Single Document Summarization based on Nested Tree Structure Yuta Kikuchi author Tsutomu Hirao author Hiroya Takamura author Manabu Okumura author Masaaki Nagata author 2014-06 text Proceedings of the 52nd Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers) Kristina Toutanova editor Hua Wu editor Association for Computational Linguistics Baltimore, Maryland conference publication kikuchi-etal-2014-single 10.3115/v1/P14-2052 https://aclanthology.org/P14-2052/ 2014-06 315 320