- 2018/04/01 - 2020/03/31 情報処理学会 データベースシステム研究会主査
- 2020 - ACM Short Paper Program Committee Member
- 2020 - IEEE PC Vice Chairs in Big Data Management
- 2020 - IEEE Program Committee Member
- 2020 - VLDB Endowment Program Committee Member
- 2017/05/10 - 2019 情報処理学会 関西支部長
- 2019 - - -
- 2019 - - -
- 2018 - IEEE Program Committee Member
- 2018 - ACM/IEEE Program Committee Member
- 2018 - ACM Senior Program Committee member for Short Papers
- 2017 - IEEE General Co-Chair
- 2015/04/17 - 2015/04/17 IEEE Workshop Co-Chair
- 2015/04/13 - 2015/04/16 IEEE PC member of the Applications track
- 2014/08/17 - 2014/08/20 IEEE/ACM PC member
- 2009 - 2011 情報処理学会 理事
- 2010 - IAIT2010 member of the Advisory Committee
- 2010 - APWeb Program Committee Member
- 2010 - EDBT 2010 Program Committee Member
- 2010 - FoIKS 2010 Program Committee Member
- 2009 - CIKM 2009 Tutorial co-Chair
- 2009 - - Program Committee Member
- 2009 - CIKM 2009 Program Committee Member
- 2009 - WICOW 2009 Program Committee Member
- 2009 - - Program Committee Member
- 2009 - DASFAA 2009 Program Committee Member
- 2008 - VLDB'08 Program Committee Member
- 2008 - CoopIS 2008 Program Committee Member
- 2008 - INFOS 2008 Program Committee Member
- 2008 - - Program Committee Member
- 2007 - VLDB 2007 Core Database Technology Track, Program Committee Member
- 2007 - SWOD2007,ICDE 2007 Program Committee Member and Advisor
- 2007 - ICDE 2007 Program Committee Member
- 2006 - ICADL 2006 Program Committee Member
- 2006 - CIKM 2006 Program Committee Member
- 2006 - ICADL 2006 Finance Chair
- 2006 - WAIM'06 Program Committee Member
- 2006 - DASFAA 2006 Publicity Chair
- 2006 - WISE 2006 Program Committee Member
- 2006 - SWOD2006, ICDE 2006 Program Committee Member and Advisor
- 2006 - DASFAA 2006 Program Committee Member
- 2006 - XSDM 2006 Program Committee Member
- 2006 - - member of Best Paper Award Committee
- 2006 - Program Committee ``Database Applications and Experiences'' Area Chair
- 2002 - 日本データベース学会 理事
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