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Massachusetts Institute of Technology, Ph.D., 1981, advised by Jerry Fodor
University of Arizona, B.A., 1976
2015-present: Professor Emeritus, UCLA
2020-2022: Principal Scientist, PARC
2019-2020: Senior Director, AI Research Scientist, Samsung Research America
2015-2018 Principal Research Scientist, Nuance Communications
1989-2015: Professor of Linguistics, UCLA
2012,2008,2004,2003: Lecturer, École d’Automne de Linguistique, École normale supérieure, Paris
2009,2002,1997,1995: Lecturer, European Summer School in Logic Language and Information, (Bordeaux, Trento, Aix-en-Provence, Barcelona)
2005,1993: Lecturer, LSA Institute (MIT/Harvard,Ohio State)
2003,2002: Lecturer, North American Summer School in Logic Language and Information, (Indiana,Stanford)
1990-2001: Consultant, Intelligent Text Processing, Santa Monica, California
1999: Lecturer, Fall school in Syntax and Semantics, NTNU, Trondheim
1998,1996: Lecturer, Netherlands graduate school of Linguistics (LOT), Utrecht
1996: Guest Professor, Institut für Linguistik, Universität Potsdam
1986-1990: Consultant, IBM Los Angeles Scientific Center
1984-1989: Asst. Professor of Computer Science, University of Western Ontario
1986-1987: Software Engineer, Quintus Computer Systems
1985: Information Processing Services, IBM
1984: Visiting Research Scientist, Educational Testing Service
1984: Visiting Assistant Professor of Philosophy, UCLA
1981-1983: Postdoctoral Fellow in Cognitive Science, University of Western Ontario