@inproceedings{pineda-etal-2026-data,
    title = "Data Asgardians at {BEA} 2026 Shared Task 1: A Hybrid Transformer{--}Feature Ensemble for {L}1-Aware {E}nglish Vocabulary Difficulty Prediction",
    author = "Pineda, Adrian  and
      Butt, Sabur  and
      Ceballos Cancino, H{\'e}ctor",
    editor = "Kochmar, Ekaterina  and
      Alhafni, Bashar  and
      Bann{\`o}, Stefano  and
      Bexte, Marie  and
      Burstein, Jill  and
      Horbach, Andrea  and
      Laarmann-Quante, Ronja  and
      Tack, Anais  and
      Yaneva, Victoria  and
      Yuan, Zheng",
    booktitle = "Proceedings of the 21st Workshop on Innovative Use of {NLP} for Building Educational Applications ({BEA} 2026)",
    month = jul,
    year = "2026",
    address = "San Diego, California, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-acl-workshops/2026.bea-1.82/",
    pages = "1137--1145",
    ISBN = "979-8-89176-409-5"
}