I am on the editorial board of Information Retrieval, a Springer journal.
I also serve as the ACL Anthology Editor, as of 2008, and was elected to be be board member of the executive committee of the Association of Computational Linguistics, as their first information officer.
I served as the registration chair for SIGIR 2008 and have served as publicity chair and helped out in the local organization for ACL-IJCNLP 2009. I have also served as the publication chair of AIRS 2006.
I am an active member of the community, serving as a reviewer and program committee for a number of conferences in my active research areas. In digital libraries, I have reviewed for JCDL ('12, '11, '09, '08, '07, '06 and '05), TPDL/ECDL ('12, '10) and ICADL ('12, '10, '07 and '03). In computational linguistics and natural language processing, I served as area chair for information extraction in ACL '08, and area chair for summarization in '12. I have reviewed for ACL ('12, '11, '09, '05 and '03), EACL ('08), EMNLP ('11, '08, '07, '06, '05), HLT-NAACL ('09, '07 and '06), RANLP ('07 and '05), COLING ('10 and '04), INLG '04 and IJCNLP '04. I have also reviewed for information retrieval (SIGIR '09). I have also reviewed as a specialist in human-computer interaction - IUI ('07 and '06), Document Engineering (DocEng '12), multimedia - CIVR '06 and in general AI conferences (in the computational linguistics track) - IJCAI ('07 and '05), and for AAAI ('11).
I have also served as a reviewer for a number of specific workshops including ACL's R50 workshop ('12), AIRS ('10, '06 and '05), BUCC ('10 and '09), BioNLP ('10), CAW ('09), CREDISLAS ('12), ESIRMT-HyTra ('12), MMIES ('08, '07 and '06), MWE ('10, '09), RDSRP ('12 and '11), WEAS ('12) and WIDM ('05, '04 and '03),
I have also been a one-off reviewer for a few other journals, such as ACM Transactions on Information Systems (TOIS), ACM Transactions on the Web (TWEB), Information Processing and Management (IPM), Data and Knowledge Engineering (DKE), and the International Journal of Information Technology (IJIT). I have also helped with reviewing articles in JCST.
I do a small amount of consulting work for industry as well. I've acted as an external examiner for grant proposals in Malaysia and Hong Kong and thesis examiner for theses in New Zealand. I was previously a board member and auditor for the Singapore chapter of the Int'l Assoc. for Pattern Recognition (PREMIA).