Modeling Missing Data in Distant Supervision for Information Extraction Alan Ritter author Luke Zettlemoyer author Mausam author Oren Etzioni author 2013 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal ritter-etal-2013-modeling 10.1162/tacl_a_00234 https://aclanthology.org/Q13-1030/ 2013 1 367 378