SW4ALL: a CEFR Classified and Aligned Corpus for Language Learning Rodrigo Wilkens author Leonardo Zilio author Cédrick Fairon author 2018-05 text Proceedings of the Eleventh International Conference on Language Resources and Evaluation (LREC 2018) Nicoletta Calzolari editor Khalid Choukri editor Christopher Cieri editor Thierry Declerck editor Sara Goggi editor Koiti Hasida editor Hitoshi Isahara editor Bente Maegaard editor Joseph Mariani editor Hélène Mazo editor Asuncion Moreno editor Jan Odijk editor Stelios Piperidis editor Takenobu Tokunaga editor European Language Resources Association (ELRA) Miyazaki, Japan conference publication wilkens-etal-2018-sw4all https://aclanthology.org/L18-1055/ 2018-05