Shift-Reduce Constituent Parsing with Neural Lookahead Features Jiangming Liu author Yue Zhang author 2017 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal liu-zhang-2017-shift 10.1162/tacl_a_00045 https://aclanthology.org/Q17-1004/ 2017 5 45 58