Evaluating the Robustness of EmotiBlog for Sentiment Analysis and Opinion Mining Ester Boldrini author Javi Fernández author José Manuel Gómez author Patricio Martínez-Barco author 2011-09 text Proceedings of the International Conference Recent Advances in Natural Language Processing 2011 Ruslan Mitkov editor Galia Angelova editor Association for Computational Linguistics Hissar, Bulgaria conference publication boldrini-etal-2011-evaluating https://aclanthology.org/R11-1072/ 2011-09 521 526