Grammatical structures for word-level sentiment detection Asad Sayeed author Jordan Boyd-Graber author Bryan Rusk author Amy Weinberg author 2012-06 text Proceedings of the 2012 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies Eric Fosler-Lussier editor Ellen Riloff editor Srinivas Bangalore editor Association for Computational Linguistics Montréal, Canada conference publication sayeed-etal-2012-grammatical https://aclanthology.org/N12-1085/ 2012-06 667 676