Guillermo Gallego，Chair of the Industrial Engineering and Operations Research(IEOR) Department Columbia University； Education Ph.D. Cornell University, Ithaca, NY. January 1988. Operations Research and Industrial Engineering. Minors: Economics and Statistics. Advisor: R. Roundy M.S. Cornell University, Ithaca, NY. January 1987. Operations Research and Industrial Engineering. B.A. University of California, San Diego, CA. January 1980. Mathematics, with honors. Minors: Economics and Psychology Professional Experience 2012–present Liu Family Professor. Dept. of Ind. Eng. & Oper. Res. 2002–2008 Department Chairman Ind. Eng. & Oper. Res. 2000-present Professor. Dept. of Ind. Eng. & Oper. Res. Columbia University 1999–2003 Visiting Scientist. IBM Watson Research Center, NY. 1999–2001 Co-director, MS in Financial Engineering program. 1996–1997 Visiting Associate Professor. Graduate School of Business. Stanford University 1995–2000 Tenured Associate Professor, Dept. of Ind. Eng. & Oper. Res. Columbia University 1994–1995 Associate Professor. Dept. of Ind. Eng. & Oper. Res. Columbia University 1988– 1993 Assistant Professor. Dept. of Ind. Eng. & Oper. Res. Columbia University