- 2021/10 - 2023/10 ICMI 2021, 2022, 2023 Senior Program Committee Member
- 2019/04 - 2023/03 人工知能学会 言語・音声理解と対話処理研究会 主査
- 2010 - 2023 YRRSDS Scientific Advisor
- 2003 - 2023 SIGDIAL 2003, 2008, 2011-2019, 2022-2023 Program Committee
- 2020/07 - 2021/07 SIGDIAL2020, 2021 Senior Program Committee Member
- 2019/05 - 2021/05 ACL/ISCA Special Interest Group on Discourse and Dialogue (SIGdial) Vice President
- 2020/10 - 2020/10 ACM 22nd International Conference on Multimodal Interaction (ICMI 2020) Program Chair
- 2016/03 - 2020/03 言語処理学会 理事
- 2018 - 2019 SIGDIAL 2018, 2019 Sponsorship Chair
- 2015 - 2019 NAACL 2015, 2018, 2019 Program Committee
- 2011 - 2019 IEEE ICASSP 2011, 2019 Reviewer
- 2009 - 2019 IWSDS 2009-2012, 2014-2020 Program Committee
- 2003 - 2019 ACL 2003, 2008, 2013, 2016, 2017, 2019 Program Committee
- 2017 - 2018 IUI 2017, 2018 Reviewer
- 2012 - 2018 IEEE RO-MAN 2012, 2018 Reviewer
- 2017 - 2017 HRI 2017 Reviewer
- 2017 - 2017 IJCNLP 2017 Program Committee Area Chair for Discourse and Dialogue
- 2006 - 2017 EMNLP 2006, 2009, 2012, 2013, 2017 Program Committee
- 2005 - 2016 IROS 2005, 2006, 2009, 2015, 2016 Reviewer
- 2015 - 2015 ACL-IJCNLP 2015 Program Committee
- 2014 - 2014 IEEE SLT 2014 Reviewer
- 2010 - 2014 Interspeech 2010, 2011, 2012, 2014 Reviewer
- 2009 - 2013 SIGdial Science Advisory Committee Member
- 2012 - 2012 ACL 2012 Program Committee Area Chair for Discourse and Dialogue
- 2007 - 2012 IJCNLP 2007, 2012 Reviewer
- 2011 - 2011 ACL-HLT 2011 Program Committee
- 2010 - 2010 SIGDIAL 2010 General Chair
- 2007 - 2007 IEEE ICRA Reviewer
- 2007 - 2007 ICMI 2007 Workshop on Multimodal Interfaces for Semantic Interaction Orgnizer
- 1994 - 2002 COLING 1994, 2002 Reviewer
- 1991 - 1991 IJCAI 1991 Reviewer