Measuring the Structural Importance through Rhetorical Structure Index Narine Kokhlikyan author Alex Waibel author Yuqi Zhang author Joy Ying Zhang author 2013-06 text Proceedings of the 2013 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies Lucy Vanderwende editor Hal Daumé III editor Katrin Kirchhoff editor Association for Computational Linguistics Atlanta, Georgia conference publication kokhlikyan-etal-2013-measuring https://aclanthology.org/N13-1096/ 2013-06 783 788