Unsupervised Aspect-Based Multi-Document Abstractive Summarization Maximin Coavoux author Hady Elsahar author Matthias Gallé author 2019-11 text Proceedings of the 2nd Workshop on New Frontiers in Summarization Lu Wang editor Jackie Chi Kit Cheung editor Giuseppe Carenini editor Fei Liu editor Association for Computational Linguistics Hong Kong, China conference publication coavoux-etal-2019-unsupervised 10.18653/v1/D19-5405 https://aclanthology.org/D19-5405/ 2019-11 42 47