Meta-Classifiers Easily Improve Commercial Sentiment Detection Tools Mark Cieliebak author Oliver Dürr author Fatih Uzdilli author 2014-05 text Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC’14) Nicoletta Calzolari editor Khalid Choukri editor Thierry Declerck editor Hrafn Loftsson editor Bente Maegaard editor Joseph Mariani editor Asuncion Moreno editor Jan Odijk editor Stelios Piperidis editor European Language Resources Association (ELRA) Reykjavik, Iceland conference publication cieliebak-etal-2014-meta https://aclanthology.org/L14-1634/ 2014-05 3100 3104