I'm working at Google Research as a research scientist. I check this ubc email address once in a while, but it's easy to miss messages among many spams and other emails. My new contact is hrlee at goog led otcom. I graduated from the Database Group at the University of British Columbia with a Ph.D. degree in Computer Science in September 2010. My supervisor was Raymond Ng. I earned a Master degree in Computer Science at Seoul National University in Korea under the supervison of Hyoung-Joo Kim. I have also been working closely with Kyuseok Shim on research. I did my undergrad in Nuclear Engineering at the same school. Before grad studies, I spent several years in the industry participating in many projects in data management systems and distributed data management. The complete project list can be found here. I wish 'Stay Hungry. Stay Foolish.' for myself. Professional Servises: Co-publicity chairs for ACM SIGSPATIAL GIS 2015, 2014 and 2013, Program Committee: SIGMOD 2016, PVLDB 2015, ICDE 2015, CIKM 2013, WWW 2012, ACM SIGKDD 2012, SoloMo 2012 Research Interests I'm interested in effective and efficient handling of text in databases. With the advance of technologies, a vast amount of text data are generated by users such as blogs, comments, twits and profiles. Such data are hardly error-free with typos and different spelling conventions. They may also be collected from multiple data sources or use different spellings (e.g. Silvia and Sylvia). For these reasons, there have been growing interests in approximate or error tolerant query processing in databases. My research focuses on developing size estimation techniques for approximate text queries, which is crucial in optimizing such queries.