C-Test Collector: A Proficiency Testing Application to Collect Training Data for C-Tests Christian Haring author Rene Lehmann author Andrea Horbach author Torsten Zesch author 2021-04 text Proceedings of the 16th Workshop on Innovative Use of NLP for Building Educational Applications Jill Burstein editor Andrea Horbach editor Ekaterina Kochmar editor Ronja Laarmann-Quante editor Claudia Leacock editor Nitin Madnani editor Ildikó Pilán editor Helen Yannakoudakis editor Torsten Zesch editor Association for Computational Linguistics Online conference publication haring-etal-2021-c https://aclanthology.org/2021.bea-1.19/ 2021-04 180 184