The DIAG experiments: Natural Language Generation for Intelligent Tutoring Systems Barbara Di Eugenio author Michael Glass author Michael Trolio author 2002-07 text Proceedings of the International Natural Language Generation Conference Kathleen McKeown editor Association for Computational Linguistics Harriman, New York, USA conference publication di-eugenio-etal-2002-diag https://aclanthology.org/W02-2116/ 2002-07 120 127