I am a research staff member in the Information Security Group at the IBM T. J. Watson Research Center in NY. My primary research areas are natural language processing (NLP), data mining, machine learning and information security. I am particularly interested in applying NLP and machine learning technologies to real world applications including cybersecurity, healthcare and business intelligence. I have published over 40 peer-reviewed papers and 30 issued and pending patents in these areas. I received a Ph.D. in Computer Science from Yonsei University in Seoul, Korea.