Approximation-Aware Dependency Parsing by Belief Propagation Matthew R Gormley author Mark Dredze author Jason Eisner author 2015 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal gormley-etal-2015-approximation 10.1162/tacl_a_00153 https://aclanthology.org/Q15-1035/ 2015 3 489 501