Reducing Sparsity Improves the Recognition of Implicit Discourse Relations Junyi Jessy Li author Ani Nenkova author 2014-06 text Proceedings of the 15th Annual Meeting of the Special Interest Group on Discourse and Dialogue (SIGDIAL) Kallirroi Georgila editor Matthew Stone editor Helen Hastie editor Ani Nenkova editor Association for Computational Linguistics Philadelphia, PA, U.S.A. conference publication li-nenkova-2014-reducing 10.3115/v1/W14-4327 https://aclanthology.org/W14-4327/ 2014-06 199 207