System Demonstration Content Planning as the Basis for an Intelligent Tutoring System Reva Freedman author Stefan Brandle author Michael Glass author Jung Hee Kim author Yujian Zhou author Martha W Evens author 1998-08 text Natural Language Generation Eduard Hovy editor Association for Computational Linguistics Niagara-on-the-Lake, Ontario, Canada conference publication freedman-etal-1998-system https://aclanthology.org/W98-1430/ 1998-08