%0 Conference Proceedings %T Single-Document Summarization as a Tree Knapsack Problem %A Hirao, Tsutomu %A Yoshida, Yasuhisa %A Nishino, Masaaki %A Yasuda, Norihito %A Nagata, Masaaki %Y Yarowsky, David %Y Baldwin, Timothy %Y Korhonen, Anna %Y Livescu, Karen %Y Bethard, Steven %S Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing %D 2013 %8 October %I Association for Computational Linguistics %C Seattle, Washington, USA %F hirao-etal-2013-single %U https://aclanthology.org/D13-1158/ %P 1515-1520