Principal Investigator of the Intelligent Technologies for Teaching and Learning group (http://ai.isi.edu/pedtek/pedtek.html). The covered projects are supported by several NSF programs. Research Assistant Professor in the Department of Computer Science at USC. EDUCATION Ph.D. Computer Science, University of Southern California, CA. Thesis: Bounding the Cost of Learned Rules: A Transformational Approach Advisor : Paul S. Rosenbloom (USC/ISI) M.S. Computer Science and Statistics, Seoul National University, Seoul, Korea. Thesis : Building Interface for Accessing Database Management System or Expert System Shell B.S. Computer Science and Statistics, Seoul National University, Seoul, Korea. (Cum Laude) RESEARCH INTERESTS Intelligent interfaces for knowledge acquisition: applying human-computer interaction methodologies for managing knowledge acquisition dialogue, developing intelligent interfaces for knowledge acquisition. Online discourse analysis: user modeling based on information seeking and information providing roles within online discussion boards and wikis, intelligent guidance for promoting collaborative problem solving. Educational data mining: intelligent instructor aid for student online learning assessment, workflow environment that supports efficient and robust assessment of student learning. Semantic approaches to workflow systems: knowledge-based techniques to support reasoning on large computational experiments, approach to explore the space of possible experiments with varying degrees of detail and varying amounts of constraints. AWARDS Meritorious Service Award, University of Southern California/ Information Sciences Institute, 2005. Best Paper Award, with Jim Blythe, Surya Ramachandran, and Yolanda Gil. "An integrated environment for knowledge acquisition", Intelligent User Interface Conference (IUI-2001). Meritorious Service Award, University of Southern California/ Information Sciences Institute, 1997. Second place in the 5th Annual AAAI Mobile Robot Competition and Exhibition, 1996. Academic Achievement Award, Office for International Students and Scholars, University of Southern California, 4/1996. Cum Laude, Seoul National University, Korea, 1988. University Scholarship, Seoul National University, Korea, 1984-1988.