Collecting and Evaluating Lexical Polarity with A Game With a Purpose Mathieu Lafourcade author Alain Joubert author Nathalie Le Brun author 2015-09 text Proceedings of the International Conference Recent Advances in Natural Language Processing Ruslan Mitkov editor Galia Angelova editor Kalina Bontcheva editor INCOMA Ltd. Shoumen, BULGARIA Hissar, Bulgaria conference publication lafourcade-etal-2015-collecting https://aclanthology.org/R15-1044/ 2015-09 329 337