- 2020 - 2021 ACM SIGIR, Senior PC member
- 2020 - 2021 ACM CHIIR 2021, Program Co-Chair
- 2020 - 2020 ACM ICMR 2020, Dublin (virtual event), General Co-Chair
- 2014/07 - 2017/08 ACM SIGIR 2017, Tokyo, General Co-chair
- 2015/01 - 2016/06 NTCIR-12 General Co-Chair
- 2014/05 - 2016/03 内閣府 国立公文書館の機能・施設の在り方等に関する調査検討会議・委員
- 2014 - 2015 Guest Editor, Journal of Information Science Special Issue on "Search as Learning"
- 2014 - 2015 CIKM 2015 PC Member
- 2014 - 2015 SIGIR 2015 Short Paper PC Member
- 2014 - 2015 SIGIR 2015 PC Member
- 2013/07 - 2014/12 NTCIR-11 General Co-Chair
- 2013 - 2014 SIGIR 2014 Best Paper Award Committee, Member
- 2013 - 2014 SIGIR 2014, Short Paper PC Member
- 2013 - 2014 SIGIR 2014, PC Member
- 2013 - 2014 SIGIR 2014 Test of the Time Award Committee, Member
- 2013 - 2014 言語処理学会 二十周年記念論文選考委員会・委員
- 2013 - 2014 CIKM The 7th Workshop on Exploroiting Semantic Annotation for Information Retrieval (ESAIR 2014), PC Member
- 2013 - 2014 CIKM 2014, Area Chair
- 2012 - 2014 Guest Editor, Information Retrieval (ジャーナル)Special Issue on Information Retrieval in the Intellectual Property Domain
- 2007/07 - 2013/12 Elsevier Information Processing and Management, Associate Editor
- 2012/01 - 2013/06 NTCIR-10 General Co-Chair
- 2012 - 2013 CIKM The 6th Workshop on Exploroiting Semantic Annotation for Information Retrieval (ESAIR 2013), PC Member
- 2011 - 2013 総務省 情報通信審議会情報通信政策部会新事業創出戦略委員会・構成員
- 2011 - 2012 総務省 知のデジタルアーカイブに関する研究会・構成員
- 2011 - 2012 CIKM The 5th Workshop on Exploroiting Semantic Annotation for Information Retrieval (ESAIR 2012), PC Member
- 科学研究費委員会専門委員
全件表示
日本データベース学会
, 電子情報通信学会
, 情報知識学会
, 三田図書館情報学会
, 日本図書館情報学会
, 人工知能学会
, 情報処理学会
, 言語処理学会
, ACM Special Interest Group on Information Retrieval (SIGIR)
, Association for Computing Machinery (ACM)
, Association for Information Science and Technology (ASIS&T)
, The Association for Computational Linguistics (ACL)