Why Words Alone Are Not Enough: Error Analysis of Lexicon-based Polarity Classifier for Czech Kateřina Veselovská author Jan Hajič jr. author 2013-10 text Proceedings of the 3rd Workshop on Sentiment Analysis where AI meets Psychology Sivaji Bandyopadhyay editor Manabu Okumura editor Asian Federation of Natural Language Processing Nagoya, Japan conference publication veselovska-hajic-jr-2013-words https://aclanthology.org/W13-4101/ 2013-10 1 5