Peer review for journals / book series / research proposals

• ACM Transactions on Information Systems;
• Information Processing & Management;
• Speech Communication;
• Information Retrieval;
• ACM Transactions on Asian Language Information Processing;
• Journal of Natural Language Engineering;
• Computer Vision and Image Understanding;
• Human Language Technologies, Morgan and Claypool
• ERC Ideas
• EU ERANET
• NWO Vrije competitie, NWO vernieuwingsimpuls (VENI, VIDI)

Special issue guest editor

• Searching speech, for ACM Transactions on Informations Systems, 2012
• Web scale near duplicate search, for IEEE Multimedia, september, 2013

Programme committees

2016

• ACM SIGIR 2016 (area chair)
• ACM MM 2016 (travel grant chair)

2014

• ACM SIGIR 2015 (area chair)
• WWW 2015

2014

• CLEF labs 2014 (progamme chair)
• Measuring Behavior 2014 (session chair smart reasoning systems)

2013

• ECIR 2013
• ICME 2013
• ACM Multimedia 2013
• ACM SIGIR 2013 (area chair)
• EU Erasmus summer school on Information Foraging 2013 (scientific coordinator)

2012

• ACM SIGIR 2012 (area chair)
• IIiX 2012 (general co-chair)
• ECIR 2012
• ACM ICMR 2012
• EU Erasmus summer school on Information Foraging 2012 (scientific coordinator)

2011

• ACM SIGIR 2011 (area chair)
• ECIR 2011 (poster chair)
• USEWOD2011 – 1st International Workshop on Usage Analysis and the Web of Data (co-located with WWW2011)
• ACM ICMR 2011
• EU Erasmus summer school on Information Foraging 2011 (scientific coordinator)

2010

• DIR 2010 (chair)
• SIGIR 2010
• ACL 2010
• SSCS 2010 workshop @ ACM Multimedia 2010 (co-organizer)
• AIEMPRO 2010 workshop @ ACM Multimedia 2009
• IRF conference 2010

2009

• ACM CIKM SIGIR 2009 (IR track vice programme chair)
• ACM SIGIR 2009
• ACL 2009
• ECIR 2009
• DIR 2009
• ICSC 2009: special session on speech search
• SSCS 2009 workshop @ ACM Multimedia 2009 (co-organizer)
• Multimedia in Forensics workshop @ ACM Multimedia 2009
• co-chair SAMT 2009 Industry Day
• organizer symposium “In search of privacy”

2000-2008

• SAMT 2008: PC member
• IIix 2008: PC member
• ACM SIGIR 2009: PC member; ACM SIGIR 2008: PC member; ACM SIGIR 2007, Amsterdam: general (co)chair
  ACM SIGIR 2006: PC member, best paper awards committtee ;
  ACM SIGIR 2005: PC member ;
  ACM SIGIR 2004: PC member ;
  ACM SIGIR 2003: PC, area coordinator CLIR;
  ACM SIGIR 2002: best paper awards committee;
  SIGIR 2002 workshop roadmap for CLIR: PC member
• ECIR 2009: PC member and best paper committee; ECIR 2008: PC member; ECIR 2007: PC member; ECIR 2006: PC member; ECIR 2005: PC member ;
  ECIR 2004: PC member ;
  ECIR 2003: PC member
• CORIA 2006: PC member
• ACL 2009: PC member; ACL 2003: PC member
• International Joint conference on NLP 2005: PC member
• IJCAI 2005 workshop: Multi-Agent Information Retrieval and Recommender Systems: PC member
• ACM CIKM 2005 : PC member
• ICME 2005: PC member
• CIVR 2006: PC member; CIVR 2004: PC member
• EMNLP 2002: PC member ;
  EMNLP 2001: PC member
• DUC 2002: PC member
• HLT/NAACL 2006: PC member ;
  HLT 2002: PC member
• COLING 2002 workshop on multilingual summarization and question answering: PC member
• DIR 2002: PC member and editor proceedings ; DIR 2006, co-chair, DIR 2008, PC member; DIR 2009, PC member
• RIAO 2000: PC member

Membership,
Boards.

• TRECVID
  (international video indexing and retrieval evaluation campaign) (2003-): joint coordinator (with Alan
  Smeaton)
• ACM: senior member
• ACM SIGIR: member
• ACM SIGKDD: member
• BCS IRSG: member
• Journal of Multimedia: member of the editorial board
• CLIN Journal: member of the editorial board
• Information Processing & Management: member of the editorial board (2009-2015)

Panels

• CLEF 2000 closing panel session
• DUC 2002 panel on evaluation of automatic summarization
  systems
• Search engines meeting 2004, panel on multilingual information
  retrieval