Best-First Beam Search Clara Meister author Tim Vieira author Ryan Cotterell author 2020 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal meister-etal-2020-best 10.1162/tacl_a_00346 https://aclanthology.org/2020.tacl-1.51/ 2020 8 795 809