Corpora and Data Preparation for Information Extraction Lynn Carlson author Boyan Onyshkevych author Mary Ellen Okurowski author 1993-09 text TIPSTER TEXT PROGRAM: PHASE I: Proceedings of a Workshop held at Fredricksburg, Virginia, September 19-23, 1993 Association for Computational Linguistics Fredericksburg, Virginia, USA conference publication carlson-etal-1993-corpora-data 10.3115/1119149.1119166 https://aclanthology.org/X93-1014/ 1993-09 135 139