Ph.D. 1996 University of Pennsylvania Computer and Information Science M.S.E. 1993 University of Pennsylvania Computer and Information Science A.B. 1987 Harvard University Computer Science (summa cum laude)
Secretary-Treasurer, SIGDAT, The ACL SIG for statistical/data-driven methods in NLP (and instiutional organizer of EMNLP) (1993-2012)
Executive Committee Member, The Association for Computational Linguistics (2000-2003)
Editorial Board Member, Computational Linguistics (1996-1999)
General Chair, Conference on Empirical Methods in Natural Language Processing (EMNLP 2013).
Program co-Chair, International Joint Conference on Natural Language Processing (IJCNLP 2011)
Local Chair, 52nd Conference of the Association for Computational Linguistics (ACL 2014).
Program co-Chair, HLT-2002, Conference on Human Language Technology
Publications Chair, ACL 2000, EMNLP 2001, ACL 2003
Program co-Chair, ACL Joint Workshop on Social Dynamics and Personal Attributes in Social Media (2014).
Program co-Chair, 3rd Workshop on Very Large Corpora (WVLC3) (1995)
ACL Fellow, Association for Computational Linguistics (2013-)