@inproceedings{gombert-bartsch-2021-tuda,
    title = "{TUDA}-{CCL} at {S}em{E}val-2021 Task 1: Using Gradient-boosted Regression Tree Ensembles Trained on a Heterogeneous Feature Set for Predicting Lexical Complexity",
    author = "Gombert, Sebastian  and
      Bartsch, Sabine",
    editor = "Palmer, Alexis  and
      Schneider, Nathan  and
      Schluter, Natalie  and
      Emerson, Guy  and
      Herbelot, Aurelie  and
      Zhu, Xiaodan",
    booktitle = "Proceedings of the 15th International Workshop on Semantic Evaluation (SemEval-2021)",
    month = aug,
    year = "2021",
    address = "Online",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2021.semeval-1.12/",
    doi = "10.18653/v1/2021.semeval-1.12",
    pages = "130--137"
}