Natural Language Generation with Vocabulary Constraints Ben Swanson author Elif Yamangil author Eugene Charniak author 2014-06 text Proceedings of the Ninth Workshop on Innovative Use of NLP for Building Educational Applications Joel Tetreault editor Jill Burstein editor Claudia Leacock editor Association for Computational Linguistics Baltimore, Maryland conference publication swanson-etal-2014-natural 10.3115/v1/W14-1815 https://aclanthology.org/W14-1815/ 2014-06 124 133