@article{hao-etal-2022-formal, title = "Formal Language Recognition by Hard Attention Transformers: Perspectives from Circuit Complexity", author = "Hao, Yiding and Angluin, Dana and Frank, Robert", editor = "Roark, Brian and Nenkova, Ani", journal = "Transactions of the Association for Computational Linguistics", volume = "10", year = "2022", address = "Cambridge, MA", publisher = "MIT Press", url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/2022.tacl-1.46/", doi = "10.1162/tacl_a_00490", pages = "800--810" }