Towards Robust Abstractive Multi-Document Summarization: A Caseframe Analysis of Centrality and Domain Jackie Chi Kit Cheung author Gerald Penn author 2013-08 text Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Hinrich Schuetze editor Pascale Fung editor Massimo Poesio editor Association for Computational Linguistics Sofia, Bulgaria conference publication cheung-penn-2013-towards https://aclanthology.org/P13-1121/ 2013-08 1233 1242