Combining elicited imitation and fluency features for oral proficiency measurement Deryle Lonsdale author Carl Christensen 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 lonsdale-christensen-2014-combining https://aclanthology.org/L14-1039/ 2014-05 1956 1961