- 2021/07 - 現在 International Joint Conference on Artificial Intelligence (IJCAI) Program Committee Board
- 2010/10 - 現在 NII 湘南会議 学術委員
- 2023/05 - 2023/11 The 32nd International Conference on Inductive Logic Programming (ILP 2023) Member of Program Committee
- 2023/05 - 2023/10 The 26th European Conference on Artificial Intelligence (ECAI 2023) Member of Program Committee
- 2022/11 - 2023/09 The 20th International Conference on Principles of Knowledge Representation and Reasoning (KR2023) Area Chair
- 2022/11 - 2023/07 The 39th International Conference on Logic Programming (ICLP 2023) Member of Program Committee
- 2017/09 - 2022/12 Atlanstic 2020, France Member of Scientific Committee
- 2022/01 - 2022/09 The 31st International Conference on Inductive Logic Programming (ILP 2022) Member of Program Committee
- 2022/01 - 2022/09 The 16th International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR 2022) Member of Program Committee
- 2022/07 - 2022/08 Universidad Politécnica de Madrid International External Reviewer
- 2021/11 - 2022/08 The 19th International Conference on Principles of Knowledge Representation and Reasoning (KR 2022) Member of Program Committee
- 2021/09 - 2022/07 The 38th International Conference on Logic Programming (ICLP 2022) Member of Program Committee
- 2021/07 - 2022/07 The 31st International Joint Conference on Artificial Intelligence (IJCAI-ECAI-22) Member of Program Committee
- 2021/03 - 2022/03 International Journal of Intelligent Systems Design and Computing Guest Editor, Special Issue on “Knowledge Engineering and Technologies of Intelligent Systems”
- 2021/02 - 2021/11 The 18th International Conference on Principles of Knowledge Representation and Reasoning (KR 2021) Member of Program Committee
- 2020/01 - 2021/10 The 30th International Conference on Inductive Logic Programming (ILP 2020-2021) Member of Program Committee
- 2021/05 - 2021/09 The 14th Workshop on Answer Set Programming and Other Computing Paradigms (ASPOCP 2021) Member of Program Committee
- 2021/02 - 2021/09 The 37th International Conference on Logic Programming (ICLP 2021) Member of Program Committee
- 2020/08 - 2021/08 The 30th International Joint Conference on Artificial Intelligence (IJCAI-21) Member of Senior Program Committee
- 2017/04 - 2021/03 (一社)人工知能学会 代議員
- 2019/09 - 2021/01 The 29th International Joint Conference on Artificial Intelligence and the 17th Pacific Rim International Conference on Artificial Intelligence (IJCAI-PRICAI 2020) Senior Program Committee member
- 2020/06 - 2020/12 The 34th Annual Conference on Neural Information Processing Systems (NeurIPS 2020) Reviewer
- 2020/05 - 2020/12 The 11th International Conference on Computational Systems-Biology and Bioinformatics (CSBio 2020) Member of Program Committee
- 2005/03 - 2020/12 Theory and Practice of Logic Programming (Cambridge Journal) Editorial Advisor
- 2020/04 - 2020/09 The 13th Workshop on Answer Set Programming and Other Computing Paradigms (ASPOCP 2020) Member of Program Committee
- 2020/02 - 2020/09 The 18th International Workshop on Non-Monotonic Reasoning (NMR 2020) Member of Program Committee
- 2020/01 - 2020/09 The 36th International Conference on Logic Programming (ICLP 2020) Member of Program Committee
- 2020/01 - 2020/09 The 17th International Conference on Principles of Knowledge Representation and Reasoning (KR 2020) Area Chair
- 2019/12 - 2020/09 The 18th International Conference on Computational Methods in Systems Biology (CMSB 2020) Member of Program Committee
- 2018/06 - 2020/01 NII湘南会議 No. 157: “Formal Methods for the Synthesis of Biomolecular Circuits” Co-Organizer
- 2019/02 - 2019/12 The 10th International Conference on Computational Systems-Biology and Bioinformatics (CSBio 2019) Member of Program Committee
- 2018/11 - 2019/11 The 29th International Conference on Inductive Logic Programming (ILP 2019) Member of Program Committee
- 2018/12 - 2019/09 The 35th International Conference on Logic Programming (ICLP 2019) Member of Program Committee
- 2017/10 - 2018/11 The 27th International Joint Conference on Artificial Intelligence and the 23rd European Conference on Artificial Intelligence (IJCAI-ECAI-18) Member of Senior Program Committee
- 2018/05 - 2018/10 The 17th International Workshop on Non-Monotonic Reasoning (NMR 2018) Member of Program Committee
- 2018/02 - 2018/09 The 28th International Conference on Inductive Logic Programming (ILP 2018) Member of Program Committee
- 2016/12 - 2018/04 The 27th International Conference on Inductive Logic Programming (ILP 2017) Member of Program Committee
- 2017/06 - 2018/02 The 32nd AAAI Conference on Artificial Intelligence (AAAI-18) Member of Program Committee
- 2014/09 - 2017/12 The 25h International Conference on Inductive Logic Programming (ILP 2015) Conference co-Chair
- 2017/05 - 2017/10 The 3rd Global Conference on Artificial Intelligence (GCAI 2017) Member of Program Committee
- 2016/11 - 2017/08 The 26th International Joint Conference on Artificial Intelligence (IJCAI-17) Member of Senior Program Committee
- 2016/10 - 2017/07 The 14th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU 2017) Member of Program Committee
- 2015/12 - 2017/05 The 26th International Conference on Inductive Logic Programming (ILP 2016) Member of Program Committee
- 2016/01 - 2016/10 The 32nd International Conference on Logic Programming (ICLP 2016) Member of Program Committee
- 2014/05 - 2016/06 (一社)人工知能学会 理事
- 2015/09 - 2016/05 The 16th International Workshop on Non-Monotonic Reasoning (NMR 2016) Member of Program Committee
- 2015/05 - 2015/10 The 1st Global Conference on Artificial Intelligence (GCAI 2015) Member of Program Committee
- 2014/12 - 2015/09 The 2nd International Workshop on Learning and Nonmonotonic Reasoning (LNMR 2015) Member of Program Committee
- 2014/11 - 2015/07 The 24th International Joint Conference on Artificial Intelligence (IJCAI-15) Member of Senior Program Committee
- 2014/09 - 2015/06 Workshop on Emergent Computational Logics (affiliated with The 5th World Congress and School on Universal Logic [UNILOG 2015]) Workshop co-Organizer
- 2014/05 - 2015/01 The 29th AAAI Conference on Artificial Intelligence (AAAI-15) Member of Program Committee
- 2011/10 - 2015/01 Computational Logic in Multi-Agent Systems (CLIMA) Member of Steering Committee
- 2014/05 - 2014/11 Special Track on SAT and CSP Technologies, The 26th IEEE International Conference on Tools with Artificial Intelligence (ICTAI-SAT-CSP 2014) Member of Program Committee
- 2014/01 - 2014/09 The 24th International Conference on Inductive Logic Programming (ILP 2014) Member of Program Committee
- 2013/10 - 2014/09 The 1st International Conference on Formal Methods in Macro-Biology (FMMB 2014) Member of Program Committee
- 2014/03 - 2014/08 The 15th International Workshop on Computational Logic in Multi-Agent Systems (CLIMA-XV) Member of Program Committee
- 2014/01 - 2014/08 The 8th International Conference on the Prestigious Applications of Intelligent Systems (PAIS 2014) Member of Program Committee
- 2013/12 - 2014/07 The 15th International Workshop on Non-Monotonic Reasoning (NMR 2014) Member of Program Committee
- 2013/10 - 2014/07 The 28th AAAI Conference on Artificial Intelligence (AAAI-14) Member of Program Committee
- 2013/09 - 2014/07 The 14th International Conference on Principles of Knowledge Representation and Reasoning (KR 2014) Member of Program Committee
- 2013/05 - 2013/11 Special Track on SAT and CSP Technologies, The 25th IEEE International Conference on Tools with Artificial Intelligence (ICTAI-SAT-CSP 2013) Member of Program Committee
- 2013/05 - 2013/09 The 20th International Conference on Applications of Declarative Programming and Knowledge Management (INAP 2013) Member of Program Committee
- 2013/03 - 2013/09 The 14th International Workshop on Computational Logic in Multi-Agent Systems (CLIMA-XIV) Member of Program Committee
- 2012/10 - 2013/09 The 10th International Symposium on Frontiers of Combining Systems (FroCoS 2013) Member of Program Committee
- 2012/07 - 2013/09 The 1st International Workshop on Learning and Nonmonotonic Reasoning (LNMR 2013) Workshop co-Chair
- 2013/01 - 2013/08 The 23rd International Joint Conference on Artificial Intelligence (IJCAI-13) Member of Program Committee
- 2012/12 - 2013/08 The 23rd International Conference on Inductive Logic Programming (ILP 2013) Member of Program Committee
- 2013/01 - 2013/06 The 1st Workshop on Systems Resilience (WSR 2013) Member of Program Committee
- 2012/09 - 2013/06 The 12th International Conference on Autonomous agents and Multiagent Systems (AAMAS 2013) Member of Program Committee
- 2012/04 - 2012/09 ECML/PKDD 2012 Workshop on Learning and Discovery in Symbolic Systems Biology (LDSSB 2012) Workshop co-Organizer
- 2011/12 - 2012/09 The 28th International Conference on Logic Programming (ICLP 2012) Member of Program Committee
- 2011/10 - 2012/09 The 22nd International Conference on Inductive Logic Programming (ILP 2012) Member of Program Committee
- 2012/03 - 2012/08 The 13th International Workshop on Computational Logic in Multi-Agent Systems (CLIMA-XIII) Member of Program Committee
- 2011/12 - 2012/08 The 20th European Conference on Artificial Intelligence (ECAI 2012) Member of Program Committee
- 2011/09 - 2012/06 The 13th International Conference on Principles of Knowledge Representation and Reasoning (KR 2012) Member of Program Committee
- 2010/12 - 2011/11 International Symposium on Symbolic Systems Biology (ISSSB 2011), NII Shonan Meeting, No.010 Symposium co-Organizer
- 2011/05 - 2011/09 The 19th International Conference on Applications of Declarative Programming and Knowledge Management (INAP 2011) Member of Program Committee
- 2010/10 - 2011/08 The 21st International Conference on Inductive Logic Programming (ILP 2011) Member of Program Committee
- 2011/02 - 2011/07 The 8th International Workshop on First-Order Theorem Proving (FTP 2011) Member of Program Committee
- 2010/12 - 2011/07 The 12th International Workshop on Computational Logic in Multi-Agent Systems (CLIMA-XII) Member of Program Committee
- 2010/12 - 2011/07 The 22nd International Joint Conference on Artificial Intelligence (IJCAI-11) Member of Program Committee
- 2010/10 - 2011/07 The 27th International Conference on Logic Programming (ICLP 2011) Member of Program Committee
- 2010/10 - 2011/06 The 14th International Conference on Theory and Applications of Satisfiability Testing (SAT 2011) Member of Program Committee
- 2010/12 - 2011/03 The 7th Workshop on Learning with Logics and Logics for Learning (LLLL 2011) Member of Program Committee
- 2010/01 - 2010/08 The 11th International Workshop on Computational Logic in Multi-Agent Systems (CLIMA-XI) Member of Program Committee
- 2009/09 - 2010/06 The 20th International Conference on Inductive Logic Programming (ILP 2010) Member of Program Committee
- 2009/10 - 2010/05 Sub-Workshop on Preferences and Norm at the Non-Monotonic Reasoning Workshop 2010 (NMR 2010) Member of Program Committee
- 2009/10 - 2010/05 Sub-Workshop on Declarative Programming and Systems at the Non-Monotonic Reasoning Workshop 2010 (NMR 2010) Member of Program Committee
- 2009/03 - 2009/09 The 10th International Workshop on Computational Logic in Multi-Agent Systems (CLIMA-X) Member of Program Committee
- 2009/01 - 2009/09 The 3rd Franco-Japanese Symposium on Knowledge Discovery in Systems Biology Symposium co-Organizer
- 2008/09 - 2009/08 The 22nd International Conference on Automated Deduction (CADE-22) Member of Program Committee
- 2009/01 - 2009/07 The 19th International Conference on Inductive Logic Programming (ILP 2009) Member of Program Committee
- 2008/11 - 2009/07 IJCAI-09 Workshop on Abductive and Inductive Knowledge Development Member of Program Committee
- 2008/07 - 2009/07 The 10th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU 2009) Member of Program Committee
- 2009/01 - 2009/06 The 6th Workshop on Learning with Logics and Logics for Learning (LLLL 2009) Member of Program Committee
- 2008/06 - 2009/06 The 16th Workshop on Logic, Language, Information and Computation (WoLLIC 2009) Member of Program Committee
- 2008/12 - 2009/05 The 2009 IEEE International Workshop on Bioinformatics and Life Science Modeling and Computing (BLSMC 2009) General co-Chair
- 2008/01 - 2008/10 The 2nd Franco-Japanese Symposium on Knowledge Discovery in Systems Biology Symposium co-Organizer
- 2007/12 - 2008/10 The 19th Brazilian Symposium on Artificial Intelligence (SBIA 2008) Member of Technical Program Committee
- 2008/03 - 2008/09 The 9th International Workshop on Computational Logic in Multi-Agent Systems (CLIMA-IX) Member of Program Committee
- 2008/01 - 2008/09 The 18th International Conference on Inductive Logic Programming (ILP 2008) Member of Program Committee
- 2008/02 - 2008/07 The Preferences Track at The 12th International Workshop on Non-Monotonic Reasoning (NMR 2008) Member of Program Committee
- 2007/01 - 2007/12 eBritain Science & Innovation Magazine Associate Editor
- 2007/04 - 2007/09 The International Symposium on Skill Science 2007 (ISSS 2007) Member of Program Committee
- 2007/02 - 2007/09 The 2007 International Workshop on Abduction and Induction in Artificial Intelligence and Bioinformatics (AIAI 2007) Member of Organizing and Program Committees
- 2007/01 - 2007/09 人工知能学会論文誌「スキルサイエンス」特集号 編集委員
- 2007/01 - 2007/09 The 1st Franco-Japanese Symposium on Knowledge Discovery in Systems Biology Symposium co-Organizer
- 2006/12 - 2007/09 The 8th International Workshop on Computational Logic in Multi-Agent Systems (CLIMA-VIII) Member of Program Committee
- 2006/10 - 2007/09 The 23rd International Conference on Logic Programming (ICLP 2007) Member of Program Committee
- 2006/12 - 2007/06 The 5th Workshop on Learning with Logics and Logics for Learning (LLLL 2007) Member of Program Committee
- 2005/01 - 2007/06 The 7th International Workshop on Computational Logic in Multi-Agent Systems (CLIMA-VII) Workshop co-Chair
- 2006/11 - 2007/05 LPNMR’07 Workshop on Correspondence and Equivalence for Nonmonotonic Theories (CENT 2007) Member of Program Committee
- 2006/05 - 2007/05 The 9th International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR 2007) Member of Program Committee
- 2006/01 - 2006/12 The 16th International Conference on Inductive Logic Programming (ILP 2006) Member of Program Committee
- 2005/12 - 2006/08 ECAI ’06 Workshop on Abduction and Induction in AI and Scientific Modelling (AIAI 2006) Member of Program Committee
- 2006/01 - 2006/06 The 4th Workshop on Learning with Logics and Logics for Learning (LLLL 2006) Member of Program Committee
- 2004/04 - 2006/03 (社)人工知能学会 論文誌編集委員
- 2004/11 - 2005/09 The 8th International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR 2005) Member of Program Committee
- 2004/12 - 2005/08 The 15th International Conference on Inductive Logic Programming (ILP 2005) Member of Program Committee
- 2005/01 - 2005/06 The 3rd Workshop on Learning with Logics and Logics for Learning (LLLL 2005) Member of Program Committee
- 2004/11 - 2005/06 The 6th International Workshop on Computational Logic in Multi-Agent Systems (CLIMA-VI) Member of Program Committee
- 2004/07 - 2005/06 2005年度人工知能学会全国大会(第19 回) プログラム委員
- 2003/04 - 2005/03 (社)人工知能学会 評議員
- 2000/03 - 2004/12 AI Communications (AICOM), IOS Press Member of Editorial Board
- 2004/02 - 2004/09 The 14th International Conference on Inductive Logic Programming (ILP 2004) Member of Program Committee
- 2003/06 - 2004/09 The 5th International Workshop on Computational Logic in Multi-Agent Systems (CLIMA-V) Member of Program Committee
- 2003/06 - 2004/05 2004年度人工知能学会全国大会(第18回) プログラム委員
- 2003/09 - 2004/01 The 4th International Workshop on Computational Logic in Multi-Agent Systems (CLIMA-IV) Program Committee Member
- 2002/11 - 2003/09 The 13th International Conf. on Inductive Logic Programming (ILP 2003) Program Committee Member
- 2002/07 - 2003/07 The 7th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU-2003) Program Committee Member
- 2001/11 - 2002/09 The 8th European Conference on Logics in Artificial Intelligence (JELIA ’02) Program Committee Member
- 2002/02 - 2002/08 ICLP’02 Workshop on Computational Logic in Multi-Agent Systems (CLIMA-02) Program Committee Member
- 2001/07 - 2002/08 The 18th International Conference on Logic Programming (ICLP 2002) Program Committee Member
- 2001/10 - 2002/04 Special Session on Answer Set Programming and Abductive Reasoning, The 9th International Workshop on Non-Monotonic Reasoning (NMR 2002) Program Committee Member
- 2000/02 - 2002/03 IEEE 関西支部 Awards Committee
- 1992/04 - 2002/03 (社)人工知能学会 基礎論研究会連絡委員
- 2001/05 - 2001/12 ICLP’01 Workshop on Computational Logic in Multi-Agent Systems (CLIMA-01) Program Committee Member
- 2000/07 - 2001/09 The 6th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU 2001) Program Committee Member
- 2000/03 - 2001/09 The 6th International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR ’01) Program Committee Member
- 2001/05 - 2001/08 IJCAI-2001 Workshop on Abductive Reasoning Program Committee Member
- 2000/02 - 2000/07 CL2000 Workshop on Computational Logic in Multi-Agent Systems (CLIMA ’00) Program Committee Member
- 1999/05 - 2000/07 The 1st International Conference on Computational Logic (CL 2000) Program Committee Member
- 1999/10 - 2000/04 The 8th International Workshop on Non-Monotonic Reasoning (NMR 2000) Program Committee Member
- 1997/06 - 1999/04 (社)情報処理学会 論文査読委員
- 1995/04 - 1999/03 (社)情報処理学会 知識と複雑系研究会連絡委員
- 1998/01 - 1998/08 ECAI-98 Workshop on Abduction and Induction in AI Program Committee Member
- 1996/11 - 1997/08 IJCAI-97 Workshop on Abduction and Induction in AI Program Committee Member
- 1996/04 - 1997/07 The 4th International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR’97) Program Committee Member
- 1996/10 - 1997/03 (財) 日本情報処理開発協会 (JIPDEC), 先端情報技術研究所 (AITEC) 法的推論ワーキンググループ 委員
- 1996/04 - 1996/09 New Generation Computing Journal 誌面刷新委員会
- 1995/01 - 1995/06 The 3rd ICLP-Workshop on Deductive Databases and Logic Programming Program Committee Member
- 1993/04 - 1995/03 (財) 新世代コンピュータ技術開発機構 (ICOT) 並列定理証明タスクグループ 委員
- 1994/04 - 1994/12 FGCS’94 Workshop on Automated Theorem Proving Program Committee Member
- 1992/01 - 1992/11 The 3rd IEEE International Conference on Tools for Artificial Intelligence (ICTAI ’91) Program Committee Member
- 1992/01 - 1992/08 ECAI-92 Workshop on Applications of Reason Maintenance Systems Program Committee Member
- 1991/01 - 1991/10 International Workshop on Applications of Reason Maintenance Systems (Maastricht, The Netherlands, October 24-25, 1991) Program Committee Member