He teaches courses in knowledge organization, information behavior and data mining. He obtained his PhD at Syracuse University and his MSc in Library & Information Science at the University of Illinois, Urbana-Champaign. He has also worked for several years as a science reference librarian, cataloger and online information searcher at the National University of Singapore Libraries. His main research interests are in text mining (information extraction, text summarization and sentiment analysis), academic writing & thinking, knowledge organization, health informatics, and information behavior on social media. He is developing a research cluster on Multidisciplinary research on academic reading, thinking & writing.