@inproceedings{mu-n-oz-s-a-nchez-etal-2026-abc, title = "{ABC} Diagnostics: A Web-Based Tool for Explainable {CEFR} Classification", author = "Mu{\~n}oz S{\'a}nchez, Ricardo and Kucher, Kostiantyn and Kayar, Filip and Volodina, Elena", 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-1.22/", pages = "295--305", ISBN = "978-9985-4-1522-1" }