@inproceedings{g-u-c-c-er-etal-2026-poor, title = "Poor Generalisation of Proficiency Classifiers Trained on Linguistic Complexity Features to New Writing Tasks", author = {G{\"u}{\c{c}}er, Emre and Akef, Soroosh and Meurers, Detmar}, editor = "Masciolini, Arianna and Alfter, David and Lange, Herbert and Mu{\~n}oz S{\'a}nchez, Ricardo and Pil{\'a}n, Ildik{\'o} and Volodina, Elena", booktitle = "Proceedings of the 15th Workshop on Natural Language Processing for Computer Assisted Language Learning", month = nov, year = "2026", address = "Gothenburg, Sweden", publisher = "University of Tartu Library", url = "https://aclanthology.org/2026.nlp4call-1.24/", pages = "314--333", ISBN = "978-9985-4-1522-1" }