Squibs: Nouveau-ROUGE: A Novelty Metric for Update Summarization John M Conroy author Judith D Schlesinger author Dianne P O’Leary author 2011-03 text journal article Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal conroy-etal-2011-squibs 10.1162/coli_a_00033 https://aclanthology.org/J11-1001/ 2011-03 37 1 1 8