Aggregation Improves Learning: Experiments in Natural Language Generation for Intelligent Tutoring Systems Barbara Di Eugenio author Davide Fossati author Dan Yu author Susan Haller author Michael Glass author 2005-06 text Proceedings of the 43rd Annual Meeting of the Association for Computational Linguistics (ACL’05) Kevin Knight editor Hwee Tou Ng editor Kemal Oflazer editor Association for Computational Linguistics Ann Arbor, Michigan conference publication di-eugenio-etal-2005-aggregation 10.3115/1219840.1219847 https://aclanthology.org/P05-1007/ 2005-06 50 57