Unsupervised Discovery of Discourse Relations for Eliminating Intra-sentence Polarity Ambiguities Lanjun Zhou author Binyang Li author Wei Gao author Zhongyu Wei author Kam-Fai Wong author 2011-07 text Proceedings of the 2011 Conference on Empirical Methods in Natural Language Processing Regina Barzilay editor Mark Johnson editor Association for Computational Linguistics Edinburgh, Scotland, UK. conference publication zhou-etal-2011-unsupervised https://aclanthology.org/D11-1015/ 2011-07 162 171