“Haters gonna hate”: challenges for sentiment analysis of Facebook comments in Brazilian Portuguese Juliano D Antonio author Ana Carolina L Santin author 2017-09 text Proceedings of the 6th Workshop on Recent Advances in RST and Related Formalisms M Taboada editor I da Cunha editor E G Maziero editor P Cardoso editor J D Antonio editor M Iruskieta editor Association for Computational Linguistics Santiago de Compostela, Spain conference publication 978-1-945626-78-4 antonio-santin-2017-haters 10.18653/v1/W17-3609 https://aclanthology.org/W17-3609/ 2017-09 64 72