Experiments with Tree-Structured MMI Encoders on the RM Task Mark T Anikst author William S Meisel author Matthew C Soares author Kai-Fu Lee author 1990 text Speech and Natural Language: Proceedings of a Workshop Held at Hidden Valley, Pennsylvania, June 24-27,1990 conference publication anikst-etal-1990-experiments https://aclanthology.org/H90-1067/ 1990