Decision Tree Parsing using a Hidden Derivation Model F Jelinek author J Lafferty author D Magerman author R Mercer author A Ratnaparkhi author S Roukos author 1994 text Human Language Technology: Proceedings of a Workshop held at Plainsboro, New Jersey, March 8-11, 1994 conference publication jelinek-etal-1994-decision https://aclanthology.org/H94-1052/ 1994