Opinion Graphs for Polarity and Discourse Classification Swapna Somasundaran author Galileo Namata author Lise Getoor author Janyce Wiebe author 2009-08 text Proceedings of the 2009 Workshop on Graph-based Methods for Natural Language Processing (TextGraphs-4) Monojit Choudhury editor Samer Hassan editor Animesh Mukherjee editor Smaranda Muresan editor Association for Computational Linguistics Suntec, Singapore conference publication somasundaran-etal-2009-opinion https://aclanthology.org/W09-3210/ 2009-08 66 74