Extracting Opinion Expressions and Their Polarities – Exploration of Pipelines and Joint Models Richard Johansson author Alessandro Moschitti 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 johansson-moschitti-2011-extracting https://aclanthology.org/P11-2018/ 2011-06 101 106