Extraction of Russian Sentiment Lexicon for Product Meta-Domain Ilia Chetviorkin author Natalia Loukachevitch author 2012-12 text Proceedings of COLING 2012 Martin Kay editor Christian Boitet editor The COLING 2012 Organizing Committee Mumbai, India conference publication chetviorkin-loukachevitch-2012-extraction https://aclanthology.org/C12-1037/ 2012-12 593 610