological oscillatory systems, belief revision of agents in social networks, then several computational properties have been analyzed for those systems.
- 国立情報学研究所, 平成27年度国立情報学研究所共同研究, Apr. 2015 - Mar. 2016, Principal investigator災害医療のためのダイナミックスケジューリングCompetitive research funding
- 平成26年度国立情報学研究所共同研究, Apr. 2014 - Mar. 2015, Principal investigator多目的分散制約最適化アルゴリズムの開発Competitive research funding
- 平成26年度国立情報学研究所共同研究, Apr. 2014 - Mar. 2015システムズ・レジリエンスのための新しいダイナミック制約問題と高性能アルゴリズムCompetitive research funding
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Kobe University, Apr. 2012 - Mar. 2015Constraint programming is a paradigm for realizing intelligent software systems without explicitly programming the solving algorithm of combinatorial programs. In this research project, we studied and developed high-performance and flexible constraint programming systems by using propositional inference techniques which made big performance progress in recent years. The developed systems are published through the Internet. We also applied the developed systems to various difficult problems (such as course timetabling, test case generation, packing array construction, Hamilton cycle finding, circuit wiring, and systems biology) and obtained superior results compared with previous works.
- 平成25年度国立情報学研究所グランドチャレンジ, Oct. 2013 - Mar. 2014ダイナミック制約ネットワークに関する推論と学習Competitive research funding
- 平成25年度国立情報学研究所共同研究, Apr. 2013 - Mar. 2014ダイナミック制約プログラミングに関する研究Competitive research funding
- 融合研究シ ーズ 探索, Apr. 2013 - Mar. 2014, Principal investigatorサイバーセキュリティ問題の多目的最適化によるモデル化と解法Competitive research funding
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity Start-up, Grant-in-Aid for Research Activity Start-up, 大学共同利用機関法人情報・システム研究機構(新領域融合研究センター及びライフサイ, Aug. 2012 - Mar. 2014In this research, as an initial step toward developing an algorithm that solves (i) coalition structure generation, (ii) division of profit among coalitions, and (iii) optimal actions of agents in coalitions, simultaneously. Using the multi-objective distributed constraint optimization techniques, we developed several algorithms for solving these problems that are considered independently, and also some empirical results are provided.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Kobe University, Apr. 2011 - Mar. 2014We have polished up our distributed optimization techniques including distributed constraint optimization algorithms and distributed Lagrangian relaxation methods so that they can deal with various problem instances with a larger number of agents. Furthermore, we have formulated some problems that are related to environmental issues as distributed optimization problems and evaluated the performance of our distributed algorithms on such realistic problems. Through these basic and applied work on distributed optimization algorithms, we have come to realize the possibilities and current limitations of this technology and now got prepared to make this project go one step further.
- 平成24年度国立情報学研究所共同研究, Apr. 2012 - Mar. 2013分散環境における結論発見およびSAT/MaxSATに関する研究Competitive research funding
- 平成24年度国立情報学研究所グランドチャレンジ, Apr. 2012 - Mar. 2013ダイナミック制約ネットワークに関するフィージビリティスタディCompetitive research funding
