Sentiment classification on customer feedback data: noisy data, large feature vectors, and the role of linguistic analysis Michael Gamon author 2004-aug 23–aug 27 text COLING 2004: Proceedings of the 20th International Conference on Computational Linguistics COLING Geneva, Switzerland conference publication gamon-2004-sentiment https://aclanthology.org/C04-1121/ 2004-aug 23–aug 27 841 847