PC member of the poster track at 35th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2012)
PC member of the ACM/IEEE Joint Conference on Digital Libraries (JCDL 2012)
PC member of the 17th Database Systems for Advanced Applications Conference (DASFAA 2012)
PC member of the 23rd International Conference on Database and Expert Systems Applications (DEXA 2012)
PC member of the 5th Workshop on Data Quality in Data Integration System (DQDI 2012) in conjunction with the 17th Database Systems for Advanced Applications Conference (DASFAA 2012)
PC member of the 2nd International Temporal Web Analytics Workshop at WWW2012 (TempWeb 2012)
PC member of The 2012 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2012)
PC member of the 15th International Conference on Business Information Systems (BIS 2012)
PC member of the poster track at 34th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2011)
PC member of the 16th Database Systems for Advanced Applications Conference (DASFAA 2011)
PC member of the 13th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2011)
PC member of the 1st International Temporal Web Analytics Workshop at WWW2011 (TWAW 2011)
PC member of the 4th Workshop on Data Quality in Data Integration System (DQDI 2011) in conjunction with the 16th Database Systems for Advanced Applications Conference (DASFAA 2011)
PC member of the 7th Asia Information Retrieval Societies Conference (AIRS 2011)
PC member of the 14th International Conference on Business Information Systems (BIS 2011)
PC member of the 1st Workshop on Social Network Analysis in Applications (SNAA 2011) in conjunction with the International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2011)
PC member of the 22nd International Conference on Database and Expert Systems Applications (DEXA 2011)
PC member of the 33rd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2010)
PC member of the 23rd International Conference on Computational Linguistics (COLING 2010)
PC member of the 6th Asia Information Retrieval Societies Conference (AIRS 2010)
PC member of the 21st ACM Conference on Hypertext and Hypermedia (HT 2010)
PC member of the Doctoral Consortium at the Joint JCDL/ICADL International Digital Libraries Conference (Doctoral Consortium JCDL-ICADL 2010)
PC member of the International Conference on Data and Knowledge Engineering (ICDKE 2010)
PC member of the 2nd International Conference on Social Informatics (SocInfo 2010)
PC member of the 21st International Conference on Database and Expert Systems Applications (DEXA 2010)
PC member of the 10th International Web Archiving Workshop (IWAW 2010) with the 7th International Conference on Preservation of Digital Objects (iPres 2010)
PC member of the 3rd Workshop on Mashups, Enterprise Mashups and Lightweight Composition on the Web (MEM 2010) in conjunction with the 19th International World Wide Web Conference (WWW 2010)
PC member of the 3rd International Workshop on Managing Data Quality in Collaborative Information Systems (MCIS 2010) in conjunction with 15th International Conference on Database Systems for Advanced Applications (DASFAA 2010)
PC member of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2009)
PC member of Information Structure and Presentation Track at the 20th ACM Conference on Hypertext and Hypermedia (HT 2009)
PC member of the 20th International Conference on Database and Expert Systems Applications (DEXA 2009)
PC member of the demo track at the 14th International Conference on Database Systems for Advanced Applications (DASFAA 2009)
PC member of the 2nd, 3rd, 4th and 5th KES International Symposium on Agent and Multi-Agent Systems: Technologies and Applications (KES-AMSTA-08 KES-AMSTA-09 KES-AMSTA-10 KES-AMSTA-11)
PC member of the 2009 and 2010 IEEE International Conference on e-Business Engineering (ICEBE 2009 ICEBE 2010)
PC member of the 9th International Web Archiving Workshop (IWAW 2009) in conjunction with the 13th European Conference on Digital Libraries (ECDL 2009)
PC member of the "Engineering Knowledge and Semantic Systems" session at the 22nd, 23rd and 24th International Conference on Industrial, Engineering & Other Applications of Applied Intelligent Systems (IEA/AIE 2009 IEA/AIE 2010 IEA/AIE 2011)
PC member of the 2nd Workshop on Mashups, Enterprise Mashups and Lightweight Composition on the Web (MEM 2009) in conjunction with the 18th International World Wide Web Conference (WWW 2009)
PC member of the Workshop on Innovation in Digital Preservation (InDP 2009) in conjunction with the 9th ACM/IEEE-CS Joint Conference on Digital Libraries (JCDL 2009)
PC member of the 3rd Workshop on Social Aspects of the Web (SAW 2009) in conjunction with the 12th International Conference on Business Information Systems (BIS 2009)
PC member of the 1st International Workshop on Intelligent Systems for Environmental (Knowledge) Engineering and EcoInformatics (i-SEEK 2009) in conjunction with the 3rd International Conference on Complex, Intelligent and Software Intensive Systems (CISIS 2009)
PC member of the 2nd Workshop on Collective Intelligence in Semantic Web and Social Networks (CISWSN 2008) in conjunction with the IEEE/WIC/ACM International Conference on Web Intelligence (WI 2008)
PC member of the 2nd IEEE Conference and Exibition on Next Generation Mobile Applications, Services and Technologies (NGMAST 2008)
PC member of the 1st Workshop on Mashups, Enterprise Mashups and Lightweight Composition on the Web (MEM&LCW 2008) in conjunction with the 9th International Conference on Web Information Systems Engineering (WISE 2008)
PC member of the 1st International Symposium on Intelligent Interactive Multimedia Systems and Services (KES-IIMSS-08)
PC member of Workshop on Collective Intelligence on Semantic Web (CISW 2007) in conjunction with the IEEE/WIC/ACM Joint International Conference on Web Intelligence and Intelligent Agent Technology (WI/IAT 2007)
PC member of Workshop on Future Mobile and Ubiquitous Information Technologies (FMUIT 2006) in conjunction with 7th International conference on Mobile Data Management (MDM 2006)
PC member of Workshop on XML, Web and Internet Content Technologies (XWICT 2006) in conjunction with 7th International Conference on Web-age Information Management (WAIM 2006)
Reviewer of Internetational Journal of Human-Computer Studies, Elsevier in 2012 (IJHCS)
Reviewer of Internetational Journal of Decision Support Systems, Elsevier in 2012 (DSS)
Reviewer of Internet Research Journal in 2011 (IRJ)
Reviewer of Central European Journal of Computer Science in 2011 (CEJCS)
Reviewer of the 4th International Conference on Web Search and Data Mining (WSDM 2011)
Reviewer of the 9th International Conference on Web Engineering (ICWE 2009)
Reviewer of the 18th International World Wide Web Conference (WWW 2009)
Reviewer for ACM Transactions on Information Systems in 2009 (TOIS) and Journal of Computer Science and Technology in 2009-2010 (JCST)
Reviewer of the 8th International Conference on Web Engineering (ICWE 2008)
Reviewer of the 17th International World Wide Web Conference (WWW 2008)
Reviewer of the 12th International Conference on Knowledge-Based and Intelligent Information & Engineering Systems (KES 2008)
Reviewer of the 12th Database Systems for Advanced Applications Conference (DASFAA 2007)
Reviewer for Database and Web Information Systems Symposium (DBWeb 2006) and guest reviewer for Transactions on Databases (TOD) and Journal of the Institute of Electronics, Information and Communication Engineers (IEICE)