Semi-supervised latent variable models for sentence-level sentiment analysis Oscar Täckström author Ryan McDonald author 2011-06 text Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies Dekang Lin editor Yuji Matsumoto editor Rada Mihalcea editor Association for Computational Linguistics Portland, Oregon, USA conference publication tackstrom-mcdonald-2011-semi https://aclanthology.org/P11-2100/ 2011-06 569 574