Chairing

• ECIR 2014 Tutorial chair

(Co-)organizing

• CLEF RepLab 2014
• CLEF RepLab 2013
• CLEF RepLab 2012
• LREC 2012 Workshop on Language Engineering for Online Reputation Management
• CLEF 2011
• DIR 2011
• SIGIR 2007

Membership of editorial boards

• Information Retrieval Journal

Program Committee member / Reviewer

Journals

• IEEE Access
• Transactions on Intelligent Systems and Technology
• PLOS ONE
• Transactions on Information Systems
• Transactions on Knowledge and Data Engineering
• Knowledge and Information Systems
• Information Sciences
• Information Systems
• Information Retrieval
• Information Processing and Management
• Artificial Intelligence in Medicine
• Computers in Biology and Medicine
• Journal of Computer Science and Technology
• Journal of Web Semantics
• JASIST

Conferences and workshops

• DSMM 2018
• NewsIR 2018
• WWW 2014-2018
• WSDM 2013-2018
• DESIRES 2018
• BigData 2013–2015
• IJCNLP 2017
• CIKM 2011-2017
• ASONAM 2015-2017
• SIGIR 2007-2017
• ECIR 2007-2017
• ESAIR 2015-2016
• IJCAI 2016
• ProActIR 2016
• ACL-IJCNLP 2015
• KDDA 2015
• EMNLP 2014
• IRFC 2013-2014
• COLING 2014
• ACL 2013-2014
• Hadoop summit 2014
• EACL 2012-2014
• IJCNLP 2013
• RAMSS 2012-2013 (WWW workshop)
• SNOW 2013 (WWW workshop)
• DISH-2013 (WWW workshop)
• WoLE 2012-2013 (WWW workshop)
• JIWES 2012 (SIGIR workshop)
• WebSci 2012
• CLEF 2011
• SPIRE 2009
• HT 2008
• LREC 2008
• SemSearch 2008
• ISWC 2007
• ECIR 2007
• EMNLP 2007
• WIDM 2006
• ESSLLI 2006