He received his Ph.D. from the Department of Computer and Information Sciences at the University of Pennsylvania under Prof. Aravind Joshi. His research areas are statistical parsing and machine translation (exploiting syntax or morphology, or both). His interests also include formal language theory and stochastic grammars, in particular tree automata and tree-adjoining grammars. He would like to decipher the Voynich manuscript before Kevin Knight does. For his service to NAACL and to other ACL conferences please see his home page.