Modeling Language Proficiency Using Implicit Feedback Chris Hokamp author Rada Mihalcea author Peter Schuelke 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 hokamp-etal-2014-modeling https://aclanthology.org/L14-1090/ 2014-05 3983 3986