@inproceedings{jin-schuler-2020-importance,
    title = "The Importance of Category Labels in Grammar Induction with Child-directed Utterances",
    author = "Jin, Lifeng  and
      Schuler, William",
    editor = "Bouma, Gosse  and
      Matsumoto, Yuji  and
      Oepen, Stephan  and
      Sagae, Kenji  and
      Seddah, Djam{\'e}  and
      Sun, Weiwei  and
      S{\o}gaard, Anders  and
      Tsarfaty, Reut  and
      Zeman, Dan",
    booktitle = "Proceedings of the 16th International Conference on Parsing Technologies and the IWPT 2020 Shared Task on Parsing into Enhanced Universal Dependencies",
    month = jul,
    year = "2020",
    address = "Online",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/2020.iwpt-1.15/",
    doi = "10.18653/v1/2020.iwpt-1.15",
    pages = "145--150",
    abstract = "Recent progress in grammar induction has shown that grammar induction is possible without explicit assumptions of language specific knowledge. However, evaluation of induced grammars usually has ignored phrasal labels, an essential part of a grammar. Experiments in this work using a labeled evaluation metric, RH, show that linguistically motivated predictions about grammar sparsity and use of categories can only be revealed through labeled evaluation. Furthermore, depth-bounding as an implementation of human memory constraints in grammar inducers is still effective with labeled evaluation on multilingual transcribed child-directed utterances."
}