Extractive vs. NLG-based Abstractive Summarization of Evaluative Text: The Effect of Corpus Controversiality Giuseppe Carenini author Jackie C K Cheung author 2008-06 text Proceedings of the Fifth International Natural Language Generation Conference Michael White editor Crystal Nakatsu editor David McDonald editor Association for Computational Linguistics Salt Fork, Ohio, USA conference publication carenini-cheung-2008-extractive https://aclanthology.org/W08-1106/ 2008-06 33 41