Sensitivity as a Complexity Measure for Sequence Classification Tasks Michael Hahn author Dan Jurafsky author Richard Futrell author 2021 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal hahn-etal-2021-sensitivity 10.1162/tacl_a_00403 https://aclanthology.org/2021.tacl-1.53/ 2021 9 891 908