Two-Step Model for Sentiment Lexicon Extraction from Twitter Streams Ilia Chetviorkin author Natalia Loukachevitch author 2014-06 text Proceedings of the 5th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis Alexandra Balahur editor Erik van der Goot editor Ralf Steinberger editor Andres Montoyo editor Association for Computational Linguistics Baltimore, Maryland conference publication chetviorkin-loukachevitch-2014-two 10.3115/v1/W14-2612 https://aclanthology.org/W14-2612/ 2014-06 67 72