· Senior Research Scientist, Flatiron Institute2020–
· Research Scientist, Columbia University2002–2011
· Software Developer, Research Scientist, Alias-i (LingPipe)2000–2002
· Research Scientist, Bell Labs
· Professor of Computational Linguistics, Carnegie Mellon University
· B.S. in Mathematics, Michigan State University
· Ph.D. in Cognitive Science and Computer Science, University of Edinburgh